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Wood Based

OSB was developed in the mid 1970s to utilise smaller logs that are not suitable for plywood production. Made of strands normally about 75mm long with the strands in the surface layer oriented roughly in line with the length of the panel. This gives the panel higher mechanical properties in that direction. OSB is usually composed of three layers with the strands of the outer two layers orientated in a particular direction, more often than not in the long direction of the panel.

BS EN 300 differs OSB panels into four technical classes;
  • OSB/1 General purpose boards, and boards for interior fitments (including furniture) for use in dry conditions,
  • OSB/2 Load-bearing boards for use in dry conditions,
  • OSB/3 Load-bearing boards for use in humid conditions, 
  • OSB/4 Heavy-duty load-bearing boards for use in humid conditions.

Plywood was developed to provide panels with dimensional stability and good strength properties both along and across the panel. Straight, well-grown timber is required for plywood manufacture. Plywood is a versatile product made from both hardwood and softwood that can maintain a high performance under a wide variety of environmental conditions. They can have an attractive surface appearance. Veneer plywood is made from veneers that are peeled from a log. These are bonded together with an adhesive that is appropriate to the end use, with the grain of adjacent veneers at right angles to each other. The adhesive is cured by pressing the panel using heated platens.

The durability of plywood depends on the bond quality, the durability of the timber species used in the veneer and the veneer quality. The preservative treatments and finishing coatings can also enhance the durability. Plywood can be manufactured to have specific properties, making it suitable for a wide range of applications. Plywood is one of the few panel types that has an EN product standard covering its use in exterior conditions.

Chipboard is a panel material manufactured under pressure and heat from particles of wood (wood flakes, chips, shavings, sawdust and similar) and/or other lignocellulosic material in particle form (flax shives, hemp shives, bagasse fragments, straw and similar), with the addition of a polymeric adhesive as defined in the British Standard BS EN 309.

Wood chips are prepared in a mechanical chipper generally from coniferous softwoods, principally spruce, although pine and fir and hardwoods, such as birch, are sometimes used. Recycled source can also be used. These chips are bound together with synthetic resin systems such as urea-formaldehyde or melamine urea-formaldehyde, phenol-formaldehyde and polymeric methylene di-isocyanate. The chips are formed into a mat and are then pressed between heated platens to compress and cure. The finished panels are then sanded and cut to size.

They are not normally suitable for exterior applications. There are moisture resistant panels classified for use in humid conditions. While such panels may be resistant to periods of short-term wetting or high humidity, this does not mean that the panel is waterproof and direct wetting should be avoided. While chipboard is not normally attacked by wood boring insects, it can be subject to fungal decay under prolonged wetting.

Fibreboard is produced by either wet process or dry process.

Wet process - The fibreboards are made by reducing steamed wood into fibres and adding water to form a slurry. This is then formed into a mat on a moving wire mesh. Much of the water is removed by pressing and the final heated pressing bonds the fibres using the adhesive properties of the natural lignin adhesive present in the wood. The final density of the panel depends on the degree of pressing, resulting in softboard, mediumboard or hardboard. In some products additives are used to improve properties.

Dry process - the wet fibres are dried and an adhesive is added, and then it is formed into a mat and pressed. The resulting product is generally termed medium density fibreboard (MDF). 

Hardboard is used in flooring, roofing overlays, internal wall linings, roof sarking and wall sheathing. MDF is commonly used for architectural mouldings, staircases and window boards.

CHOOSE MANUFACTURERS or scroll down to see products (show)

Brand: Kemwell Model and Size: 2400x1200 - 2.88m2
Delivery Time: 8 - 12 weeks
12mm Kemwell WeatherKem Fibre Cement Board is an A-1 fire rated non-combustible weather-proof board for interior and exterior applications. These boards are manufactured using a mixture of cement, pozzolana, superior grade cellulose fibre and siliceous base binders. The fibres enhances the bending s..
Guide Price: £52.84
£63.41 inc VAT
Brand: CMS Danskin Acoustics Model and Size: 600x2400mm - 1.44m2 23mm
Delivery Time: 3 - 5 days
KarmaFloor Acoustic Overlay Chipboard is designed to reduce impact sound through floors using a heavy material isolated by a softer resilient layer. The board consists of a 5 mm closed cell, cross linked polyethylene resilient layer, laminated to moisture resistant tongue and groove chipboard. APPL..
Guide Price: £39.97
£47.96 inc VAT
Brand: CMS Danskin Acoustics Model and Size: 2400x600mm - 1.44m2
Delivery Time: 1 - 2 days
Karma Acoustic Joistdeck 37 is a high performance overlay board designed to be installed directly on to joists with a resilient acoustic ceiling system below. It comprises 22mm T&G4 chipboard laminated to a 15mm chipfoam resilient layer. Reduces both airborne and impact sound through timber..
Guide Price: £41.17
£49.40 inc VAT
38mm Cellecta Hexatherm XCHiP Thermal Laminate Chipboard - XPS Insulation
Guide Price
Brand: Cellecta Model and Size: 600x2400mm - 1.44m2
Delivery Time: 2 - 4 days
38mm Cellecta XCHiP is a high performance insulation board with a 18mm chipboard laminate facing. Cellecta XCHiP combines the benefits of HEXATHERM high performance thermal insulation with a P5 moisture resistant, tongue and groove chipboard to produce a high compressive strength, interlocking floor..
Brand: Xtratherm Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1-3 working days
56mm Xtratherm FR/TP Ply is a composite insulated panel of 50mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 6mm WBP grade plywood board. Xtratherm FR/TP Ply is designed to provide high levels of thermal insulation and decking in one operation for new and refurbishment flat ..
59mm Insulated Render Panel - 50mm Kingspan Kooltherm K5 Bonded to 9mm OSB  - 2400mm x 1200mm
Guide Price
Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1 - 5 working days
59mm Thermal Render Panel is a composite board consists of a 9mm OSB board bonded to a 50mm Kooltherm K5 phenolic foam core that can take the render. The Thermal Render Board provides a high level of thermal insulation, render board and a quicker construction saving money and time. It also saves the..
Brand: Xtratherm Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1-3 working days
Xtratherm Plydeck is a composite insulated panel consisting of a 50mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 9mm OSB board. This innovative product provides both thermal insulation and decking in one application. Application Xtratherm Plydeck is designed ..
Guide Price: £77.01
£92.41 inc VAT
62mm Cellecta Hexatherm XPLY Plywood Thermal Laminate Roof Board - Extruded Polystyrene (XPS)
Guide Price
Brand: Cellecta Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 2 - 4 days
62mm Cellecta Hexatherm XPLY is a high performance extruded polystyrene thermal insulation roof board bonded to a 12mm plywood laminate facing, also suitable for internal walls and floors. It combines the benefits of high performance extruded polystyrene with a facing board to produce a composite th..
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