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Egger OSB 4 TOP
Delivering excellent results.
Application areas 5Reference property, a family home 6
EGGER OSB 4 TOP in the wall 8
EGGER OSB 4 TOP in the roof 8
EGGER OSB 4 TOP in the ceiling 10
EGGER OSB 4 TOP as dry screed 10
Product advantages 133-in-1 function 14
Floor-to-ceiling format 14
CE declaration of performance 14
Edge stability 15
Optimised tongue and groove profile 15
Fire protection 15
Installation and processing 17General 18
EGGER OSB 4 TOP in the wall 20
EGGER OSB 4 TOP in the roof 21
EGGER OSB 4 TOP in the ceiling 24
EGGER OSB 4 TOP as dry screed 26
Material moisture 28
Surface coating 30
Statics and structural physics 33Fastening 34
Pre-dimensioning 36
Weight bearing capacity 42
Fire resistance 43
Material properties 44
Handling 47Storage and packaging 48
Waste handling 48
Service and quality 51Service 52
Delivery programme 53
Quality 54
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Contents
11Application areas
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1 Application areasYou have the need, we have the product.
The OSB 4 TOP board is the ideal material for all structural applications for new construction, refurbishment and renovation work. OSB 4 TOP boards are synthetic resin-bonded, three-layered wood-based panels made of scattered micro-veneers (strands).
EGGER OSB 4 TOP is exclusively produced using fresh, debarked logs from local, sustainably managed forests. The total wood amount used in production is coniferous, predominantly pine and spruce. The special preparation and alignment of the strands in the grain direction in the top layers ensure the best technical properties. Structural jobs such as new construction, rehabilitation and renovation, where panels should be used to transfer loads, to produce fire protection designs or effective layers in terms of building physics, can be implemented permanently and sustainably with OSB 4 TOP boards.
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Application areas
Sustainability, ecology and energy efficiency – all in a family home.
The family home in the Tyrolean mountains benefits from the versatile and successful use of wood as a building material. Together with Holzbau Saurer, a wood construction company, the concept was implemented in just 8-months on a living area of 476 m², paying particular attention to modern and contemporary architecture.
Ceiling elements with the OSB 4 TOP board in the maximum format of
were installed.
The two storeys were built as a timber frame construction both in the wall and ceiling area. A special feature is the OSB 4 TOP board in the maximum format of 11.50 × 2.80 m in the prefabricated ceiling.
The high static strength values were exploited very well when it came to gluing them with the structural timber, especially on the canopy. The high-quality surface of OSB 4 TOP was also impressive.
11.50 × 2.80 m
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Application areas
1.
2.
The applications of the OSB 4 TOP board
For roof construction, the OSB 4 TOP board is often used to clad the rafters on the inside and therefore fulfils the same task when used on an exterior wall. Thanks to their high bending stiffness, it is no problem to use heavier insulating materials like cellulose between the rafters on normal rafter intervals from a board thickness of 12 mm. The boards are also suitable for the outside of flat or slightly inclined roofs as load-transferring panelling. In this case they are used in ventilated, double-skin roofs as load-bearing roof formwork / roof boarding for the waterproofing / sealing or for metal cladding on separating layers.
EGGER OSB 4 TOP in the wall
EGGER OSB 4 TOP in the roof
Exterior wall OSB 4 TOP boards can be used in timber frame construction as interior and exterior planking on the framework. As interior planking, OSB 4 TOP boards can also be reliably used as an air-tight level and vapour barrier. Here they support the timber frame construction with their high bracing capacity. The good statical and physical properties, which are clearly regulated with the CE declaration of performance, enable safe and permanent wall designs to be planned and constructed.
Interior Wall High stability, quick assembly and no special plugs required are typical of interior and exterior walls with OSB 4 TOP boards. Walls for the widest range of requirements can be designed on their own or combined with gypsum plasterboard or fibreboard panels. Walls with classified / proofed fire resistance and walls with increased noise insulation requirements are also possible with OSB 4 TOP.
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You will find detailed information on Page 20.
EGGER OSB 4 TOP in the wall1.→
You will find detailed information on Page 21.
EGGER OSB 4 TOP in the roof2.→
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Thanks to its high load-bearing capacity, OSB 4 TOP is considered to be optimal for structural flooring. With up to 40 % better static values, the board provides high performance panelling beam ceilings and the bracing capacity strengthen the stiffening of the building. It has good strength properties compared to OSB 3 boards or particleboards, which enables the panel thickness to be reduced by 3 to 5 mm or alternatively to increase the span width. The accurately fitting tongue and groove profile helps to fast and easy produce an even surface for subsequent work steps.
OSB 4 TOP board can also be processed as a stable dry screed. It is possible to lay it directly on impact-noise insulation or on wooden substructure.
The following properties make the boards an economical dry screed:
• high resistance to point loads• precision-fit production of the boards• high edge straightness• high squareness of the boards
If no other floor covering is planned, the light and closed surface of the OSB 4 TOP tongue and groove board, combined with a coating, forms an attractive floor area in living and utility rooms.
Application areas
3.
4.
The applications of OSB 4 TOP board
EGGER OSB 4 TOP in Flooring
EGGER OSB 4 TOP as dry screed
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You will find detailed information on Page 24.
EGGER OSB 4 TOP in the ceiling3.→
You will find detailed information on Page 26.
EGGER OSB 4 TOP as dry screed4.→
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Product advantages
2 Product advantages The board withstands a lot, and also lives up to its promises.
And OSB 4 TOP board promises a lot: Airtightness, vapour retarder, stiffening, edge straightness and a highly durable tongue and groove profile. How can OSB 4 TOP keep these promises? By the fact that all the necessary values are above the requirements of the standards. Furthermore, it can also be used as contributive protective planking / covering in all timber constructions in accordance with fire protection dimensioning according EN 1995-1-2. So you can rely on OSB 4 TOP for any building project.
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In a single process OSB 4 TOP creates building airtightness, installs a vapour retarder and bracing. The boards impress with a diffusion resistance factor of 200 and a surface airtightness of < 0.12 m³/m² × h. As a result, no additional layers are necessary in preferably vapour permeable structures that are often advantageous these days. This saves material, working time and ensures the highest processing safety due to simple assembly procedures.
3-in-1 function
Compared to standard OSB boards, OSB 4 TOP safely and reliably fulfils the high static and structural requirements of wood construction. In addition to stiffening and vapour barriers, we are the only manufacturer who also
The variety of formats of the storey-high OSB 4 TOP boards with a length of 2,500, 2,650, 2,800 or 3,000 mm ensures maximum flexible during fabrication. An important advantage when using storey-high formats is the possibility of installation without horizontal panel
CE Declaration of Performance
Storey-high formats
One board – three important functions:
1. Airtightness 2. Vapour retarder 3. Bracing
joints. Less panel joints, less sealer tapes are needed. That safe material and speeds up processing. In combination with the vapour-permeabel DHF boards as outside sheathing prefabrication of wall elements and fast assembly on the construction site is easily achieved.
guarantees airtightness – certified with a CE Declaration of Performance. This means traceability confidence during planning and provides the basis of sturdy constructions.
You can find the CE declaration of performance here:www.egger.com/osb4top
→
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Product advantages
The OSB 4 TOP board is produced with a guaranteed high raw density. Due to the special production process it has a visibly and tangibly higher edge stability than other boards. There is a low risk for
break-out if nails,srews or staples are set sharp to the edge. This means that OSB 4 TOP boards can also be securely fastened on the substructure around the edges as usual for bracing elements.
OSB 4 TOP boards are produced with a guaranteed characteristic raw density of more than 600 kg/m³. They can therefore be used as contributive panelling in timber constructions according EN 1995-1-2 with advantages because of the low burning rate. In addtion there are classifications reports for several constructions
Edge strength
Fire protection
Due to the high compression of the middle layer, the OSB 4 TOP board has a stable and highly durable tongue and groove profile. This can withstand the harshest building site conditions. The asymmetric, conical tongue and groove profile ensures precise-fitting and quick installation. It creates a positive-locking connection and an even surface. The profile improves the
transfer of forces on ceiling panelling used as bracing element. Installing the last board next to the adjacent wall area is also simple. The board is fitted diagonally into the groove. Performance tests according to EN 12871 have shown that tongue and groove panels can be used for point loads up to 7.0 KN depending on the panel thickness and loading condition.
Optimised tongue and groove profile
according EN 13501 available. With a board thickness of 30 mm, OSB 4 TOP boards provide a fire resistance of more than 30 minutes and at the same time achieve a fire protection encapsulation class of K₂30 according to EN 13501-1. Even with fire protection requirements, visible cladding made of OSB 4 TOP boards is therefore possible.
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Installation and processing
Installation and processingYou build.We will take care of the details.
3And when it comes to planning and executing building projects, there are a lot of details to be observed. Especially because OSB 4 TOP is so versatile, it can be used in walls, roofs, ceilings and dry screed. You will find everything about expansion joints, saws, sealing, material moisture, surface coating and a bit more besides on the following pages.
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The basic rules for processing wood-based materials in the roof, wall and floor are provided by DIN CEN/TR 12872:2015. When being used as load-bearing, bracing panel according to EN 1995-1-1, the rules about preventive structural wood preservation e.g. DIN 68800 must be observed.
Panel boards made of wood-based materials are considered to be airtight according to EN 13986. Establishing airtightness on board joints, penetrations and component connections should be done with suitable standard adhesive tapes on a dry board surface free of dust and grease. As regards the suitability and permanence of adhesive tapes, tests have been carried out with industrial partners like SIGA, Ampack and proclima and recommendations have been developed.
Tongue and groove joints are not airtight without masking with sealer tapes. Gluing the tongue and groove connection as a way of establishing airtightness is not to be recommended, as, on the one hand, a direct visual inspection for flaws is barely possible. On the other hand, this makes the overall panelling area very rigid, which can lead to unwanted stresses, cracks or deformations due to climate fluctuations.
GeneralExpansion jointsExpansion joints between single panels or to walls and adjacent elements are to be planned according to the anticipated change in length caused by the climate. For edge lengths > 10 m, additional expansion joints from 10 to 15 mm are to be arranged within the component area. The design of expansion joints of up to 2 mm between individual boards is already taken into account when producing the board dimensions at the factory. For planning expansion joints, a possible change in length of 0.03 % per 1 % of material moisture change is to be taken into account.
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Incoming goods inspectionBefore installation, the following should be checked and compared with the planning specifications:• Type of board and service class• Board thickness• CE certification and declaration of performance
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Sawing– Drilling – MillingThe OSB 4 TOP board can be machined like solid wood with the right electrical and hand tools. Fitting the cutting tools with hard metal is recommended. During the use of manually guided power tools without dust extraction by suction a breathing mask should be used. Make sure to select a slightly lower feed rate.
For a good cross-section on visible boards, the following should be noted:
• Sharp tools• Vibration-free workpiece feed• Correct blade protrusion
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Installation and processing
Difficult to saw?
No way!19
According to DIN EN 1995-1-1 a maximum of one horizontal joint in the bracing panel is allowed if the edges in the joint area are connected rigidly into the framework. It is therefore recommended to design the wall without a horizontal joint using the storey-high formats measuring 2,500, 2,650, 2,800 or 3,000 mm.
Weather protection and façadeDirect Plastering on OSB 4 TOP is not recommended. Plastering can be done by using plaster base plates or thermal insulation composites. With a thermal insulation composites, a part of the thermal insulation thickness from the construction compartment can be laid in the outer skin of the building’s shell. The timber cross-sections can therefore be reduced to the static requirements.
EGGER OSB 4 TOP in the wall
Processing with horizontal joint
Floor-to-ceiling processing
Board joint with airtight sealer tape
(horizontal cross-section)
Airtight connection to the floor panel
(vertical cross-section)
Fastening inside uprights(horizontal cross-section)
The bracing of a wall should be done with storey-high panels without horizontal joints.
Economicalconstruction
method
a
a
b
b
c
c
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Installation and processing
Processing with horizontal joint
Floor-to-ceiling processing
GeneralOSB 4 TOP are used in the roof as• interior cladding or planking on the rafters• load-bearing roof-formwork or a substructure
for metal cladding or flat roof waterproofing.
The boards used as load-bearing roof-formwork or a substructure must meet service class 2 (SC2) according to DIN EN 1995-1-1.
The requirements of EN 335 and further standards for wood preservation in construction have to be met. Careful planning and professional implementation with regard to thermal insulation and moisture protection is essential especially in case of flat roof and metal roof designs. To ensure a long service life on slightly inclined roofs ( > 5°) and roofs with metal cladding or flat roofs with waterproofing, the moisture management must also be observed across the whole construction and utilisation period.
EGGER OSB 4 TOP in the roof
Planning and executing roofs• Room-side, vapour sealing airtightness layer
with sd ≥ 3.0 m, e.g. OSB 4 TOP board ≥ 12 mm board thickness
• Load-bearing roof boarding for flat roof waterproofing or metal cladding with OSB 4 TOP board ≥ 22 mm board thickness
• Vapour permeable underlay with sd ≤ 0.3 m, e.g. 15 mm DHF board
• Free minimum ventilation cross-section above the underlay ≥ 30 mm
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The heat-insulated roof construction must be made permanently airtight.
Due to weather effects and wet building materials, a high level of moisture can unduly get into the roof construction. The surplus moisture must be dissipated before making the structural element airtight on the inside or before attaching the roof membrane. This can be done e.g. by technical drying.
The thermal radiation at night can lead to the materials cooling and to condensation especially on the underside of roof overhangs. This may result in discolouration of the surfaces caused by blue stain and mould. A suitable surface treatment may be planned to protect against this. What is more effective and permanent is to over-insulate the roof formwork to reduce cooling at night.
Additional information about structural physics• The calculated evaporation reserve for the
structural physics certificate must be at least 250 g of water/(m² × year).
• Any permanent or only partial shading of the roof construction by vegetation (trees), neighbouring buildings or structures (attics, solar panels) should be prevented.
• The airtightness of the roof construction including the connections and finishes must be checked. This is particularly recommended in case of penetrations in the roof and connections to other structural elements.
• Due to the buffering capacity in case of moisture, insulating materials made of cellulose (wood fibre insulation/cellulose insulation) should be used.
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As a matter of principle, it is recommended to plan roof constructions as vapour permeable constructions with a covered heat insulating layer and ventilated roof cladding or roof sealing on top of this.
Ventilated layer
EGGER DHF
EGGER OSB
EGGER OSB
Roof membrane Roof membrane with gravel fill
Decking Metal roof
Panelling ready to paint
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Installation and processing
Requirements of substructures for metal cladding Roof formwork made of wood-based panels such as OSB 4 TOP can be used as a supporting substructure for metal cladding made of copper, aluminium, titanium zinc or stainless steel – see rules of the plumbing trade issued by ZVSHK St. Augustin, 2009 and rules and regulations of the Central Association of the German Roofing Trade (ZVDH).
• The metal cladding should be fastened with stainless steel ribbed nails at least 2.5 × 25 mm.
• Using stainless steel sliding clips to fasten the metal bands is recommended.
• The minimum thickness of the OSB 4 TOP boards of 22 mm and the maximum board length of 2,500 mm is to be observed.
• Between the metal sheets and the wood-based panels, a suitable separating layer must be used.
Separating layer with metal cladding• When selecting and using separating layers
with a moisture compensation layer (structured separating layer) between the metal cladding and the substructure, attention is to be paid to the information provided by the metal manufacturer.
• On vertical and highly sloping areas (e.g. façades or dormers) a separating layer with moisture compensation is not necessary, as the water can run off due to the vertical design.
• In case of wall coverings, attics, metal window sills or similar small scale components that are glued with a bituminouis adhesive to the OSB no separating layer is prescribed. Care is to be taken that the OSB 4 TOP boards cannot be made damp from the substructure (e.g. brickwork, concrete etc.), e.g. by being completely masked.
• In case of requirements regarding radiated heat and flying sparks, the suitability of the separating layer may also need to be verified.
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When installing OSB 4 TOP boards used as structural floor, free floating panel joints parallel to the supports are not permitted according to the normative rules of CEN/TR 12872, EN 1995-1-1. Overhang of the boards have to be trimmed back to the center of the joists. Minimum length of a panel is one joist-span. In order to minimise cutting waste, however, the pattern of the substructure should be matched to the available board formats.
When installing boards on existing ceilings with individual wood beams as part of a refurbishment project, a height compensation should be made using suitable measures (e.g. splicing on the sides). This ensures that no detrimental stresses occur due to the deformation of the ceiling planking. The required load-bearing capacity of the beam layer is to be checked as part of the refurbishment design.
EGGER OSB 4 TOP in flooring
Installation as interlocking ceiling panelling:
offset at least 1 field width
When producing ceiling sections, the expansion joint to adjacent structural elements is to be checked using the change in length factor caused by moisture (0.03 % material moisture change) and the room lengths. In any case, an expansion joint of at least 15 mm is to be provided.
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Installation and processing
These can be put to good use. Whether here, here or here.
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EGGER OSB 4 TOP as dry screed
OSB 4 TOP boards are available as flooring boards with 4-sided tongue and groove profile in different thicknesses.
When installing the boards as flooring, it is possible to lay them as a floating floor on an insulating layer or on a substructure of squared timber. Installation for flooring constructions is regulated in DIN CEN/TR 12872 and EN 13810-1.
Installation• The OSB 4 TOP boards are installed interlocked
and almost without cutting waste, especially in the case of a floating installation. Cross joints should be avoided. The board joints should be offset by at least 30 cm.
• With a decorative installation, skirting boards must be fitted in such a way to ensure that the flooring is ventilated. Glued plastic skirting boards are not suitable in this case.
Edge jointsThe installed OSB 4 TOP boards must have a minimum gap of 15 mm to adjacent or penetrating structural elements. If there are pillars in the room, these must be sufficiently cut free. This gap allows the boards to change size without tension and the flooring construction to be ventilated.
ThicknessWhen laying OSB boards as a floating installation, a board thickness of at least 18 mm is to be planned. When installing on joists, the board thickness is based on the anticipated loads and the span width of the substructure. The tables used for the pre-dimensioning of wood beam ceilings in the statics and structural physics chapter give appropriate recommendations.
Installation pattern with low-waste continuous installation
1 2 3 4a
4b 5 6 7 8a
8b 9 10
min. 30 cm
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Installation and processing
Glueing• All tongue and groove connections are to be glued
together to create a force-locking connection. This achieves a consistent bond and possible creaking noises from alternate loading are prevented.
• PVAC glues of grade D3 and D4 are suitable for glueing tongue and groove profiles together.
• Curing must be done for at least 24 hours under pressure and is created by wedges or floor clamps.
• The tensioning wedges must be completely removed after glueing. Otherwise they act as sound bridges on the finished area and the desired noise insulation is not achieved. Furthermore, they impede expansion movements occurring as the result changings of room climate.
Moisture protection• Dry screeds made of wood-based panels should
only be installed in closed buildings after fitting windows and doors.
• The installation of damp building materials as well as plaster, painting and wallpapering work should be completed. Otherwise the resulting high humidity must be dissipated by adequate ventilation or other measures.
• The board moisture during installation should correspond to the subsequent in-service moisture.
• Installing OSB 4 TOP in roomss without a cellar underneath a sufficient heat insulation of the base plate is needed to prevent condensate on the bottom side. Unequal mositure content leeds to warping. When installing on solid ceilings, a moisture barrier must be laid as a matter of principle. PE films, d > 0.2 mm, which overlap on the joints by at least 30 cm and are laid against the wall up to the top edge of the flooring are suitable.
• When installing in rooms without a cellar underneath, care is to be taken that the floor panel has sufficient heat insulation. This prevents the formation of dew on the underside of the boards and hence prevents the floor from warping.
• When using old floor planks as a subfloor, the old nails should be checked first and tightened if necessary. Floor planks rubbing against each other are to be cut free. Attention is to be paid to functional edge joints.
• Care should be taken to use dry wood, u < 15 %, for joists, as shrinkage in the substructure can lead to tensions in the finished area and hence to creaking noises.
• If the final floor covering is not being installed immediately, the boards are to be covered after installation (e.g. with PE film).
The compositions and technical data for various dry screed systems can be found in our construction catalogue.
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Glueing the tongue and groove profile
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Material moistureEquilibrium moisture contentOSB 4 TOP boards absorb a certain amount of humidtiy depending on the relative humidity and temperature of the surrounding air. The figure is around 3 % below the equilibrium moisture of solid wood.
The glueing technology of the production provides an equilibrium moisture similar to the in-service moisture that sets in inside buildings of 8 ± 3 %.
According to DIN CEN/TR 12872:2015, the equilibrium moisture specified in the table can be expected in the in-service condition for wood and OSB boards. The occurrence of condensation is prevented by professional assembly.
Installation conditionsEquilibrium
moisture
Fully centrally heated building
6 to 9 %
Building with part-time central heating
9 to 15 %
Unheated new building
15 to 18 %
30
25
20
15
10
5
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Sorp
tion
moi
stur
e in
per
cen
t by
wei
ght
Relative humidity in %
Sorption moisture in per cent by weight of OSB 4 TOP boards depending on the relative humidity at a temperature of 20°C
Sorption moisture is the humidity absorbed by the material by capillary action and distributed in the structure. At a relative humidity of 85 %, the material equilibrium moisture of OSB 4 TOP
boards is expected to be below 18 % (see diagram). This meets the requirements for usage in service class 2.
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Installation and processing
! Watch out, convection• The amount of condensation water arising as the result of convection can exceed the construction’s
potential for evaporation by a factor of 1,000. • Convection must be ruled out by construction measures (e.g. by adhesive tapes or joint sealing tapes). • Condesed water is not diffusible and a transport by diffusion process is not possible. This leads to an
increase in material moisture, which is detrimental for the construction and building material, and to consequential damage associated with this.
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The OSB 4 TOP board is first and foremost a constructional wood-based material. Its attractive appearance also allows it to be used as a decorative element. However, here the following principles have to be observed:
• Visible, non-load-bearing OSB 4 TOP cladding in the outside area not directly exposed to the weather should be given a suitable protective coat. All standard coating materials suitable for wood in similar applications, such as oils, paints, glazes or waxes, can be used. Compliance with the processing instructions of the coating manufacturer is mandatory.
Surface coating
• Before being coated, the surface must be sanded, free of dust and grease, absorbent and dry. Sanded tongue and groove boards provide a suitable substrate for coatings.
• The butt joints of sanded boards need to be checked for possible height differences and sanded down if necessary.
• Joints or screw holes emerging in sanded floors can be sealed with a mixture of glue and sanding dust or filling compounds suitable for wood and wood-based panels.
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Installation and processing
Parquet flooring and flexible floor coveringsOSB 4 TOP boards are generally well suited for taking elastic and textile floor coverings. An area covered with OSB 4 TOP represents a relatively even subfloor. The risk of occuring of hollow areas with an parquet flooring installation is therefore much lower than with an installation e.g. on cement screed.
When glueing parquet flooring on the boards, as with other wood-based panels, due to the relatively lower absorbing capacity, increased swelling of the wood in the floor covering can be anticipated compared to glueing on screed.
In case of a floating installation under solid parquet flooring, 2 layers made of OSB 4 TOP boards at least 15 mm thick should be glued crosswise over the whole area and screwed together with a distance of approx. 20 - 25 cm in order to increase the resistance of the finished area to warping.
Ceramic floor coverings Wood-based materials are not the ideal substrate for ceramic floor coverings. No guarantee can be given by the manufacturer for optimal results. Instead of being laid on the boards that make up the substructure, the tiles should be laid on an additional floating, cement-bonded bearing layer.
When using directly on the OSB 4 TOP board, the following must be observed:
• Before installing ceramic floor coverings on OSB 4 TOP boards, a foundation that meets the increased requirements is to be made. In this respect, the technical data sheets of the respective material manufacturers are to be observed.
• For the installation of ceramic floor coverings and in case of high point and single loads, the following board thicknesses must be adhered to at least:
≥ 18 mm for application in the wall ≥ 25 mm for application as dry screed
• The surface must be protected from absorbing moisture by an appropriate seal (e.g. paintable waterproofing system, compound seal).
• The tiles must have a smooth reverse side and should not exceed a maximum format of 20 × 20 cm.
• To adjacent structural elements, supports, internal and external corners, the connections are designed as permanently elastic expansion joints.
NoteThe deflection of the substructure and of the OSB 4 TOP boards is to restricted to l/600.
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The OSB 4 TOP boards can be laid as a floating installation and glued with wood types sensitive to swelling pressure (e.g. maple, beech) or parquet flooring dimensions (e.g. 10 mm of solid parquet flooring, 22 mm of strip parquet flooring). It is possible that high swelling pressure (e.g. due to high humidity) occurs. This leads to severe tension on the top side of the parquet flooring area, which can lead to the flooring construction bulging up.
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4432
Statics and structural physics
Statics and building physicsNicely predictable this OSB 4 TOP.
You can work everything out well, especially with the figures, data and facts relating to OSB 4 TOP on the following pages. This makes the pre-dimensioning of roof sections, wall panels and ceiling panelling quite easy. And we also provide a few more pieces of information about fastening and the material properties.
4
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OSB 4 TOP can be fastened with suitable fastening elements such as screws, staples and nails. The crosswise aligned strands and the high middle layer compression ensure that the fastening elements hold firmly in place even sharp to the outer edge of the boards.
In general, the following applies for staples and nails:• official certificate of usability such as approval or
standard (brands like Haubold, Prebena and SFS Intec)
• length of fastening elements: 2.5 × board thickness, at least 50 mm
• staples with wire thickness of at least 1.52 mm• corrosion-resistant, made of galvanised or
stainless steel• when using nails: flat-head nails with radial
groove, screw or ribbed nails
Special features for ceiling or dry screed• Woodscrews or chipboard screws with full
thread are suitable. When screwing without pre-drilling, screwing should be done between the fitter’s feet. The board is thus pressed on the substructure by the person’s weight to prevent burr formation on the underside of the board. The burr formation could lead to creaking later.
• In the case of decorative installation, the sunk screwheads can be filled later.
• Ribbed nails, nails and staples do not have the necessary pull-out resistance. Creaking can occur as a result.
• Screws driven in too deeply may create undesired acoustic bridges.
Fastening
Minimum spacings according to EN 1995-1-1 in wood and the side areas of EGGER OSB 4 TOP for nails dn < 5 mm
* only in exceptional cases when load applied via edge rib without divider (edge rib subject to bending stress), for load-grain angle of 90°
** only reinforcing panelling
amax Distance between in grain direction
amin Distance between in grain direction
a4,c
From the unstressed
edge — Fibre
a4,t*From the stressed
edge — Fibre
Timber 40 × dn 15 × dn 7 × dn 9 × dn
EGGER OSB 4 TOP40 × dn
80** × dn12.75 × dn 3 × dn 7 × dn
Recommendation for maximum fastener distances of non-load bearing structures
300 mm 300 mm
3 ×d
150 mm
150 mm
3 ×d
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Statics and structural physics
Further information about joining materials can be found in EN 1995-1-1, Section 8 and the relevant National application documents.
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amax Distance between in grain direction
a1*** Distance between in grain direction
a4,c
From the unstressed
edge — Fibre
a4,t*From the stressed
edge — Fibre
Wood 40 × dn 15 × dn 10 × dn 20 × dn
EGGER OSB 4 TOP40 × dn
80** × dn15 × dn 10 × dn 20 × dn
Minimum spacings according to EN 1995-1-1 in wood and the side areas of EGGER OSB 4 TOP for staples
* only in exceptional cases when load applied via edge rib without divider (edge rib subject to bending stress), for load-grain angle of 90°
** only reinforcing panelling
*** staple-grain angle ≥ 30°
Staple distances and staple-grain angle
For bracing purposes, the minimum fastener distances specified in the table must be observed. When fastening, care should be taken to prevent
tensions and squashing in accordance with EN 1995-1-1.
a1
30° a4
a
a4
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The design of timber structures is based on the applicable European standards and national annexes. Eurocode 5 has been introduced as the common rules across Europe with EN 1995-1-1 for designing timber structures.In accordance with the CE Declaration of Performance, OSB 4 TOP boards may be used as panelling on ceilings, roofs and timber frame
construction walls for applications verified by calculations according to EN 1995-1-1. In this respect also the provisions relating to the joining materials in the Declaration of Performance are to be taken into account.For a design, the possible uses in service class 1 or 2 are to be taken into account.
Preliminary dimensioning
Planning in the timber construction grid• The design grid should only be determined after gaining knowledge of the available board formats.
As a rule the panelling materials for the timber construction are matched to raster a = 625 mm or 833 mm. The “most expensive” panelling material determines the raster.
• For processing EGGER OSB 4 TOP boards, the different load-bearing capacities in the main and secondary axis are to be taken into account. In this respect the main axis equates to the direction of the surface layer, which corresponds to the first measurement for the board dimensions.
• Storey-high boarding of the wall elements is preferred, as this can be verified by a simpler design method and a reduction of the load-bearing capacity does not have to be taken into account. The minimum board thickness in walls and ceiling cladding on the underneath should be span width (mm) / 50 as a rule to prevent bulges.
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36
Statics and structural physics
Maximum perfor-mance even under constant pressure
37
Roof formwork
Rafters spacing a
in mm
Roof pitchα in °
Required board thickness d in mmgk (kN/m2 roof area)
sk = 0.85 kN/m2 sk = 1.25 kN/m2
0.25 0.50 1.00 1.25 0.25 0.50 1.00 1.25
I II I II I II I II I II I II I II I II
625
0 15 12 15 15 18 15 18 15 15 15 15 15 18 15 18 15
15 15 12 15 15 18 15 18 15 15 15 15 15 15 15 18 15
30 15 12 15 12 15 15 15 15 15 12 15 12 15 15 15 15
45 15 12 15 12 15 15 15 15 12 12 15 12 15 12 15 12
833
0 15 15 18 15 18 15 22 18 15 15 18 15 18 15 22 18
15 15 15 15 15 18 15 18 18 15 15 15 15 18 15 18 18
30 15 12 15 15 15 15 18 15 15 15 15 15 15 15 18 18
45 15 12 15 15 15 15 18 15 15 12 15 15 15 15 18 15
1,000
0 18 15 22 18 22 18 25 22 18 15 22 18 22 18 30 22
15 18 15 22 18 22 18 22 18 15 15 18 18 22 18 30 22
30 15 15 18 18 18 18 22 18 15 15 18 15 22 18 25 18
45 15 15 18 15 18 18 18 18 15 15 18 15 18 18 25 18
1,250
0 22 18 22 22 25 22 30 25 22 22 25 22 30 25 40 25
15 22 18 22 22 22 22 25 25 22 22 25 22 25 25 40 25
30 18 18 22 18 22 22 25 22 22 18 22 22 25 22 25 22
45 18 18 18 18 25 22 22 22 18 18 22 18 22 22 25 22
Preliminary design of roof formwork with EGGER OSB 4 TOP for vertical loadsAccording to the provisions of EN 1995-1-1 and CE declaration of performance, the most unfavourable load case occurring as well as a permissible deflection of l/400 for the plate effect was taken as a basis.
I = Single-field beam II = Two-field beam
Abbreviations legendgk = Inherent weightsk = Snow load
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The tables on these pages are based on the simplified design method according to EN 1995-1-1. They are used for preliminary design and do not replace the static proof of a structural engineer.
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38
Statics and structural physics
Wall panels
Bracing capacity of wall panels from horizontal loads, braced, on one side with EGGER OSB 4 TOP 12 mm, wall height h 2,500 mm - 3,000 mm
Preliminary design of wall panels with EGGER OSB 4 TOP• Service class 2• Load-duration class: short• No horizontal board joints• Board width at least wall height/4 etc.• Board longitudinal edges run parallel to the wood studs• Board joints are always located on wood studs
Joining material, ribbed nails: galvanised, DIN EN 14592/A1, d = 2.8 mm, l = 55 mm, My,k = 2,430 Nmm
Joining material, staples: galvanised, DIN EN 14592/A1, d = 1.8 mm, l = 55 mm, b = 11.2 mm, My,k = 1,040 Nmm
Stud spacing a
in cm
Panel width l
in cm
Rated value of wall bracing capacity Fv,Rd (kN) depending on staple spacing in mm and wall height h in mm
125 100 75 50
2,500 3,000 2,500 3,000 2,500 3,000 2,500 3,000
62.5 125 3.87 3.23 4.85 4.04 6.46 5.38 9.70 8.08
62.5/83.3 250 7.75 9.69 12.93 19.40
Stud spacing a
in cm
Panel width l
in cm
Rated value of wall bracing capacity Fv,Rd (kN) depending on nail spacing in mm and wall height h in mm
125 100 75 50
2,500 3,000 2,500 3,000 2,500 3,000 2,500 3,000
62.5 125 2.72 2.26 3.39 2.82 4.52 3.76 6.78 5.65
62.5/83.3 250 5.44 6.78 9.05 13.57
→
→
Fv,Rd
→
→
l
h
a
Load-bearing system of a wall
Abbreviations legendgk = Inherent weightsk = Snow load
39
Ceiling planking
Preliminary design of ceiling planking with EGGER OSB 4 TOP for vertical loadsFurther information about the service categories is described in EN 1991-1-1, Section 6.3 in conjunction with the national application documents.
Single spanNecessary board thickness with load-distributing plane
Cate- gory
Application exampleskN/m² Bearing distance in mm
qk Qk gk 415 500 625 833 1,000 1,250
A1Attics
not for residential purposes
1.00 1.000.50 15 15 15 18 22 30
1.50 15 15 15 22 25 30
A3Living room without
adequate lateral distribution
2.00 1.000.50 15 15 18 22 25 30
1.50 15 15 18 25 30 40
A3+TWLiving room with
partition wall without lateral distribution
2.80 1.000.50 15 15 18 22 30 40
1.50 15 15 18 25 30 40
B1Office areas, office,
surgery, ward2.00 2.00
0.50 15 15 18 22 25 30
1.50 15 15 18 25 30 40
B2Office/work area, hospital, hotel,
kitchen3.00 3.00
0.50 15 15 18 22 30 40
1.50 15 15 18 25 30 40
B2+TWOffice/work area with
partition walls3.80 3.00
0.50 15 18 22 25 40 2×30
1.50 15 18 22 30 40 2×30
C1Children’s nurseries, crèches, areas with
tables3.00 4.00
0.50 15 18 22 30 40 2×30
1.50 15 18 22 30 40 2×30
C2Theatre, conference,
lecture hall with fixed seating
4.00 4.000.50 15 18 22 30 40 2×30
1.50 15 18 22 30 40 2×30
C3Museum,
exhibition areas in public buildings
5.00 4.000.50 15 18 22 30 40 2×30
1.50 15 18 22 40 40 2×30
The tables on these pages are based on the simplified verification method according to EN 1995-1-1. They are used for preliminary design and do not replace the static proof of a structural engineer.
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40
Statics and structural physics
Double-spanLoaded on one side – necessary board thickness with load distributing layer
Cate- gory
Application exampleskN/m² Bearing distance in mm
qk Qk gk 415 500 625 833 1,000 1,250
A1Attics
not for residential purposes
1.00 1.000.50 15 15 15 15 18 18
1.50 15 15 15 15 18 22
A3Living room without
adequate lateral distribution
2.00 1.000.50 15 15 15 18 22 25
1.50 15 15 15 22 25 30
A3+TWLiving room with
partition wall without lateral distribution
2.80 1.000.50 15 15 15 18 22 25
1.50 15 15 15 22 25 30
B1Office areas, office,
surgery, ward2.00 2.00
0.50 15 15 15 18 22 25
1.50 15 15 15 18 25 25
B2Office/work areas,
hospital, hotel, kitchen
3.00 3.000.50 15 15 15 18 22 25
1.50 15 15 18 22 25 30
B2+TWOffice/work area with
partition walls3.80 3.00
0.50 15 15 15 18 25 30
1.50 15 15 18 22 25 30
C1Children’s nurseries, crèches, areas with
tables3.00 4.00
0.50 15 15 18 25 30 40
1.50 15 15 18 25 30 40
C2Theatre, conference,
lecture hall with fixed seating
4.00 4.000.50 15 15 18 25 30 40
1.50 15 15 18 25 30 40
C3Museum,
exhibition areas in public buildings
5.00 4.000.50 15 15 22 25 30 40
1.50 15 18 22 30 40 2 × 30
Abbreviations legendgk = Inherent weightqk = characteristic area payloadQk = characteristic single load, here from floor covering as surface loadTW = 0.80 kN/m² supplement for partition walls with max. 3.0 kN/m and at right angles to beam layer
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41
The following tables specify the possible weight load from horizontal planking (e.g. shelves) as two-field beams. The deflection in this case is l/300.
Weight bearing capacity
Span widthl in mm
Board thickness d in mm
8 10 12 15 18 22 25 30
500 82 163 285 561 975 1,787 2,626 3,606
550 60 121 212 419 730 1,339 1,969 2,977
600 50 92 162 321 559 1,028 1,513 2,499
625 50 80 142 283 494 908 1,337 2,301
650 50 71 126 250 438 806 1,187 2,059
700 50 55 99 199 348 642 947 1,645
750 50 50 79 160 281 520 767 1,334
800 50 50 64 130 230 426 629 1,096
833 50 50 56 114 202 376 556 969
850 50 50 52 107 190 353 522 911
900 50 50 50 89 158 295 438 764
950 50 50 50 74 133 249 370 647
1,000 50 50 50 62 112 211 315 552
1,100 50 50 50 50 81 155 233 410
1,200 50 50 50 50 60 117 176 312
Span widthl in mm
Board thickness d in mm
8 10 12 15 18 22 25 30
500 143 285 490 783 1,060 1,587 2,051 2,765
550 106 210 367 645 874 1,309 1,692 2,282
600 80 161 281 541 733 1,098 1,420 1,915
625 71 141 247 488 675 1,011 1,307 1,763
650 62 125 219 433 623 933 1,207 1,629
700 50 99 174 345 535 803 1,039 1,402
750 50 79 140 279 465 698 903 1,219
800 50 64 114 228 399 612 792 1,069
833 50 56 100 201 352 563 729 984
850 50 52 94 189 331 540 700 945
900 50 50 78 157 277 480 622 841
950 50 50 65 132 234 430 557 753
1,000 50 50 55 112 199 370 501 677
1,100 50 50 50 82 147 274 407 557
1,200 50 50 50 61 110 208 310 465
Double-span, loading in one fieldGuide values for weight load in kg/m², loaded on one side
Double-span, loading in both fieldsGuide values for weight load in kg/m², fully loaded
42
Statics and structural physics
Determining the charring rate According to EN 1995-1-2, Section 3.4.2 the charring rate of wood-based panels can be calculated using the following formula. In this case, with a material thickness of 20 mm and a characteristic raw density of 450 kg/m3, a burn rate of 0.9 mm/min is conservatively assumed as a rated value.
Board thickness hp
Charring rate β0
OSB/3 complies with EN 300ρk = 550 kg/m³
EGGER OSB 4 TOPρk ≥ 600 kg/m³
12 mm 1.05 mm/min 0.99 mm/min
15 mm (0.59”) 0.94 mm/min 0.89 mm/min
18 mm (0.71”) 0.85 mm/min 0.81 mm/min
≥ 20 mm 0.81 mm/min 0.77 mm/min
30 mm – 0.78 mm/min
Abbreviations legendβ0 = one-dimensional charring ratehp = board thicknessρk = characteristic raw densitykp = coefficient for the raw densitykh = coefficient for the thickness of claddingtf = time until the failure of protective cladding
→
β0 = 0.9 × kρ × kh
kp = √(450/ρk ) kh = √(20/hp ) for hp < 20 mm kh = 1.0 for hp ≥ 20 mm
→
tf = (hp/βo) - 4→
Determining the time until the failure of protective claddingAccording to EN 1995-1-2, Appendix C the time until the failure of protective cladding made of wood-based materials can be calculated using the following formula:
Fire behaviour
Charring rates for OSB 4 TOP boards with a characteristic raw density of > 600 kg/m³
43
If you would like to calculate quickly and easily with EGGER OSB 4 TOP.
Characteristic strength values and calculation values of stiffness in N/mm2 (DoP-745-01)
Material features
Thickness tnom
mm
Strength values (N/mm²)
Deflection Tensile PressurePressure
perpendicular to the board plane
Pressure in the board plane
fm ft fc fv fr
0° ¹) 90° ²) 0° 90° 0° 90° – –
8 – 10 25 15 12 10 19 16 9.0 1.6
> 10 < 18 25 15 12 10 19 16 9.0 1.6
18 – 25 25 15 12 10 19 16 9.0 1.6
> 25 – 30 25 15 12 10 17 15 8.0 1.6
> 30 – 40 20 15 10 10 15 14 6.0 1.6
Thickness tnom
mm
Stiffness values (N/mm²)
Deflection Tensile PressurePressure
perpendicular to the board plane
Pressure in the board plane
Em Et Ec Gv Gr
0° 90° 0° 90° 0° 90° – –
8 – 10 7,000 3,000 4,300 3,200 4,300 3,200 1,500 160
> 10 < 18 7,000 3,000 4,300 3,200 4,300 3,200 1,500 160
18 – 25 7,000 3,000 4,300 3,200 4,300 3,200 1,500 160
> 25 – 30 7,000 3,000 4,300 3,200 4,300 3,200 1,300 140
> 30 – 40 6,000 3,000 4,000 3,200 4,000 3,200 1,200 140
44
Statics and structural physics
d = board thickness
* The calculation values correspond to DoP-745-01
Board thick-ness d in mm
10 12 15 18 22 25 30 40
dry cup 2.0 2.4 3.0 3.6 4.4 5.0 6.0 8.0
wet cup 2.0 2.4 3.0 3.6 4.4 5.0 6.0 8.0
sd - Conversion table for EGGER OSB 4 TOP (vapour diffusion equivalents; [m])
Property Standard Unit Value
Density DIN EN 323 kg/m³ 600-640
Diffusion resistance factor μ*(dry cup / wet cup)
EN ISO 12572 – 200/200
Thermal conductivity λR EN 13986 W/(mK) 0,13
Specific thermal capacity c EN 12524 J/(kgK) 1,700
Reaction to fire DIN 4102-1 – B2 – normal flammability
Reaction to fire (d ≥ 9 mm) EN 13501-1 – D-s2, d0
Change in length per 1 % change in material moisture
EN 318 % / % 0,03
Formaldehyde emission EN 717-1 ppm < 0.03
Thickness tolerance unsanded EN 324 mm ± 0.5
Thickness tolerance sanded EN 324 mm ± 0.3
Edge straightness EN 324 mm/m ± 1.5
Squareness EN 324 mm/m ≤ 2.0
Dimensional tolerance length / width EN 324 mm ± 3.0 / ± 3.0
Thickness swelling 24 h EN 317 %d ≤ 10 mm: 12
d > 10 mm: ≤ 10
Air permeability at 50 Pa pressure difference
EN 12114 m3/m2 h d ≥ 12 mm: ≤ 0.12
Physical and other properties EGGER OSB 4 TOP
45
5546
Handling
5 HandlingDo you appreciate correct handling? So do we.
And our OSB 4 TOP boards too. What is particularly important in this respect is correct storage and packaging for easy processing. And after processing and utilisation, the time for disposal eventually comes. Here too a few things need to be considered. You will find all the necessary information about this on the next page.
47
Storage and packagingCorrect storage and packaging are essential for problem-free processing. The OSB 4 TOP boards are protected against transport and moisture dam-age as a package with a cardboard cover as well as protective slats and packaging straps. Packages with tongue and groove boards are packaged in ad-dition with stretch film to give them short-term pro-tection from rain and dirt. The following principles should generally be observed:
• OSB 4 TOP boards should be stored lying on squared timbers with a maximum gap of 100 cm. It is important to ensure a consistent height of the squared timbers.
• Upright storage (standing nearly vertical) is only possible in exceptional cases with a few boards and only on a dry surface. In this case, boards with tongue and groove profile may only stand on the groove side.
• If several packages are stacked one on top of the other, the squared timbers have to be vertically aligned.
• When transporting with a forklift truck, the squared timbers must be sufficiently high to pre-vent damage.
• The boards must be adequately protected from direct weathering during transport and storage (closed truck tarpaulin, cover sheeting).
• The storage facilities should be air-conditioned without the risk of high humidity and tempera-ture fluctuations.
• The packaging straps around the packages should be removed promptly in order to avoid compression stress in the package during stor-age in the fabricator’s warehouse or on the con-struction site.
• Acclimatising the boards for 48 hours to the an-ticipated in-service moisture level is expressly recommended before installation.
Cover sheeting
100 cm
DisposalWood-based material may be used in some material or energy applications. Pieces of OSB boards and those from demolition measures left on the construction site should first and foremost be sent for recycling. If this is not possible they must be utilised for energy generation instead of dumping (waste material key according to European waste material catalogue: 170201/030103). If wood-based materials are used for energy generation, this is
possible in closed combustion plants not requiring a permit with a rated thermal input greater than 15 kW or in combustion plants according to the 13th Federal Emission Protection Ordinance (BlmSchV) (large-scale combustion plants) and the 17th Federal Emission Protection Ordinance (waste incineration plants), as long as these are approved as a fuel in the latter.
In the case of a board thickness of < 12 mm, flooring sleepers should be used at a distance of approx. 60 cm.
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48
Handling
Stacking highmade easy.
49
6650
Service and Quality
Service and QualityAt least as good as your highest demands.
In order to satisfy your demands, OSB 4 TOP offers the highest quality standards. We guarantee these by meeting national and international product standards combined with product-specific building approvals. And if you still have any questions, our technical hotline in Wismar is happy to help you.
6
51
ServiceMore service, more knowledge – our technical application hotline answers questions about structural physics, fire protection and statics in the timber frame construction sector with professional knowledge.
The advice is focused on economic and practice-oriented constructions, as well as the professional utilisation of our building products timber, OSB, and DHF.
You receive
• customised support and expert advice for
material selection and processing
• technical field service
• technical information portal on the internet
www.egger.com/buildingproducts
• e-mail support at [email protected]
• extensive planning and product documentation
• participation in trade fairs
• association work
• technical training
• plant visits
52
Service and Quality
Technical Hotline:t +49 3841 301 - 21260f +49 3841 301 - [email protected]
→
Our supply programme is also available on the internet
Simply scan the QR code and obtain current information.
→
EGGER OSB 4 TOP delivery programme
* acceptance by load ≥ 24 t
** delivery on request, production as made-to-order delivery ≥ 250 m3
Special formats up to 11,500 mm length upon request.
EGGER OSB 4 TOP Length x Width (mm)
Board thickness d (mm)
8 9 10 11 12 15 18 22 25 30 40
Straight edging unsanded
5,000 × 2,500 **
5,000 × 1,250 * * **
3,000 × 1,250 *
2,960 × 2,500
2,800 × 1,250
2,650 × 1,250
2,500 × 1,250 ** ** **
4-sided tongue and groove profile unsanded
2,500 × 1,250
2,500 × 675
2-sided tongue and groove profile unsanded
6,250 × 675 *
53
What do we have to say on the topic of the environment?
Find answers and insights in our environment and sustainability brochure. www.egger.com/environment
→ Umwelt & Nachhaltigkeit
Mit Egger Holzwerksto� en
nachhaltig bauen und
gesund wohnen
QualityOSB 4 TOP boards are formaldehyde-free bonded, three-layered wood-based panels made of scattered micro-veneers (strands).The majority of wood used is debarked, fresh pine from sustainably managed forests. Mixed wood variants or special hardwood varieties are also used where boards must meet specific demands.
Raw materials• Fresh wood• Paraffin wax emulsion• PU resin (PMDI)• Water
Environmental sustainabilityOSB 4 TOP boards are manufactured using resource-friendly production under the strictest compliance with all environmentally relevant regulations. All EGGER products undergo regular environmental impact investigations. As a low-emission wood-based panel, OSB 4 TOP is entered e.g. in the QDF positive list.
• IBU environmental product declaration (EPD) according to ISO 14025, Type III and EN 15804
• BDF/QDF Positive list
• GHAD recommendations• Free from chemical wood preservatives• Low-emission, formaldehyde-free binding agents• Wood fresh from the forest
MonitoringOSB 4 TOP boards give the planner and fabricator a high degree of product and application safety. The highest quality standards are guaranteed thanks to national and international product standards combined with product-specific construction approvals. The boards are subject to ongoing external monitoring by an accredited institute. This regular external monitoring of the products is documented by the CE mark.
• CE certification and declaration of performance• International approvals: JAS, BBA, KOMO, PS2-10,
GOST• Quality management ISO 9001 certified• CoC certification according to FSC®, FSC-C017963
(CW) and PEFC• European Timber Regulation EUTR
54
Service and quality
You might think we are crazy. Or simply careful.
55
www.egger.com/osb4top
Technical Hotline
t +49 3841 301 - 21260 · f +49 3841 301 - 61260 · [email protected]
Would you like to know more?Simply scan here and get detailed information.
FRITZ EGGER GmbH & Co. OG
Holzwerkstoffe
Weiberndorf 20
6380 St. Johann in Tirol
Austria
EGGER Holzwerkstoffe Wismar
GmbH & Co. KG
Am Haffeld 1
23970 Wismar
Germany
EN_1
3611
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4/19
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