VM ZINC : standing seam - Quinn Roofingquinnroofing.ie/downloads/standing_seam.pdf · Umicore Marketing Services U.K. Four Rivers House, Fentiman Walk Hertford, Herts, SG14 1DB VM

Umicore Marketing Services U.K. Four Rivers House,

Fentiman Walk Hertford, Herts, SG14 1DB

VM ZINC®: standing seamGuidelines for specification and installation

Junglim Architecture - QUARTZ-ZINC®

Roofing and cladding system in VM ZINC®

Roofs from a 3° pitch and facades

Freedom with shape and appearance

A choice of “ventilated” or “warm” roofing systems

This document applies exclusively to the specification and installation of the designated products

or systems on building sites in United Kingdom and the Republic of Ireland.

A Umicore brand

2

Standing Seam - ContentsVM ZINC natural and recyclableSurface appearancesWhat is standing seam?Types and areas of applications

Standing seam roofing, warm roof on mineral wool or PIRFixing clipsExamples of details: junction gutter, box gutter, verges, ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

Standing seam roofing, warm roof on composite panelsFixing clipsExamples of details: junction gutter, box gutter, verges, ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

Standing seam roofing, warm roof on cellular glassFixing clipsExamples of details: junction gutter, box gutter, verges, ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

Standing seam roofing, ventilated roof on incompatible supportFixing clipsExamples of details: junction gutter, box gutter, verges, ventilated ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

Standing seam roofing, ventilated roof on roof boardingFixing clipsExamples of details: junction gutter, box gutter, verges, ventilated ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

Standing seam roofing, example very low pitchStanding seam roofing, specific applications

Standing seam facade, ventilated cladding, horizontal panels installed on boardingStanding seam facade, ventilated cladding, vertical panels installed on boarding

Standing seam - System installationExpansion of VM ZINC® - layoutMeasuring for and ordering profiled panels - maximum length of panelsTransportation, storage, installing and working VM ZINC®

Preparation and fixing of the top of the panels3 stage installation of the panels1. Laying the panel on the structure2. Installation of clips3. Preparation of the panels for crimpingCrimping

Standing seam facade - Installation of the system

Removing the protective film and moving around on the VM ZINC®

Appendix 1 - Junctions at the foot of the pitchAppendix 2 - Verge flashingAppendix 3 and 4 - Flashings and forbidden contactsAppendix 5 - Ventilation of VM ZINC® roofing and claddingAppendix 6 - Compatibility of VM ZINC® with wood, wood derivates, glues and mastics

3 .............................4 .............................5 ..............................6 and 7 ..................

8 .............................10 ...........................11 to 17 .................

18 ...........................20 ...........................21 to 27 .................

28 ...........................30 ...........................31 to 37 .................

38 ...........................40 ...........................41 to 47 .................

48 ...........................50 ...........................51 to 57 .................

58 ...........................59 ...........................

60 to 62 .................63 to 65 .................

66 ...........................67 ...........................68 ...........................69 ...........................

69 ...........................70 ...........................71 ...........................72 to 73 .................

74 ...........................

75 ...........................

76 ...........................77 ...........................78 ...........................79 ...........................80 to 81 .................

3

VM ZINC®

• is the brand name of rolled zinc products, transformed, produced

and sold by Umicore.

• conforms to the EN 988.

• is a 99.995% electrolytic zinc, to which very small quantities of

copper and titanium are added.

Physical properties of VM ZINC®

Density: 7.18+ 0.02 g/cm3.

Linear expansion: 0.022 mm per m and per °C in the direction of

rolling.

VM ZINC® - natural and recyclable

Recyclable

Zinc is 100% recyclable. More than 90% of the zinc used in the building industry is recycled.

Less energy is required to produce it than the other principal metals. The energy balance is even

more favourable in recycled zinc. This excellent result clearly proves the contribution of VM ZINC®

to sustainable developement.

150

100

50

0ZINC COPPER ALUMINIUM

200

250

MJ/kg

18

43

203(3)

105(3)

12(2)

50(1)

From ore to metal From recycled material to metal

4

Natural VM ZINC®

has a shiny metallic appearance when

new and develops a patina naturally

over time.

Thus it gradually takes on a uniform matt

grey appearance.

QUARTZ-ZINC®

offers an appearance and texture close

to the patina developed by natural

VM ZINC®.

The grey tones of QUARTZ-ZINC® and

its structural flexibility bring out the

character of a building from the outset.

Appreciated for refurbishment, its

natural-looking colour blends well with

existing construction materials.

The coating and pigments

do not in any way alter the

environmental properties of

pre-weathered VM ZINC®.

Moreover, the coating does not

contain chromate development.

Bilacquered VM ZINC®

6 colours are available: stone

white, sky blue, copper green,

autumn brown, slate grey and

Macao brown. For non standard

colours, please contact us.

VM ZINC®

surface appearances

VM ZINC®: a wide variety of surface appearances

ANTHRA-ZINC® QUARTZ-ZINC®PIGMENTO® green PIGMENTO® red PIGMENTO® blue

ANTHRA-ZINC®

Its name reflects the charcoal colour,

offering many combination possibilities.

ANTHRA-ZINC® is covered on both sides

with a surface treatment with anti-

corrosion agents.

ANTHRA-ZINC® lends itself to highly

structured architecture.

PIGMENTO®

The PIGMENTO® range is based on QUARTZ-

ZINC® to which mineral pigments are

added. 3 colours are available: PIGMENTO®

blue, red and green. This coloured finish

preserves the naturally grained texture of

pre-weathered zinc.

5

The low height of the seams (25 mm

standard) and the 600 mm spacing

between joints give the roof a light,

harmonious appearance.

Moreover, any non-standard width

between 60 and 600 mm can be

produced.

Standing seam roofs or cladding should

only be installed by properly trained and

equipped professionals.

Thus the fixing clips for panels

and flashings never penetrate

the material and therefore do

not damage the appearance or

waterproofing.

The standing seam system, which

developed from roll cap:

• is a roof and facade covering system

• can be installed from a 3° pitch.

• can be laid in lengths upto 13 m

without the need for expansion steps.

• can be used for ventilated or warm

roofing.

• adapts to the simplest or the most

complex roof shapes.

• can be used to cover soffits (box

gutter overhangs, etc).

Generally speaking, the profiled

panels are held in place at the top

of the pitch by fixed clips and on the

sides by sliding clips distributed along

the length of the panel. These clips,

which are fixed to the structure, are

crimped inside the joints.

VM ZINC “PLUS®“ is exactly the same

pure high quality material as standard

VM ZINC®. It, has a 60 micron thick

organic coating to its underside

VM ZINC “PLUS®“ is the future of

Zinc in Architecture. This allows it to

be installed over non ventilated &

potentially non compatible substrates.

Introduction What is standing seam?

> Arch. G. Wastiau- QUARTZ-ZINC® & bilacquered VM ZINC®

What is VM ZINC® PLUS?

Umicore organises practical training courses on

the installation of VM ZINC® standing seam:

• Reserved for roofing professionals.

• Organised in a covered, specially equipped training centre.

: www.vmzinc.co.uk

: www.vmzinc.ie

( 01992 822288.

6

Standing SeamTypes of application

Ventilated roof on roof boarding: VM ZINC® roof with ventilated underside. This ventilation

consists of an air space where the C02 in the air allows

the VM ZINC® to develop a natural patina on the underside.

This ventilated air space, with openings at the bottom and

top of the roof is absolutely necessary to guarantee the

durability of VM ZINC® (cf appendix 5 page 79).

Ventilated roof on incompatible support: In this application the underside of the metal is

unventilated and therefore the use of VM ZINC® PLUS

with an already protected underside is obligatory.

• Easy installation

• Can be used to cover complex shapes

• Classes of internal humidity load: 1 to 4

• Very competitive price

• Classes of internal humidity load:

1 to 4

VM ZINC® PLUS on composite panels



1 to 4

VM ZINC® PLUS on mineral wool or PIR



1 to 4

VM ZINC® PLUS on cellular glass

• Non - penetrating fastening


1 to 5

Warm roof: VM ZINC® roofing is fixed directly on the insulating material.

The underside of the metal is unventilated and therefore the use of VM ZINC® PLUS with an already protected

underside is obligatory.

7

Standing SeamAreas of application

> Nb1: Further details: please consult BS 5250:2002 & EN 13788:2001.

> Nb2: Please consult our technical department.

Type of

standing seam roof

Page

ApplicationClasses of Internal

Humidity Load (Nb1)Pitch

Shape

Roof FacadeLow

1Moderate2 - 3 - 4

High5

Straight Curved Complex

Warm roof on cellular glass

8 P - P P P from 3° to 45° P P Nb2

Warm roof on composite panels

18 P - P P - from 3° to 60° P - -Warm roof on mineral wool

or PIR28 P - P P - from 3° to 60° P P Nb2

Ventilated roof on roof boarding

38 P P P P -from 3° to

vertical P P PVentilated roof on

incompatible support

48 P P P P -from 3° to

vertical P P P

What is VM ZINC® PLUS?

VM ZINC® PLUS is VM ZINC® coated on the underside with a protective layer (Umicore patent).

1. Surface appearances available: Natural VM ZINC® PLUS, QUARTZ-ZINC® PLUS and ANTHRA-ZINC® PLUS.

2. Used for « warm » applications or on incompatible structure.

3. No need to ventilate the underside of VM ZINC® PLUS.

Standing Seam - RoofingWarm roof on mineral wool or PIR

8

Composition of roof

Interior finish

Support structure (e.g. steel deck)

Vapour control layer

Insulation

Breather membrane

VM ZINC® PLUS standing seam

1

1

2

3

4

5

6

2

3

4

5

6

9

Characteristics of this technique

With this warm roof system VM ZINC®

PLUS standing seam can be installed on

mineral wool or PIR insulation without

ventilating the underside of the VM ZINC®

PLUS.

Penetrating fixing elements can be used

with the help of plates, joists or special

fixing clips supplied by Umicore.

Structure

A choice of:

• Steel deck

• Timber deck.

This structure is successively covered by:

• A vapour control layer with a high

water vapour resistance installed with

cold or hot glued joints.

• Insulation: either mineral wool or

some types of PIR. all insulation

materials have to resist a compression

strenght of minimum 50kPa

(0.5kg/cm2), at a maximum 10%

deformation.

Area of application

• Roofs with a pitch from 3° to 60°.


1 to 4.

VM ZINC®, the choices

Only “PLUS” type VM ZINC® with a

specially protected underside:

• Natural VM ZINC® PLUS, QUARTZ-ZINC®

PLUS or ANTHRA-ZINC®PLUS.

• 0.7 mm thick.

The insulation material has to comply

with national regulation (i.e. fire

resistance).

• Between the VM ZINC® PLUS and the

insulation, a breather membrane is

fixed with an overlap of ± 150 mm.

N.B. The information relating to the

installation of insulation and membranes

is simply an indication.

The choice and installation of these

products will be according to the

recommendations of the insulation and

membrane manufacturers.

Arch. L3M - QUARTZ-ZINC® PLUS>

Installation of this system see pages 66 to 79

Specifications:

: See www.vmzinc.co.uk

: See www.vmzinc.ie

205709000 3 fixed clip Stainless steel 100

4 spacer

Information on the spacers (for fixed clips):

In order to avoid crushing the insulation, a

spacer with the same height as the insulation is

placed between the breather membrane and the

structure. The fixing screw goes into the hole in

this spacer.

Fixing clips to be used

Fixing the clips

Only with screws of a diameter, length

and type appropriate to the structure.


10

code fig. description material qty/box

220002860 1 sliding clip stainless steel 250

220002861 2 distribution plate stainless steel 250

1

2

3

4

pitch min. 1°

pitch min. 1°

11

The solutions presented here are simply examples and are not the only ones possible.

Our technical assistance department is available to study other solutions with you.

Examples of details

Gutter

1. standing seam in VM ZINC® PLUS

2. continuous eaves apron strip in

VM ZINC® PLUS

3. folded strip in VM ZINC® PLUS, th = 0.7 mm,

continuous

4. sheet clip in VM ZINC® PLUS, th = 0.7 mm,

w = 80 mm, 2 per m

5. loadbearing structure

6. continuous sheet strip in VM ZINC® PLUS,

th = 0.7 mm

7. flashing in VM ZINC® PLUS

8. PLULINE® gutter bracket

9. PLULINE® gutter

10. rafter, 5 mm thinner than the insulation

11. breather membrane

12. vapour control layer

13. insulation mineral wool or PIR

L = Flashing length - see page 76

Box gutter (gutter outside the wall)


2. continuous strip in VM ZINC®, th = 0.8 mm


w = 80 mm, 2 per m

4. continuous double welt strip in

VM ZINC® PLUS, continuously soldered

5. bracket in VM ZINC®, th = 1 mm,

w = 250 mm, 2 per m


7. roof boarding

8. box gutter in VM ZINC®

9. ventilated space

10. packers fixed to gutter fall

11. fascia with welted panels in VM ZINC®,

dimensions maximum for each panels:

400 x 2000 mm




15. continuous welt piece in VM ZINC®

16. mesh (2 mm maximum weave)

- In some cases it is recommended to provide

snow guards.

- When rendering a wall it is recommended

to protect the VM ZINC®.


-When rendering a wall it is

recommended to protect the VM ZINC®.

- In some cases it is recommended to

provide snow guards.

Variation

Variation

slope min. 3°

pitch min. 1°

pitch min. 1°


12

Wall abutment head


2. head saddle piece in VM ZINC®




6. roof boarding


w = 80 mm, 2 per m

8. continuous capping piece in VM ZINC® PLUS

9. wall

10. mastic sealant, compatible with VM ZINC®

11. fixing wedge

Box gutter (gutter inside or on the wall)



VM ZINC® PLUS


w = 80 mm, 2 per m

4. folded clip in VM ZINC® PLUS, th = 0.7 mm,

continuous


th = 0.7 mm


7. roof boarding

8. box gutter in VM ZINC® PLUS

9. bracket in VM ZINC® PLUS, th = 0.7 mm,

continuous





snow guards.

- When rendering a wall it is recommended to

protect the VM ZINC®.


For curved roof The mimimum pitch at the ridge must be at least 3° over first metre

with flat folded clip

with rolled bead

13

Roof abutment



w = 80 mm, 2 per m

3. VM ZINC® PLUS stepped flashings chased into

the wall





8. fixing wedge

Ridge


2. saddle piece in VM ZINC®

3. ridge piece in VM ZINC® PLUS, th = 0.7 mm


w = 80 mm, 2 per m

5. rafter




For curved roof The minimum pitch at the ridge must be at least 3° over the first metre.

pitch min.


14

Valley detail (to be used for roofpitches in excess of 14°)



w = 80 mm, 2 per m

3. continuous double welt strip in VM ZINC®,

continuously soldered

4. water flow controler*




8. valley gutter in VM ZINC® PLUS

9. screw, 20 mm longer than the thickness of

the isulation4* In some conditions a water

flow controler can be necessary.

Verge



3. sliding clip VM ZINC® in stainless steel,

(manually adapted/tranformed)

4. fascia in VM ZINC® PLUS

5. continuous edge flashing in VM ZINC® PLUS

6. wall



In some cases it is recommended to provide

snow guards.

R = overlap - see page 76

15

Box valley gutter



VM ZINC® PLUS


w = 80 mm, 2 per m


continuous

5. overflow


7. heating cables (if required)






Hip



3. hip piece in VM ZINC® PLUS, th = 0.7 mm


w = 80 mm, 2 per m

5. rafter




- In some cases it is recommended to provide snow guards.

section AA

section DD

section CC

saddle piece

continuous welting strip

skylight

standing seam in VM ZINC® PLUS

section BB

independent flashing


16

Junctions skylight (min. pitch 14°)




4. skylight flashing

5. roof boarding



w = 80 mm, 2 per m



9. flashing in VM ZINC ® PLUS to witch the

standing seam is fixed

10. water deflector piece, pitch min. 0.5°


12. screw, 20 mm longer than the thickness of

the insulation

13. fold 20 mm

Overview To allow for the expansion of the VM ZINC®, we cover the chassis of the skylight with an independent flashing.The above standing seam sheets are welted to this flashing. This flashing is laterally locked in the standing seam.

Mansard



VM ZINC® PLUS


w = 80 mm, 2 per m


contiunuous

5. insulation in mineral wool or PIR

6. rafter , 5 mm thinner than the insulation



For a mansard pitch stronger than 60°,

it’s IMPORTANT to contact the technical service

of VM ZINC®.


In some cases it is recommended

to provide snow guards.


section AA

section CC

section BB


laid seam, soldered continuously

skylight

saddle piece

17

Junction with chimney in stainless steel (between two seams)



3. tube in VM ZINC®

4. twinwall chimney in stainless steel with

insulation

5. flashing piece in stainless steel


7. flashing collar in VM ZINC® (dot soldering)

8. insulation in mineral wool or PIR


Junctions skylight (pitch above 3°)





5. roof boarding



w = 80 mm, 2 per m



9. standing seam fold, fixed and soldered


11. water deflector piece, min. pitch 0.5°

12. fold 20 mm

Penetrations must not interupt more than three seams. At this level, expansion of the VM ZINC® must be, towards the ridge not the eaves, = no fixed clip at the ridge.

Overview

*: Fire space in accordance with the building regulations

E: make allowances for the expansion & contraction of the VM ZINC® (depending of the temperature when applied)

Note: the top of the chimney must be high enough

to prevent deposit falling onto the roof. We recommend the use of an uncovered finishing cone for fuel oil heating chimneys.

Standing Seam - RoofingWarm roof on composite panels

18

Composition of roof

Composite panel

Tape / aluminium faced

Breather membrane


1

2

3

4

1

2 3

4

19


With this warm roof system VM ZINC®

PLUS standing seam can be installed on

composite panels without ventilating the

underside of the VM ZINC® PLUS.

For all applications:

1. the substrate of the composite panels

(on the warm side of the roof panel)

must be covered with a vapour control

layer material with vapour resistance

always greater than the sum of the

resistance of the elements fixed above

the vapour control layer. It must be

adapted to the internal humidity load

of the building.

2. the joints between the composite

panels must be totally air tight and

have good vapour retarder properties.

3. breather membrane (Tyvek type

2480b or equivalent) should be

installed between the VM ZINC® PLUS

and the composite panels.

This breather membrane must be

open to water vapour and completely

watertight. The breather membrane

must end into the gutter.

Structure

A choice of:

• Upper layer of the composite panel:

solide wood panels or other panels, all

certified for roofing applications (min.

thickness: 12 mm).

Area of application



1 to 4.






• 0.7 mm thick.

Particular attention to be put on

certification of the upper facing of

these panels for roofing usage.

Upper layer able to resist pull out

forces of 50daN/standing seam fixing

clip (dynamic testing method).

• Galvanised steel internal and external

facing (min. thickness: 0.7 mm for

external facing).

Particular attention to be put on

certification of these panels for roofing

usage.

Upper layer able to resist pull out

forces of 50daN/standing seam fixing

clip (dynamic testing method).

No delamination of the panel and

pull out resistance decrease under

wet conditions.


installation of the composite panels and

membranes is simply an indication.



recommendations of the panels and

membrane manufacturers.


Arch. P. Poncin - QUARTZ-ZINC®>

Specifications:


: See www.vmzinc.ie



20

Sliding clips with countersunk screw holes

Fixed clips with countersunk screw holes


205709000 1 stainless steel 100


Fixing the clips

Chrome coated screws of a diameter,

length and type appropriate to the

structure.

1

2

pitch min. 1°

pitch min. 1°

21

Gutter



VM ZINC® PLUS


continuous


w = 80 mm, 2 per m



th = 0.7 mm



9. PLULINE® gutter



12. composite panel





w = 80 mm, 2 per m


VM ZINC® PLUS , continuously soldered


5. roof boarding



w = 250 mm, 2 per m



400 x 2000 mm

9. ventilated space





14. composite panel



snow guards.





- When rendering a wall it is recom mended



Variation

Variation

The solutions presented here are simply examples and not the only ones possible.


Examples of details

pitch min. 1°

pitch min. 1°

pitch min. 3°


22




VM ZINC® PLUS


w = 80 mm, 2 per m


continuous


th = 0.7 mm


7. roof boarding



continuous

10. composite panel


- In some cases snow guards and/or heating cables

should be planned.

- When rendering a wall it is recommended to protect

the VM ZINC®.



with rolled bead

Wall abutment head




4. composite panel


6. roof boarding


w = 80 mm, 2 per m


9. fixing wedge


23

Roof abutment



w = 80 mm, 2 per m


the wall



6. composite panel

7. fixing wedge

Ridge



3. ridge piece in VM ZINC® PLUS


w = 80 mm, 2 per m

5. rafter


7. composite panel


pitch min. 3°


24

Valley detail (to be used for roofpitches in excess of 14°)



w = 80 mm, 2 per m





6. composite panel


4* In some conditions a water flow controler can be necessary.

Verge


2. composite panel





6. wall



snow guards.


25

Hip





w = 80 mm, 2 per m

5. rafter


7. composite panel

Box valley gutter


2. continuous eaves apron strip in VM ZINC® PLUS


w = 80 mm, 2 per m


continuous

5. overflow





10. composite panel



section DD

section BB

section AA

saddle piece


skylight


section CC


6


26




3. composite panel


5. roof boarding


w = 80 mm, 2 per m

7. fold 20 mm



9. flashing in VM ZINC® PLUS to witch the

standing seam is fixed




Mansard



VM ZINC® PLUS


w = 80 mm, 2 per m


continuous

5. composite panel


For a mansard pitch stronger than 60°, it’s

IMPORTANT to contact the technical service

of VM ZINC®.


In some cases it is recommended to



section AA

section CC



skylight

saddle piece section BB

27






insulation




8. composite panel






5. roof boarding

6. composite panel


w = 80 mm, 2 per m

8. double welt in VM ZINC® PLUS, continuously

soldered


10. fold 20 mm







Overview

Standing Seam - RoofingWarm roof on cellular glass

28

Composition of the roof

Interior finish

Support structure (e.g. steel deck)

Cellular glass

Galvanised steel plates

Bituminous membrane

Separation layer / 1000 guage PE film


1

1

2

2

3

3

4

4

5

6

7

56

7

29


This warm roof system allows the

installation of VM ZINC® PLUS standing

seam on cellular glass insulation without

penetrating fastenings.

Structure

• Cellular glass glued to its structure.

• The cellular glass is then covered with

a coating of bitumen.

• Galvanised steel plates, which the

insulation manufacturer has to supply,

are glued to the bitumen coated

cellular glass. The plates must be

positioned in collaboration with the

VM ZINC® installer.

• A reinforced heat-sealable membrane

is then sealed by torching to the

entire surface of the insulation

without overlapping. This membrane

also covers the plates.

Area of application



1 to 5.

• On all structures compatible with

the installation of cellular glass (e.g.

wood, concrete, steel deck, according

to the manufacturer’s specifications).

• Renovation of waterproof bitumen

roof (according to the cellular glass

manufacturer’s specifications).






• 0.7 mm thick.

• In order to avoid any contact between

the VM ZINC® PLUS and the bituminous

membrane, a transparent polyethy-

lene separation membrane is fixed

with an overlap of + 150 mm.

• The VM ZINC® PLUS panels are fixed

to this structure with special clips

screwed into the galvanised steel

plates.


installation of insulation, plates and

membranes is simply an indication.



recommendations of the insulation

manufacturer.

Arch. S & C Molina - QUARTZ-ZINC® PLUS>


Specifications:


: See www.vmzinc.ie


Fixing the clips

4,8 mm Philips no. 2 conical head

recessed screws, with a minimum length

of 16 mm, or an equivalent with the

same characteristics must be used.


30






1

2

pitch min. 1°

pitch min. 1°

31

Gutter


2. continuous eaves apron strip in VM ZINC®PLUS

3. continuous folded strip in VM ZINC® PLUS,

th=0.7 mm


w = 80 mm, 2 per m



th = 0.7 mm



9. PLULINE® gutter


11. PE-film

12. bituminous membrane

13. cellular glass





w = 80 mm, 2 per m


VM ZINC®, soldered


5. roof boarding



w = 250 mm, 2 per m


dimensions maximum for each panel:

400 x 2000 mm

9. ventilated space





14. cellular glass


16. PE-film


snow guards.





- When rendering a wall it is recom mended



Variation

Variation

The solutions presented here are simply examples and not the only ones possible.


Examples of details

pitch min. 3°

pitch min. 1°

pitch min. 1°


32




VM ZINC® PLUS


w = 80 mm, 2 per m


continuous


th = 0.7 mm


7. roof boarding



continuous


11. PE-film

12. cellular glass

- In some cases snow guards and/or heating cables

should be planned.

- When rendering a wall it is recommended to protect

the VM ZINC®.



with rolled bead

Wall abutment head



3. PE-film


5. cellular glass

6. roof boarding


w = 80 mm, 2 per m


9. fixing wedge



- When rendering a wall it is recommended to protect the VM ZINC®.

33

Roof abutment



w = 80 mm, 2 per m


the wall


5. PE-film


7. cellular glass

8. fixing plate in galvanised steel

9. fixing wedge

Ridge




w = 80 mm, 2 per m


5. rafter

6. PE-film


8. cellular glass



pitch min.


34

Valley detail (to be used for roofpitches of minimum 14°)



w = 80 mm, 2 per m

3. continuous double welt strip in VM ZINC® ,

soldered


5. PE-film


7. cellular glass




Verge


2. cellular glass





6. wall

7. PE-film




snow guards.



35

Hip




w = 80 mm, 2 per m


5. rafter

6. PE-film


8. cellular glass

Box valley gutter



VM ZINC® PLUS


w = 80 mm, 2 per m


continuous

5. overflow




9. PE-film


11. cellular glass



section DD

section BB

section AA

saddle piece


skylight


section CC



36




3. cellular glass


5. roof boarding



w = 80 mm, 2 per m

8. continuous double welt strip in VM ZINC®

PLUS, continuously soldered

9. flashing to witch the standing seam is fixed


11. PE-film


13. fold 20 mm


Mansard


2. continuous eaves apron strip in VM ZINC®

PLUS


w = 80 mm, 2 per m

4. folded clip in VM ZINC® PLUS, th = 0.7 mm,

continuous

5. cellular glass


7. PE-film


For a mansard pitch stronger than 45°, it’s

IMPORTANT to contact the technical service

of VM ZINC®.


In some cases it is recommended to



section AA

section CC



skylight

saddle piece section BB

37



2. PE-film



insulation




8. cellular glass







5. roof boarding

6. cellular glass


w = 80 mm, 2 per m

8. continuous double welt strip in VM ZINC® ,

soldered


10. PE-film



13. fold 20 mm


Overview





Standing Seam - Roofing Ventilated roof on incompatible support

38


Interior finish


Insulation

Breather membrane

Ventilated air space

Rafter

Incompatible support

VM ZINC® PLUS Standing seam

1

2

3

4

5

6

7

8

1

2

4

67

8

5

5

3

39


Areas of application

• Roofs with a pitch from 3° to vertical.


1 to 4.

• Both renovation and new buildings.






• PIGMENTO & PIGMENTO Plus.

• 0.7 mm thick.

of 50 daN per standing seam

fixing clip). This resistance needs

to be guaranteed even through

ageing of the system and humidity

circumstances through the roof

structure

• Maximumdifferenceinheightof

1 mm between support elements of

the VM ZINC® PLUS. The deflection

measured under a rigid 600 mm long

straight edge cannot exceed 2 mm in

all directions.

• Thenails/screwsarecountersunkin

order to avoid any contact with the

VM ZINC® PLUS.

Arch. - QUARTZ-ZINC® PLUS>

Arch. Lord Aeck Sargent Architecture - ANTHRA-ZINC® PLUS>

Specifications:


: See www.vmzinc.ie


• VM ZINC® PLUS is installed on the

incompatible support (plywood or panels).

• A 40 mm* continuous air gap must be

left clear beneath the support of the

VM ZINC® PLUS, on all the roof pitches.

• Continuous ventilation openings are

made at the top and bottom.

• In order to keep the integrity of the

roof, it is recommended to install a

breather membrane on the cold side

of the insulation and a vapour control

layer adapted to the internal humidity

load of the building, on the warm side

of the insulation.

Possible substrates

• Plywoodpanelsthatarenot

compatible with VM ZINC® must be

certified for roofing application and at

least 18 mm thick.

• All the substrates must be flat,

dry, and sufficiently resistant to

all the stresses to which they will

be submitted (e.g. pull out force

Standing Seam - Roofing Ventilated roof on incompatible support

40


Fixing the clips

Chrome coated screws of a diameter,


structure.




205709000 1 Stainless steel 100

205710000 2 Stainnless steel 250

1

2

41

The solutions presented here are simply examples and are not the only possibilities.

Our technical assistance department is available to study other alternatives with you.

Examples of details



Gutter


2. Sheet clip in vm zinc® plus

th= 0.7 mm , l=80 mm, 2 per m

3 continuous eaves apron strip in VM ZINC ®

PLUS

4. plywood, 5 mm thinner than adjacent

5. plywood

6. ventilated space


continuous


9. continuous sheet strip in VM ZINC®plus,

th = 0.7 mm


11. PLULINE® gutter


13. mesh (2 mm max. weave)


Box gutter (gutter outside the wall) 1. standing seam in VM ZINC®

2. sheet clip in VM ZINC®, th = 0.7 mm,

w = 80 mm, 2 per m

3. continuous welting strip in VM ZINC®, soldered


5. plywood

6. boxed gutter in VM ZINC® PLUS


continuous

8. fascia with welted panels in VM ZINC® PLUS,


400 x 2000 mm




12. packers laid to gutter fall

13. continuous strip in VM ZINC® PLUS,

th = 0.7 mm

14. ventilated space


snow guards.



pitch 1°

14

pitch 1°

R=overlap page 76


snow guards.




snow guards.

- When cementing a wall it is recommended to


Standing Seam - RoofingVentilated roof on incompatible support

42

pitch min. 3°

pitch 1°

pitch 1°

9

12

for curved roof

L = page 76




VM ZINC® PLUS


w = 80 mm, 2 per m

4. folded strip in VM ZINC®PLUS, th = 0.7 mm,

continuous



7. plywood

8. box gutter in VM ZINC®PLUS

9. bracket in VM ZINC®PLUS, th = 0.7 mm,

continuous

10. packers laid to gutter fall


12. Ventilated space

Wall abutment head




w = 80 mm, 2 per m


5. timber

6. plywood

7. non-continuous timber

8. mesh (2 mm max weave)

9. fixing wedge



continuous



43

pitch min. 3°

for curved roof

Ridge

1. ventilated space

2. plywood

3. sprocket piece




7. sheet clip in VM ZINC® PLUS, th=0.7 mm,

w=80 mm, 2 per m

8. folded clip in VM ZINC® 1 mm. L =50mm,

3 per m.


10. breather membrane, in accordance with

specifications

Roof abutment



w = 80 mm, 2 per m


the wall



6. plywood

7. ventilated space


44



snow guards.





w = 80 mm, 2 per m

3. continuous welt strip in VM ZINC®, soldered

continuously

4. plywood

5. plywood

6. valley gutter in VM ZINC®

7. ventilated space



Verge


2. plywood


(manually adapted/transformed)

4. fascia in VM ZINC® max. 400 x 2000 mm


6. wall

7. ventilated space


45


- When rendering a wall it is recom mended to protect the VM ZINC®.

Hip

1. Ventilated space

2. plywood

3. sprocket piece




7. sheet clip in VM ZINC® PLUS

8. folded strip in VM ZINC® PLUS



Box valley gutter 1. standing seam in VM ZINC® PLUS


VM ZINC® PLUS

3. sheet clip in VM ZINC®PLUS, th = 0.7 mm,

w = 80 mm, 2 per m


continuous



7. plywood


9. ventilated space


11. breather membrane, in accordance with

specifications


13. overflow


section CC

section AA

section DD

section BB

saddle piece


skylight

standing seam in VM ZINC®independent flashing




3. fold 20 mm


5. plywood

6. ventilated space


w = 80 mm, 2 per m


soldered

9. flashing VM ZINC® PLUS to witch the standing

seam is fixed



12. fold 20 mm

Overview To allow for the expansion of the VM ZINC®, we cover the chassis of the skylight with an independent flashing.This flashing is laterally locked in the standing seam.

Mansard



PLUS


w = 80 mm, 2 per m


continuous


6. plywood


8. ventilated space




snow guards.



46

Standing seam in VM ZINC®


section CC

section AA

saddle piece

skylight

section BB

47



2. plywood

3. continuously soldered tube in VM ZINC®


insulation




8. breather membrane neatly glued

9. ventilated space




3. fold 20 mm


5. plywood

6. ventilated space

7. sheet strip in VM ZINC® PLUS, th = 0.7 mm,

w = 80 mm, 2 per m

8. double welt in VM ZINC®, continuously

soldered

9. standing seam fold, laid and soldered

10. water deflector piece, min pitch 0.5°

11. breather membrane neatly glued in the

corners






Or we recommend the use of chimney/ flue cowl-conical

Overview

Standing Seam - RoofingVentilated roof on roof boarding


Interior finish


Insulation

Breather membrane

Ventilated air space

Rafter

Roof boarding

VM ZINC® standing seam

Arch. M + W Pearce - Natural VM ZINC®

1

2

3

4

5

6

7

8

1

2

4

67

8

5

5

48

3

49

roof boarding

Characteristics of this technique • VM ZINC® is installed on the roof

boarding.

• A 40 mm* continuous air gap must be

left clear beneath the roof boarding,

on all the roof pitches.


made at the top and bottom.







of the insulation.

Structure

• Clean and dry 100 to 150 mm wide,

18 or 24 mm thick softwood boarding,

according to the rafter centres.

• Any wood treatment products

(fungicides, insecticides) must be dry

and completely neutral in relation to

VM ZINC® (cf appendix 6 page 80).

Areas of application

• Roofs with a pitch from 3° to vertical.


1 to 4.

• Both renovations and new buildings.


• Natural VM ZINC®, 5 pre-weathered

VM ZINC® colours QUARTZ-ZINC®,

ANTHRA-ZINC®, PIGMENTO® red, green,

blue: 0.7 or 0.8 mm thick.

• 6 Bilacquered VM ZINC® colours:

0.7 mm thick. Non standard

bilaquered VM ZINC® colours are also

available (for large quantities, any

colour - min. orders 10 Tons).

Please contact our technical office for

further information.

• The roof boards are fixed perpen-

dicular to the direction of the pitch

leaving a 3 to 5 mm gap between

them.

They are securely fixed to the

structure.

• Maximum difference in height of

1 mm between roof boards.

The deflection measured under a rigid

600 mm long straight edge cannot

exceed 2 mm in all directions.

• The roof board nails are countersunk

in order to avoid any contact with the

VM ZINC®.

*Cf. appendix 5 page 79

>

>Arch. M + W Pearce - Natural VM ZINC®

Specifications:


: See www.vmzinc.ie

Installation of this systemsee pages 66 to 79


Fixing the clips

With either:

• Ring shark, galvanised or stainless

steel nails.

• Chrome coated screws of a diameter,


structure.

50


Sliding clips

Fixed clips

Code Fig description material qty/box


211960000 4 stainless steel 250Nail-in sliding clips without countersunk screw holes

Screw in sliding clips with countersunk screw holes

Code Fig description material qty/box


212156000 2 stainless steel 100Nail-in fixed clips without countersunk screw holes

Screw-in fixed clips with countersunk screw holes

4

3

2

1

51



pitch min. 1°

pitch min. 1°

Junction gutter

1. standing seam in VM ZINC®


w = 80 mm, 2 per m


4. eaves boards, 5 mm thinner than adjacent

boards

5. roof boarding

6. ventilated space

7. folded clip in VM ZINC®, th = 1 mm,

w = 250 mm, 2 per m

8. flashing in VM ZINC®

9. continuous sheet strip in VM ZINC®,

th = 0.8 mm


11. PLULINE® gutter




Box gutter (gutter outside the wall, ventilation inlet through soffit)



w = 80 mm, 2 per m


continously soldered


boards

5. roof boarding



w = 250 mm, 2 per m



400 x 2000 mm








snow guards.





snow guards.



Examples of details

Variation

Variation

pitch min. 1°

pitch min. 1°

Box gutter (gutter inside or on the wall, ventilation inlet through gutter)




w = 80 mm, 2 per m


w = 250 mm, 2 per m



boards

7. roof boarding



w = 250 mm, 2 per m


11. breather membrane (optional)

12. continuous sheet strip in VM ZINC®,

th = 0.8 mm



snow guards.





52


with rolled bead

pitch min. 3°

Wall abutment head




w = 80 mm, 2 per m

4. continuous capping piece in VM ZINC®

5. timber

6. roof boarding



9. fixing wedge



w = 250 mm, 2 per m




pitch min. 3°

53

Roof abutment



w = 80 mm, 2 per m

3. VM ZINC® stepped flashings chased into

the wall

4. fixing wedge


6. roof boarding


8. ventilated space

Ventilated ridge

1. ventilated space

2. roof boarding

3. sprocket piece





w = 80 mm, 2 per m


w = 50 mm, 3 per m

9. ridge piece in VM ZINC®, th = 0.8 mm


Folded clip in VM ZINC®



54




w = 80 mm, 2 per m




boards

5. roof boarding

6. valley gutter in VM ZINC®

7. ventilated space




Verge


2. roof boarding


(manually adapted/transformed)

4. fascia in VM ZINC® max. 400 x 2000 mm

5. continuous edge flashing in VM ZINC®

6. wall

7. ventilated space



snow guards.


55

- In some cases it is

recommended to

provide snow guards

- When rendering

a wall it is recom-

mended to protect

the VM ZINC®

Ventilated hip

1. ventilated space

2. roof boarding

3. sprocket piece





w = 80 mm, 2 per m


w = 250 mm, 2 per m

9. hip piece in VM ZINC®, th = 0.8 mm

10. breather membrane Folded clip in VM ZINC®

Box valley gutter




w = 80 mm, 2 per m


w = 250 mm, 2 per m or



boards

7. roof boarding


9. ventilated space




13. overflow


section CC

section AA

section DD

section BB

saddle piece


skylight

standing seam in VM ZINC® independent flashing

5




3. fold 20 mm


5. roof boarding

6. ventilated space


w = 80 mm, 2 per m



9. flashing to witch the standing seam is fixed


11. rafter


corners

Overview To allow for the expansion of the VM ZINC®, we cover the chassis of the skylight with an independent flashing.This flashing is laterally locked in the standing seam.

Mansard (with ventilation)




w = 80 mm, 2 per m


w = 250 mm, 2 per m


boards

6. roof boarding


8. ventilated space




snow guards.



56

10

10

57

standing seam in VM ZINC®


section CC

section AA

saddle piece

skylight

section BB



2. roof boarding



insulation





9. ventilated space

10. soudure continue




3. fold of 20 mm


5. roof boarding

6. ventilated space


w = 80 mm, 2 per m


continuously soldered


10. water deflector piece, min pitch 0.5°

11. rafter


corners






Overview

pitch min. 3°

see joint detail

pitch min. 1°

58







of the insulation.

Structure

See structure recommendations

on page 9.


Area of application

• From a 3° pitch.



• Natural VM ZINC®, QUARTZ-ZINC®,

ANTHRA-ZINC®: 0.7 or 0.8 mm thick.


0.7 mm thick.

• PIGMENTO®


• The VM ZINC® is installed on the roof

boarding.

• A 40 mm* (minimum) ventilated

air gap must be left under the roof

boarding of the entire roofing area.

• Continuous ventilation openings must

be made at the top and bottom of the

roof*.

Head verge


2. saddle piece


w = 80 mm, 2 per m



w = 250 mm, 2 per m

6. sprocket piece

7. capping piece in VM ZINC®

8. roof boarding

9. discontinuous roof boarding



Standing Seam - RoofingExample: very low pitch, ventilated roof

Example of renovation of a roof with a low pitch





5. head verge with saddle piece in VM ZINC®

6. existing roof

7. new insulation

Specifications:


: See www.vmzinc.ie


be made*.

Structure

See structure recommendations

on page 9.


59

Area of application






0.7 mm thick.

• PIGMENTO®


• The VM ZINC® is installed on the roof

boarding.

• A continuous air gap of at least

40 mm* must be left under the roof

boarding.

Standing seam Specific applications

Secret box gutter with bullnose detail



w = 80 mm, 2 per m


soldered


boards

5. roof boarding








400 x 2000 mm


13. junction saddle piece in VM ZINC®



Detail between the welted panels (n° 11).


Specifications:


: See www.vmzinc.ie

Standing Seam - FacadeVentilated cladding, horizontal panels installed on boarding


• The VM ZINC® is installed on the

boarding.

• A continuous 20 mm* (minimum)

ventilated air gap is to be left behind

the boarding on the entire facade.


be made at the top and bottom*.

• An efficient rain screen is recom-

mended. The insulation panels

must be sufficiently rigid and well

anchored to their structure to prevent

them from moving and blocking the

ventilation space (Cf. appendix 5

page 79 and refer to the insulation


• To prevent potential quilting or canning

of the tray centre’s, we recommend

that seam centres are limited to

430mm. (coil width 500 mm)

Structure

• Clean and dry 100 to 150 mm wide by

18 or 24 mm thick softwood boards,

depending on the centre-to-centre

distance between bearing structure

elements.



and completely neutral to VM ZINC®

(see appendix 6 page 80).

Area of application

• Roofs with a pitch from 75° to

90°.

• Both renovation and new

buildings.

• Classes of internal humidity

load: 1 to 4.


• Natural VM ZINC®, QUARTZ-

ZINC®, ANTHRA-ZINC®: 0.7 or

0.8 mm thick.


0.7 mm thick.

• PIGMENTO®

• 75° to 90° facades: install boards

vertically leaving 3 to 5 mm between

them.

• 90° facades: install boards vertically at

400 mm centre-to-centre. However,

for the areas of the facade nearby

traffic, continuous boarding should be

installed to a height of 2 m.


1 mm between roof boards. The

deflection measured under a rigid 600

mm long straight edge cannot exceed

2 mm in all directions.

• The nails fixing the boards are

countersunk in order to avoid any

contact with the VM ZINC®.


60

Arch. Brock Carmichael - QUARTZ-ZINC®>


Specifications:


: See www.vmzinc.ie

pitch min. 1°

61

Fixing clips to be used and how to fix them

Examples of details



Consult page 10 of this manual.

However, since the last panel (at the top of the cladding) is specially profiled (L profile stiffener is

mandatory), special sliding clips are soldered in place with spacing of 3 clips/m (see detail).

Junctions with window


2. boarding 3/m, vertical (ventilation)


w = 80 mm, 2 per m

4. breather membrane/rain screen



soldered



9. window frame

10. continuous strip in VM ZINC®


w = 250 mm, 2 per m



14. insulation

Facade installation: see pages 66 to 79

Verge junction

pitch min. 1°

pitch min. 1°

62

End of cladding


2. edge flashing in VM ZINC®


4. vertical boarding 3/m (ventilation)


6. breather membrane/rain screen (optional)



w = 80 mm, 2 per m


w = 250 mm, 2 per m

10. continuous strip in VM ZINC®

11. insulation

Standing Seam - FacadeVentilated cladding, horizontal panels installed on boarding

Head cladding



w = 80 mm, 2 per m



w = 250 mm, 2 per m


6. vertical boarding 3/m (ventilation)




10. insulation

63


• The VM ZINC® is installed on the

boarding.

• A continuous 20 mm* (minimum)

ventilated air gap is left clear behind

the boarding on the entire facade.


made at the top and bottom*.

• An efficient rain screen is recom-

mended. The insulation panels

must be sufficiently rigid and well

anchored to their structure to prevent

them from moving and blocking the

ventilation space (Cf. appendix 5

page 79 and refer to the insulation


• To prevent potential quilting or canning

of the tray centre’s, we recommend

that seam centres are limited to 430mm

(coil width 500 mm).

Structure

• Clean and dry 100 to 150 mm wide by

18 or 24 mm thick softwood boards,

depending on the centre-to-centre

distance between bearing structure

elements.



and completely neutral to VM ZINC®

Area of application


• Both renovation and new buildings.


1 to 4.





0.7 mm thick.

• PIGMENTO®

(cf. appendix 6 page 80).

• 75° to 90° facades: install boards

horizontally leaving 3 to 5 mm

between them.

• 90° facades: install boards horizontally

at 400 mm centre-to-centre. However,

for the parts of the facade nearby

traffic, continuous boarding should be

installed to a height of 2 m.


1 mm between roof boards. The

deflection measured under a rigid 600

mm long straight edge cannot exceed

2 mm in all directions.

• The nails fixing the boards are

countersunk in order to avoid any

contact with the VM ZINC®.


Standing Seam - FacadeVentilated cladding, vertical panels installed on boarding

Arch. Belaen & Van de Loock - QUARTZ-ZINC®


>

Specifications:


: See www.vmzinc.ie

pitch min. 1°

64

Fixing clips to be used and how to fix them

Examples of details



Consult page 10 of this manual.


Junctions with window


2. boarding


w = 250 mm, 2 per m




soldered



9. window frame


w = 80 mm, 2 per m

11. loadbearing structure – ventilated space


13. insulation

Verge junction

pitch min. 1°

pitch min. 1°

65

End of cladding


2. continuous edge flashing in VM ZINC®


w = 80 mm, 2 per m


w = 250 mm, 2 per m


6. boarding

7. mesh (max. gap size 2 mm)

8. ventilated space


10. insulation

Head cladding


2. boarding

3. mesh (max. gap size 2 mm)


w = 250 mm, 2 per m



7. ventilated space


9. insulation


standing seam530 mm

(1) (1)

Standing seamSystem installation - General Information

Umicore organises practical training courses on the installation of VM ZINC® standing seam:

•Reserved for roofing professionals.•Organised in a covered, specially equipped training centre.

www.vmzinc.co.uk

www.vmzinc.ie

01992 822288

Expansion of VM ZINC®

Any work involving VM ZINC® must allow it to expand and contract freely. The linear expansion of VM ZINC®

is 0.022 mm per metre and per degree centigrade.

Example:

In United Kingdom and the Republic of Ireland, the temperature range to bear in mind is from – 20°C in

mid-winter to + 80°C on the surface of the metal in the sun at the height of the summer. Assuming an

ambient temperature of 20°C during installation, we have to take into account:

• An additional 60°C (expansion)

• 40°C less (contraction).

For a 10 metre long panel:

• anticipate an 0.022 mm x 10 x 60 = 13.2 mm increase in length

• anticipate 0.022 mm x 10 x 40 = 8.8 mm contraction.

Layout

either:

• a joint on the central axis of the

surface to be covered.

• the middle of a sheet on the central

axis of the element to be covered.

Dormers, chimneys or other obstacles

must be taken into account before

deciding layout.

(1) see page 67.

standing seam

(1) (1)

66

surface to be covered

surface to be covered

Off-centre layout

Layout centred on axis – section

67

Measuring for and ordering profiled panels

Standard measurements:

Useable width: 530 mm

Height of standing seam: 25 mm

Thickness: (0.7 mm) - 0.8 mm

To estimate the weight of VM ZINC® for

the full surface, apertures and joints

included, based on 600 mm between

joints:

• Thickness 0.7 mm: + 5.66 kg/m2

• Thickness 0.8 mm: + 6.47 kg/m2

Before accepting any order, the spacing

between joints and marking of the

panels for the building to be covered

must be studied very carefully.

There must be a sufficient reserve

of material on the lateral panels for

upstands to be made along the edges,

along the walls etc.

It is best to order panels that are about

180 mm longer than the part to be

covered. For components which are not

parallel to the base and/or the head a

bigger reserve should be planned for.

For a curved roof the exact bend radius

of the structure must be given when

the order is placed. During profiling, this

radius is increased by 50 to 100 mm, so

that the panel moulds perfectly to the

shape of the roof.

For conical roofs please consult our

PRO-ZINC department.

When using standing seam for cladding,

in order to prevent potential “quilting?

or “canning? of the tray centre’s, we

recommend that seam centres are

limited to 430mm. It is possible to use

530mm seam centre’s, but there is a

potential for this phenomenon to occur.

For projects located in areas with a high

wind level we advise the use of sheet

widths of max. 400 mm.

In special cases, i.e. theatres, VM

ZINC® has developed an acoustical zinc

system. For more information on these

applications, please contact our technical

service.

L profile

530 mm

U profile

4 mmOverlapping of sheets

before crimping

Sheet profile

Single lock

Double lock

Maximum length of panels

The maximum length of roofing panels is 10 m.

However, experience has shown that:

• Onroofs,ifthefixingclipsareinstalledaccordingtoparticularspecifications,

panels up to 13 m can be fixed. Particular care must be taken with the installation

of this type of application.

• Atleastthreepeopleareneededtohandlethepanelswithoutdamagingthem.

Consult us first. The longest sides must be divided by one or several steps or

welts.

• Forfacades,thelengthofthepanelsislimitedto6m,bothforeaseofhandling

and to allow for expansion.

68

Transportation and storage of profiled VM ZINC®

The panels must be transported and

stored vertically, standing on the

L profile in containers designed for them.

They must be transported and stored

in dry conditions and in a constant

temperature in order to avoid the

formation of white rust.

White rust forms on the surface of

VM ZINC® when the latter comes in

contact with humidity in the absence

of carbon dioxide. In this case, the

protective passivated layer cannot form

and white rust appears on the surface.

Unlike the patined layer, white rust

provides no protection and leaves

unattractive, indelible marks on the

roof or facade. Consequently, we do not

recommend installing panels that have

been attacked by white rust.

Standing seamSystem installation

Before installation

The roofer must ensure that:

• the structure is dry, clean and

free of any rubbish (nails, leaves,

vegetation, etc.). All the substrates

must be flat, dry, and sufficiently

resistant to all the stresses to which

they will be submitted (e.g. pull out

force of 50daN per standing seam

fixing clip).

Maximum flush tolerance of 1 mm. In

the case of installation on a separation

membrane, the roofer must also make

sure that this is clean and dry.

• Thepanelshavethecorrect

measurements and profiles.

• Thestructureconforms(flatness,

compatibility, etc.) to the

specifications.

Direction of installation

Installation can begin on the right or

the left, regardless of the direction of

prevailing winds. Crimping can be done

either from bottom to top or top to

bottom! Some electric crimping machines

only allow crimping in one direction!

So check before deciding on installation

direction!

Installing VM ZINC®

To avoid micro-cracks in the VM ZINC®

to the right of the folds, do not work

it when the temperature of the metal

is below 7°C.

PIGMENTO requires working specifications

with PIGMENTO are slightly different

Working VM ZINC®

69

All the junctions at the top of the

roof (ridge cap, wall abutment, upper

edge) are made using the saddle piece

technique.

For cladding, please consult the sketches

on pages 61 to 65.

Standing seam System installation - Preparation and fixing of the top of the panels

For watertightness safety reasons we

recommand the usage of the “saddle

piece” which is in our opinion the most

efficient solution.

However another solution (folded seam)

exists, the watertightness of this solution

depends highly on the competence of the

roofer. It remains the architect choice to

accept or refuse this alternative.

The cut out joint is still allowed

Fig. C

Fig. A

Fig. B

Fig. C

Preparation of the tray with an “exterior secured fold” Pitch max. 60°

Preparation of the tray with an “interior secured fold”

Fig. D

saddle piece

Fig. E Fig. F

saddle piece

Fig. D

Fig. F

Fig. E

hight of upturn(80 + 20 mm)

to cut out

β = 45°

place tray B on tray A

BA

to cut out

BA

Fig. A

Fig. B

Fig. C

secured fold

part to be turned up according the pitch of the roof

to fold after installationof the saddle piece

secured fold (20 mm)

part to be turned up to vertical

to fold after installationof the saddle piece

corner to be folded forward

height of upturn(80 + 20 mm)

α

α = 90° - pitch 2

place tray B on tray A

corner to be folded back

secured fold

to cut out

70

36

24

25,5

Type of clips to be used and fixing method:

You will find the clips specified for each type of

application on pages 10, 20, 30, 40 and 50.

Zinc clips must not be used: they do not offer

sufficient wind uplift resistance and because they

are too thick, they prevent free expansion of the

panels.

In most cases the fixed clips hold the panels in place

at the highest point and direct expansion downwards.

Two clips are placed one behind the other at each

joint (3 for panels longer than 10 m) (Fig. A).

For pitches greater than 75°, the seam is cut and fold

(see diagram) to prevent the panel from slipping

downwards (Fig. B).

The sliding clips are fixed to the structure taking

care always to centre the sliding component in the

slot.

Fig. B

Standing seamSystem installation - 3 stage installation of panels

1. Laying the panel on the structure

• Lay the panel on the structure

• TheLprofileoftheprecedingpanelandtheclips

that have been fastened to the panel and fixed to

the structure are covered by the U of the next panel,

avoiding stresses and lateral traction.

2. Installation of clips

Number of clips for roofing:

The number of clips on the roof depends on the

climate zone. The diagram page 71 represents the

installation of standard 530 mm useable width

panels, for normal wind loads.

Zone a (middle): 1 clip every 330 mm (6 pieces/m2)Zone b: 1 clip every 200 mm (9 pieces/m2)Zone c (edges): 1 clip every 150 mm (11 pieces/m2)

2

1

71

1. fixed clips2. sliding clips

Fig. A

3. Preparation of the panels for crimping

• Dependingonthetypeofcrimper,a150mmlongsinglelockseamismade

using 50 mm flat nippers or first fold seamers (special hand nippers) at the top

or bottom of the standing seam panel. This allows the crimper to be inserted in

the joint.

• Thismanoeuvreisrepeatedabouteverymetre,sothatthepanelsdonot

separate during crimping and are not lifted by wind action.

NB: At the bottom of the pitch, the fixing clips are placed

as close as possible to the eaves strip which must not be

penetrated in any circumstances.

The installation sequence described here is the one we recommend.However, it is possible to use other sequences.

b

b

b

min. 1100 mm

600 mm

600 mm

eave

min. 1100 mm

b

a

c

c

c

c

ridge

72

Crimping with an electric crimping machine

There are special machines for particular uses: flat

panels, curved panels, cladding, multi-function. Some

machines are reversible while others work only in one

direction (upwards or downwards).

An electric crimping machine should not be used in wet

conditions (risk of electrocution).

Crimping:

Preparation of standing seam for closing with an electric

seamer.

•Makeasingleseambyhandalong

150 mm at one end of the pitch (Fig A).

•Fitthemachineontothejoint(*)

•Closethehandle

For roofs with a 3° to 75° pitch, it is compulsory to join

strips using double lock seams.

Do not crimp when the metal temperature is below 7°C

or else use a crimper equipped with a heater.

Crimping can be done using an electric or hand crimper.

150 mm

(*) Should it be difficult to place the machine on to the

single folded profile, make a double fold by hand over

a length of 350 mm and a further single fold along the

length of the 150 mm of the profile. Place the machine

on the double folded joint and firmly close the roller arm

of the machine (Fig. B).

150 mm

350 mm

Fig. B

Standing seamSystem installation - Crimping

Fig. A

•Startupthemachine:withswitchinforwardposition

•Themachinemovesforwardautomaticallyandmakes

a double seam in one pass.

•Attheendoftheseam,supportitwhilekeepingit

perfectly parallel to the roof.

•Theseamingmachinecanbestoppedatanypoint

along the seam, be lifted off and then replaced on it.

•Inthecaseofverysteeppitches,tiearopetothe

front handle and help the machine by pulling it up to

the ridge of the roof. To move the machine down the

pitch, open the pressure lever and let it descend the

length of the folded standing seam with the help of

the rope.

73

Large flat pliers

Hand crimping - Tools

Hand crimping

The joint is closed once along its entire length using first fold seamers (special hand

nippers).

The second fold is made using second fold seamers.

Second fold seamer

Small bending pliers

Angled pliers

Roofing seamer

Installation:

Fig. A. Overlap sheet 2 on sheet 1, which is held in place by the previously

installed fixing clips, by placing the sheets one on top of the other.

Fig. B. 1st fold made with the seaming pliers (manual single seaming).

Fig. C. 2nd fold (manual double seaming).

Fig. D. Close the last few centimetres of the sheets at the abutment with a mallet and roofing seamer.

2

1

Fig. C Fig. DFig. B

Installation

Fig. A

200 mm

200 mm

Seaming recommendations:

• Donotseamwhenitisraining(dangerofelectrocution)

• Foroxidisedzinc,useaclothsoakedinoiltogooverthe

standing seam.

A minimum space of 200 mm is needed to remove the

seamer.

Finish seaming the 200 mm by hand (Fig E).

The lateral space required for the seamer is 200 mm (Fig F).

The installation plan (layout –see page 66) should be studied

beforehand in order to limit manual interventions as much as

possible, and ensure optimal use of the machine.

Fig. E

Fig. F

First fold seamer

Mallet

74

Distinctive characteristics of standing seam on facades

Installation (vertical panel):

The sheet is fixed either with two nails or with fixed clips at the top (see pages

62 and 65).

At the bottom, the edges of the sheets are cut out. The flat part of the sheet is

folded 180° towards the back and is slid into the continuous 8 mm thick VM ZINC®

attachment strips which have been previously nailed to the supporting structure (Fig

A).

For cladding higher than 4 m, we recommend cutting the strips and installing them

with a minimum overlap of 60 mm.

Seaming:

For seaming overlapping sheets the L profile of the upper sheet and the U profile of

the lower sheet should be cut over 40 mm (Fig B).

This makes handling easier and ensures better flatness.

For pitches of over 75° single seaming is preferred.

In order for the joint to be properly closed, two people are needed to do this work:

• thefirst,atthetopofthesheet,supportstheseamerwitharope,

• thesecondpositionsthemachineagainstthewallatthebottom

Number of clips on the facade:

The number of clips and their distribution are determined in the same way as for a

roof pitch (see page 71, Fig. A - below).

OVERLAP OF TRAYS

Fig. A

Fig. B

Standing Seam - FacadeInstallation of the system on facades

UPPER AND LOWER EDGE OF TRAY

VARIATION

As a general rule, the film must be removed from the entire surface at the same

time, immediately following the installation of VM ZINC®.

Exceptions to this rule:

• Roofs: when the roofer still has to walk on it to install flashings.

• Roofs: when people still have to walk on it to do other work such as masonry,

joint filling, rendering walls, installing windows, safety equipment, lighting

equipment, etc.

• Facades: when the cladding is close to the ground and there is still work to be

done around it, etc.

Under no circumstances must the film be left on installed VM ZINC® for more

than a month.

Pre-weathered QUARTZ-ZINC® and ANTHRA-ZINC® are produced using a surface

treatment on Natural VM ZINC®. As with all patinas, this change in the crystalline

structure of both surfaces of the metal evolves with time.

The pre-weathering treatment completed at the plant gradually evolves and

coalesces over time with the naturally formed zinc patina.

To ensure a consistent finish we recommend profiling and installing the

components of a new project using a parent coil.

Moving around on the VM ZINC® during and after installation on the roof

As a general rule, moving around on already installed VM ZINC®, is to be avoided

even if the latter is protected by film.

However, if it is necessary to walk on the zinc, we strongly advise moving around

using specially designed ladders and wearing safety shoes made for slippery surfaces

as Natural VM ZINC®, bilacquered VM ZINC® and pre-weathered VM ZINC® are slippery

whether they are covered by film or not, particularly when they are wet.

In any case, obey the building site safety standards in force and as a minimum

make sure you are always secured by a safety harness.

The VM ZINC® fitted should be protected during peripheral works (rough casting, tuck-

pointing, rendering, etc). However, this protection must allow effective ventilation of

the upper surface of the VM ZINC®.

Removing the protective film from pre-weathered zinc

75

76

Standing seam - Appendix 1 Junctions at the base of the pitch

End roof with soldered continuous welting strip


2. sheet clip in VM ZINC®

th = 0.8 mm, w = 80 mm, 2 per m

3. continuous welting strip in VM ZINC®,

soldered


Junctions using an eaves apron strip (used mainly with gutters):



w = 80 mm, 2 per m




w = 250 mm, 2 per m or in galvanised steel,

th = 0.8 mm

L = Flashing length:

- For pitch stronger than 14° L = 70 mm

- For pitch between 3° and 14° L = 120 mm

A = nose of the eaves apron strip

- For trays of standing seam smaller than 7 m

A=B= 30 mm

- For trays longer or egal than 7 m A=B= 50

mm

C = C’ depending of the temperature when

the standing seam is applied

see chapter of the expansion/contraction of

the standing seam.

R = overlap

- Pitch stronger than 14° R=120 mm

- Pitch between 9° and 14° R=150 mm

- Pitch between 3° and 9° R=300 mm

A = B

- For standing seam trays smaller than 7 m

A=B=30 mm

- For standing seam trays longer than 7 m

A=B=50 mm

C = C’ depending of the temperature when the

standing seam is applied.

see chapter about expansion/contraction of

standing seam

A’=20 mm minimum

The solutions shown here are examples and are not the only ones possible.

Our technical department is available to analyse alternatives with you.

VERGE FASICA A-B

77

Standing seam - Appendix 2 Verge flashing

VM ZINC® verge fascia for curved roof

Junction:

detail with saddle piece (Fig. A)

detail with welted panels (Fig. B)

1. Clip in VM ZINC®

th = 0.7 mm, w = 50 mm

Verge detail with VM ZINC® fascia board

1. Roof boarding

2. Fascia board

3. Tray folded to form vertical profile


w = 250 mm, 2 per m


6. VM ZINC® fascia piece, th = 0.8 mm

7. VM ZINC® capping piece, th = 0.8 mm

Pitch ≥ 14° H min. = 35 mm

Pitch ≤ 14° H min. = 55 mm

The solutions shown here are examples and are not the only ones possible.

Our technical department is available to analyse alternatives with you.

78

Standing seam - Appendix 3 and 4 Flashings and forbidden contacts

Appendix 4: Forbidden Contacts

Direct contact with products such as fresh concrete, plaster, bitumen, mortar and

structures containing substances that are aggressive towards VM ZINC®.

Contact with metals such as copper, unprotected or ungalvanised iron, natural lead is

forbidden.

Only galvanised steel, natural lead protected by a patinating oil, FLEXUM® lacquered

lead, aluminium and austenitic stainless steel can come in contact with VM ZINC®.

Heating oil soot resulting from imperfect combustion landing on the zinc causes

irreparable damage. Regular maintenance of furnace burners and the use of fuel that

meets standards prevent this damage.

Using chimney “caps” may lead to aggressive deposits on the VM ZINC®.

Use of an uncovered finishing cone is therefore recommended for fuel oil heating

chimneys.

IMPORTANT: Box gutters, gutters, eaves apron strips, surrounds of windows set in

the roof and chimney surrounds must be installed before the panels are fixed.

Verge and ridge cap flashing is installed after the panels are fixed.

Appendix 3: Flashings

Arch. D. Wauters- QUARTZ-ZINC®>

79

Standing seam - Appendix 5 Ventilation of VM ZINC® - Roofing and cladding

Contact with the outside air provides the

CO2 required to form the natural patina of

VM ZINC®.

Without the presence of outside air

VM ZINC® does not protect itself and if

there is any condensation, a chemical

reaction can occur. As a result there can

be corrosion on the underside of the

VM ZINC® which is not visible until holes

appear on the outer skin.

Therefore, to ensure the durability of

VM ZINC® fixed on roof boarding its

underside must be ventilated.

The best ventilation is ensured by two

continuous air inlets: one at the bottom

and the other at the top of the roof pitch

or cladding.

For installation on roof boarding, the

underside of the latter and thus the

underside of the VM ZINC® will be

ventilated.

If it is impossible to realise this type

of ventilation, it must be replaced by

another air inlet system such as roof

ventilators (pitches > 21°) or air vents.

These air inlets are to be carefully spaced

to ensure that the entire underside of

the metal is ventilated.

Fixing fine mesh (< 2 mm) to all the air

inlets will deter insects, rodents and birds

from entering.

The minimum depth of the air space

under the roof boarding must be 40 mm.

The total area of the air inlets (eaves and

ridge) is 1/1,000th of the surface area of

the roof, with a minimum width of

10 mm in the case of continuous

ventilation.

In general we advise planning a total

area for ventilation at the ridge that is

1.5 times greater than at the base of

the roof. For pitches greater than 13 m

long, intermediate air inlets should be

planned for.

In most cases, a layer of insulating

material is placed below the ventilated

space. In order to avoid the risk of

poorly installed insulation obstructing

the air space, or of the insulation getting

wet as the result of condensation, a

breather membrane is required on the

top side of the insulation. This breather

membrane must be vapour permeable

and end in the gutter, the box gutter or

on the outside of the building.

This breather membrane can also

prevent convection currents of (cold)

outside air entering the building.

Given the increasing level of insu-

lation in buildings, the installation

of an effective vapour control layer

on the warm side of the insulation is

required.

The use of “PLUS” type VM ZINC® the

underside of which has already been

protected during production, means

that installation can be done without

ventilation of the underside as shown

on pages 18, 28, 38 and 48.

(Natural VM ZINC® PLUS, QUARTZ-ZINC®

PLUS or ANTHRA-ZINC® PLUS, PIGMENTO®:

red, green, blue).

Developer: Berkeley Homes - QUARTZ-ZINC®>

80

1. VM ZINC® on a wooden load bearing structure

1.1. Wood varieties that may or may not be placed in contact with VM ZINC®

Standing seam - Appendix 6Compatibility of VM ZINC® with wood, wood derivatives, glues and mastics

Compatible varieties Incompatible varieties

Fir (red or white) Larch

Spruce Oak

Pine Chestnut

Poplar Red or white cedar

Douglas pine

All wood varieties with a pH < 5

The compatibility of the wood with VM ZINC® must be analysed before specifying and installing.

1.2. Compatibility of wood treatment products with VM ZINC®

If the wood is treated, the compatibility of the treatment products with VM ZINC® must be checked

(see table below).

Indicative table of wood treatment products*

Type of treatment ComponentsCompatibility with

VM ZINC® Class

Non-fixing metal salts Single component salts used in water (fluorine, boron or copper)

NO C1

Metal fixing saltsComplex metal salts containing chromium to

fix the active metals (CCA, CCB)Study in progress

(consult manufacturer)C1 to C5

Organic products Contain oil solvents YES C1 to C3

EmulsionsUse water as a vehicle combined with non-

hydrosoluble synthetic substancesYES C1 to C2

Combined productsCombined metal compounds (copper and

boron) with synthetic moleculesTo be determined

(consult manufacturer)C1 to C4

CreosoteCompound of active substances produced

from hard coal distillationTo be determined

(consult manufacturer)C4

* always refer to the manufacturer’s notice for the product used.

81

1.3. Compatibility of glues and mastics with VM ZINC®

If less traditional decking is used (e.g. wood panels), the compatibility of all the decking’s components

(e.g. glues) with VM ZINC® should be checked, and, if applicable, the possibility of ventilating the under-surface

of the VM ZINC® (see table below).

Indicative table of glues and mastics*

Compatible products Incompatible products

Polyurethanes Acetic silicones

Non-acetic silicones Acid epoxides

MS Polymers Ureas/melanin/phenol-formaldehyde (wood or panel glue)

Acrylics (depending on the reagent used)

2. Use of wood above VM ZINC®

Incompatible wood varieties may not be used above VM ZINC® elements (e.g. weather-boarding with incompatible

boards or panels above the VM ZINC®). Incompatible timber wash, treatment products or tanic acids will quickly attack

the zinc and cause the formation of unattractive stains.

* always refer to the manufacturer’s notice.

82

Subject

This document is intended for specifiers (building project architects and design teams)

and users (companies responsible for installation on the building site) of the designated product or system.

Its purpose is to provide the main information, text and diagrams, relating to specification and installation (including supporting structures) and flashing installation.

Any use or specification outside the area of use and/or specifications contained in this manual requires specific consultation with the Umicore technical departments. This does not commit the

latter to any responsibility with regard to the feasibility of the design or implementation of these projects.

Countries of application

This document applies exclusively to the specification and installation of the designated products or systems on building sites in United Kingdom and the Republic of Ireland.

Qualifications and reference documents

Please note that the correct use of this manual requires knowledge of VM ZINC® materials and of the zinc-roofing profession.

While construction is underway all standards in force must be respected, including:

• BritishStandardCodeofPracticeforcontrolofcondensationinbuildings,BS5250:2002.

• CalculationprocedureinBSENISO13788:2001.

• BS5250:2002:Codeofpracticeforcontrolofcondensationinbuildings.

• BS5427:Part1:1996:Codeofpracticefortheuseofprofiledsheetforroofandwallcladdingonbuildings.

• BS6229:1982:Flatroofswithcontinuouslysupportedcoverings.Codeofpractice.

• BS6399Part2:1997:Loadingforbuildings.Codeofpracticeforwindloads.

• BSEN501:Roofingproductsfrommetalsheet.Specificationsforfullysupportedroofingproductsofzincsheet.

• BSEN988:Zincandzincalloys.Specificationforrolledflatproductsforbuilding.

• BSEN12056:Part3:2000:Gravitydrainagesystemsinsidebuildings.Roofdrainage,layoutandcalculation.

• BSENISO13788:Hygrothermalperformanceofbuildingcomponentsandbuildingelements.Internalsurfacetemperaturetoavoidcriticalsurfacehumidityandinterstitialcondensation.

Calculation methods.

• CP143:Part5:1964Zinc:Codeofpracticeforsheetroofandwallcoverings.Zinc.

Furthermore, Umicore offers training courses specifically for professionals.

Responsibility

The specification and installation of VM ZINC® products manufactured by Umicore are the sole responsibility of the architects and building professionals who must ensure these products are used in

a way suited to the end purpose of the construction and that they are compatible with other products and techniques used.

The specification and installation of the products implies respecting the standards in force and the manufacturer’s recommendations. In this regard, Umicore publishes and regularly updates

specification and installation manuals for specific geographic areas and provides training courses. All the information on the latter can be obtained from the local VM ZINC team.

Unless otherwise agreed in writing, Umicore cannot be held responsible for any damages resulting from a specification or installation that does not respect all of Umicore’s specifications and the

above standards and practices.

Umicore Marketing Services U.K. Four Rivers House,

Fentiman Walk Hertford, Herts, SG14 1DB

( 01992 822288, 01992 584460

: www.vmzinc.co.uk

: www.vmzinc.ie

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