Caltech - Alumasc Roofing Systems€¦ · Product data 67 57. Caltech ... (light or dark grey) 1 coat @ 0.75 l/m2 1 coat @ 1.0 l/m2 2 coats @ 0.63 l/m2 (1 in dark grey, 1 in light

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Caltech Cold-applied Liquid Membranes

A versatile range of cold‑applied, liquid roofing membranes that offer a fully adhered, durable yet flexible monolithic waterproofing solution with excellent resistance to puncture, abrasion and chemical agents.

Caltech systems can be applied to flat roofs, communal walkways and balconies, and existing profiled sheet roofs.

+44 (0) 1744 648400 56

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Contents

Introduction 58

System benefits, warranties and approvals

59

System selector 60

Caltech Roofing System 61

Caltech Walkway System 62

Acrytite pitched roof coating 63

Application details 64

Product data 67

www.alumascroofing.co.uk 57

CaltechCold‑applied Liquid Membranes

Caltech waterproofing systems offer specifiers and installers a versatile range of cold‑applied waterproofing solutions for flat roofs, walkways and existing low‑pitched sheet roofs.

Suited to both refurbishment and new build applications, Caltech flame‑free solutions ensure the integrity of the waterproofing is maintained whilst opening up opportunities for time and cost efficiencies.

The Caltech range offers a choice of application methods and UV stable finishes, including anti‑slip surfacing, that suit all project and site safety requirements.

Caltech Roofing System – a cold‑applied, flame‑free polyurethane flat roof waterproofing solution with an optional anti‑slip finish.

Caltech Walkway System – a fast‑curing, cold‑applied, hard‑wearing resin based waterproofing system for use on communal walkways and balconies.

Acrytite – a cold‑applied, joint‑free alkyd/acrylic waterproofing protection for the overcoating of existing structurally sound low‑pitched roofs.

+44 (0) 1744 648400 58

Cold-applied Liquid MembranesCaltech

System Benefits

Durable, Flexible SystemsCaltech systems are designed for simple, flame‑free installation and are fully adaptable to both new build and refurbishment applications. With high elasticity and pliability, the membranes perform in the harshest conditions, with excellent resistance to puncture, UV degradation and chemical agents.

Fire PerformanceThe Caltech Roofing system is tested to BS 476: Part 3 and is unrestricted in use under the current Building Regulations.

Flame-free Installation Caltech systems are particularly suitable for sensitive detailing and high risk environments. They offer consistent technical performance across a variety of installation methods to best suit project requirements. All Caltech systems are flame‑free and provide long‑term hard‑wearing waterproofing solutions for flat or low pitched roofs, and communal walkways and balconies.

Caltech Registered InstallersThe Caltech range is only supplied to registered contractors, whose contracts managers and operatives must undergo a stringent Alumasc training programme prior to obtaining registered status. Quality of workmanship is monitored on site on an ongoing basis to ensure compliance with the warranty.

Alumasc Warranty

Caltech systems carry a range of warranties, covering design, product and installation.

Alumasc warranties are supported by public and product liability insurances with a total indemnity limit of £50 million. Third party insurance backing giving cover against latent product defects is available via Prudential Regulation Authority (PRA) regulated insurance brokers subject to independent final inspection, documented compliance with an agreed maintenance schedule and pre‑payment of the relevant premium.

Approvals

British Board of Agrément ApprovedCaltech Roofing – BBA certificate 13/5038.

Quality Independently assessed to the ISO 9001: 2008 Quality Management Standard.

Caltech scores highly in BREEAM ratings (notably in Section MAT5 for responsible sourcing of materials) and contributes to a very good generic rating in the BRE’s Green Guide to Specification, capable of an ‘A+’ rating when installed on timber or metal decks.


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Caltech 15 Year Warranty System



Caltech 30 or 50 Mesh Minerals (for optional anti-slip finish)

0.33* kg/m2 of mineral, plus 0.25 l/m2 of top coat

(*up to 1kg/m2 for maintenance areas)





Caltech Top Coat(light or dark grey)

1 coat @ 0.75 l/m2 1 coat @ 1.0 l/m2 2 coats @ 0.63 l/m2

(1 in dark grey, 1 in light grey)

ReinforcementRF100

glass fibre reinforcementRF100

glass fibre reinforcementRF100

glass fibre reinforcement

Caltech Base Coat (red) 1.0 l/m2 1.25‑1.6 l/m2 1.0 l/m2 1.25‑1.6 l/m2 1.0 l/m2 1.25‑1.6 l/m2

Fibreforce Base Coat with integral chopped fibre

1.0 l/m2 to protrusions and joints only

1.0 l/m2 to protrusions and joints only

1.0 l/m2 to all upstands and details

Primers (substrate dependent)

Caltech Porous Primer, Caltech Metal Primer

or Caltech Epoxy primer





Substrate condition Smooth Rough Smooth Rough Smooth Rough

Caltech HD 15 Year Warranty System

Caltech Standard 10 Year Warranty System

Caltech UV Sealer 4‑5 l/m2 4‑5 l/m2

Caltech Walkway Minerals (30 Mesh)

1.0 kg/m2 1.0 kg/m2

Caltech Aggregate Binder 0.5 l/m2 n/a

Caltech RF100 Reinforcement

100 g/m2 n/a

Caltech Walkway Base Coat 1.0 l/m2 1.0 l/m2

Caltech Walkway Primer 0.1‑0.125 l/m2 0.1‑0.125 l/m2

Caltech Roofing System Selector

Caltech Walkway System Selector

Note: See Caltech Product Data section for insulation and vapour control layer options.

Note: See Caltech Product Data table for insulation and vapour control layer options, and separate Product Data Sheets for full product descriptions.

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Caltech Roofing System

The Caltech cold‑applied liquid waterproofing system provides a seamless elastomeric membrane over rigid flat or tapered insulation. It ensures long‑term waterproof integrity and thermal values in accordance with current regulations.

Caltech has a smooth light or dark grey mid‑sheen finish. Aluminium oxide grit granules can be incorporated within an additional layer of Caltech top coat to form an anti‑slip surface where required, and systems can be tailored to suit specific guarantee and surface finish requirements. Existing roofs can be refurbished using directly applied Caltech, incorporating additional insulation where required.

Key Features

WarrantyThe typical warranty period for the Caltech Roofing System is 25 years.

LifespanCaltech is a high performance membrane which is BBA certified – Cert No. 13/5038. According to the BBA, ‘under normal service conditions the membrane will provide a durable roof waterproofing with a service life of up to 25 years’.

DurabilityCaltech is reinforced with a chopped strand emulsion‑bound fibreglass fabric to ensure excellent mechanical properties and dimensional stability, maximising durability.

PerformanceCaltech is a cold‑applied liquid polyurethane, with a high solids content, providing a seamless durable waterproof membrane over rigid PIR thermal insulation (tapered to falls or uniform thickness) to achieve thermal values and drainage falls in accordance with current Building Regulations and Codes of Practice.

Fire RatingCaltech carries an EXT.F.AA rating to BS 476: Part 3, and the use of the system is unrestricted under the current Building Regulations.

Caltech Top CoatOptional anti‑slip oxide grit

RF100 ReinforcementGlass fibre fabric

Caltech Base Coat

Caltech Preparation layerSelf‑adhesive underlay

Alumasc PIR InsulationFoil faced rigid urethane

Euroroof Vapour Control LayerTorch‑applied, thermo‑adhesive or self‑adhesive

Alumasc Bitumen PrimerOther options available


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Caltech Walkway System

The Caltech Walkway System is a seamless waterproofing membrane comprising a two part primer and top coat, finished with aluminium oxide grit, bound in a UV stable sealer coat. Standard and heavy duty (HD) versions are available, which are typically used on existing asphalt surfaces or new (fully cured) concrete.

The Caltech Walkway System has a high‑gloss, slip‑resistant, low‑textured finish and is available in a standard black, with other colours available to order.

The system is specifically intended for use on medium to high wear areas on communal walkways and balconies, access and escape routes in social housing blocks, hotels and hospitals, access areas in car parks etc.

Key Features

WarrantyThe typical warranty period for the Caltech HD Walkway System is 15 years. The Caltech Standard Walkway System is the subject of a 10 year warranty.

DurabilityThe Caltech Walkway System offers a long‑term waterproofing solution. Medium to high trafficked areas are well protected from future damage and potential costly repairs.

PerformanceThe Caltech Walkway System is fast‑curing and walkable after 3‑4 hours, and therefore suitable for application in areas where access cannot be restricted for more than a few hours, especially advantageous on occupied residential projects.

Caltech Walkway UV SealerUV stable sealer coat

Caltech Walkway Minerals30 mesh aluminium oxide mineral

Caltech Aggregate Binder(HD system only)

RF100 ReinforcementGlass fibre fabric (HD system only)

Caltech Walkway Base Coat

Caltech Walkway Primer

Concrete Deck

+44 (0) 1744 648400 62

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Acrytite Pitched Roof Coating

Acrytite is an alkyd/acrylic roller‑applied seamless waterproofing coating. It comprises a single part primer, base coat and top coat, available in a range of UV stable colours.

Acrytite is formulated to act as a flexible, joint‑free waterproof coating for the refurbishment of existing structurally sound low‑pitched sheet roofs.

Acrytite has a plain colour, low sheen finish.

Key Features

LifespanApplication of Acrytite will typically provide up to 10 years’ waterproofing integrity to existing roofs.

PerformanceThe system is simple to install and quickly resistant to rainfall.

Application AreasSuitable for the refurbishment of asbestos and fibre cement sheeting, profiled metal sheets, PVC and PVF2 coated metal etc., subject to a site survey to establish compatibility and preparation requirements.



Application Details

Upstand with Coping

1 Concrete coping and cavity closer

2 Cavity tray

3 Derbitech HD sealant

4 Alumasc Termination Bar

5 Caltech Top Coat

6 Caltech RF100 reinforcement

7 Caltech Base Coat

8 Caltech Preparation Layer

9 Alumasc PIR insulation

10 Euroroof vapour control layer

11 Primed substrate

Upstand with GRP Trim and Check Curb

1 Alumasc GRP trim

2 Treated timber packer

3 Caltech Top Coat


5 Caltech Base Coat




9 Primed substrate

1

2

3

4

5

3

7

5

6

4

8

6

10

8

11

9

9

7

1

2

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Refurbishment Outlet

1 ProLINER refurbishment outlet

2 ProLINER sealant

3 Treated timber packer

4 Existing roof outlet

5 Caltech Top Coat


7 Caltech Base Coat

8 Existing roofing

9 Existing insulation

10 Existing structural deck

Modular Rooflight Curb

1 Alumasc modular rooflight

2 Caltech Top Coat


4 Caltech Base Coat




8 Primed substrate

2

1

1

2

5

4

4

3

3

6 7

5

9

7

10

8

8

6


Application Details

1

3

2

Upstand with Aluminium Coping

1 Alumasc Skyline aluminium coping

2 Cavity closer

3 Caltech Top Coat


5 Caltech Base Coat




9 Primed substrate

1

2

3

4

5

6

4

5

6

7

8

9

9

10

7

8

Cold Pipe Penetration

1 Cold pipe

2 Weathering cowl

3 Retaining clip

4 Caltech Top Coat


6 Caltech Base Coat




10 Primed substrate

+44 (0) 1744 648400 66


Product Data – Caltech Walkway System

Product Data – Caltech Roofing System

Product Characteristic Description Application Method Size Thickness or Coverage

Membrane

Caltech Minerals30 or 50 mesh aluminium oxide grit

Optional anti‑slip surfaceEvenly broadcast into additional top coat (0.25l/m2)

25 kg 0.33 kg/m2

Caltech Top CoatElastomeric polyurethane

Light or dark grey top coat Brush or roller 12.5 litre15 yr: 1 x 0.75 l/m2 20 yr: 1 x 1.0 l/m2 25 yr: 2 x 0.63 l/m2

Caltech Reinforcement Layer

Emulsion‑bound glass fibre

Membrane reinforcement Loose laid into base coat 1 .0 x 100mRF100 ‑ 100 g/m2 RF225 ‑ 225 g/m2

Caltech Base CoatElastomeric polyurethane

Red base coat Brush or roller 12.5 litre 1.0‑1.6 l/m2

Caltech FibreforcePre‑reinforced elastomeric polyurethane

For details and protrusions Brush or roller 12.5 litre 1.0‑1.25 l/m2

Preparation Layer

Caltech Preparation Layer

Aluminium faced membrane

Self‑adhesive underlay Self‑adhesive 40 x 1.08m 0.6mm

Insulation

Alumasc PIR FF Foil faced For self‑adhesive underlays PU or thermo‑adhered1200 x 2400mm

Various

Vapour Control Layers

Euroroof Self‑Adhesive

Aluminium/glass reinforced vapour barrier

Flame‑free vapour barrier, to receive insulation in PU adhesive

Self‑adhesive 15.0 x 1.1m 2mm

Euroroof Thermo‑Adhesive

Aluminium/glass reinforced vapour barrier

Surface heated vapour barrier to receive insulation

Heat activation by gas torch

10 x 1.0m 2mm

Euroroof TorchtiteAluminium/Woven glass reinforced vapour barrier

Torch‑applied vapour barrier to receive insulation in PU adhesive

Torch‑applied 10 x 1.0m 3mm

Primers

Caltech Porous Primer

Polyurethane resinFor concrete, bituminous and timber to receive Caltech

Brush or roller 5 litre approx 25‑50m2

Caltech Metal Primer

Metallic basedFor weathered, non‑rusted metal, & 'live' bituminous surfaces to receive Caltech

Brush or roller 5 litre approx 70m2

Caltech Epoxy Primer

Epoxy basedPrime corroded, hand prepared metal to receive Caltech

Brush or roller 4 litre approx 20m2

Alumasc Bitumen Primer

Bitumen based Primer for vapour control layer

Brush or roller 25 litre 150‑250m2

Euroroof ZK Primer

Solvent based Primer for vapour control layer

Brush or roller 25 kg 125‑250m2

Product Characteristic Description Application Method Size Thickness or Coverage

Caltech Walkway UV Sealer

Clear or solid colour two part polyurea

UV stable sealer Brush or roller 2 litre 0.2‑0.25 l/m2

Caltech Walkway Minerals

30 mesh aluminium oxide grit

Anti‑slip surfacing

Evenly broadcast into aggregate binder (HD system) or base coat (Standard system)

25 kg 1.0 kg/m2

Caltech Aggregate Binder

Two part polyurethane

Binder for walkway minerals (HD system only)

Brush or roller 5 litre 0.5 l/m2

Caltech RF100 Reinforcement Layer

Emulsion‑bound glass fibre

Membrane reinforcement (HD system only)

Loose laid into base coat 1.0 x 100m 100 g/m2

Caltech Walkway Base Coat

Two part polyurethane

Embedment coat to receive reinforcement (HD system) or walkway minerals (Standard system)

Brush or roller 4.5 litre 1.0 l/m2

Caltech Walkway Primer

Polyurethane Substrate primer Brush or roller 5 litre 0.1‑0.125 l/m2

Note: Coverage rates are variable depending on prevailing conditions.

Note: Coverage rates are variable depending on prevailing conditions.


Documents

Caltech - Alumasc Roofing Systems€¦ · Product data 67 57. Caltech ... (light or dark grey) 1 coat @ 0.75 l/m2 1 coat @ 1.0 l/m2 2 coats @ 0.63 l/m2 (1 in dark grey, 1 in light