Plywood Boards

Plywood was originally developed to provide panels with dimensional stability and good strength properties both along and across the panel. Plywood is an engineered wood product, made from straight, well-grown timber suitable for a wide range of applications. Plywood has an EN product standard covering its use in exterior conditions. To enhance the durability, appropriate coatings or preservative treatments are added to plywood. British Standard BS EN 636 refers to bond quality and surface appearance, the durability of the timber species used in the veneer and the veneer quality. In plywood, the higher mechanical (structural) properties are in the direction of the major axis, which is usually the longer side.


Plywood can maintain a high performance under a wide variety of environmental conditions. The high strength to weight ratios are influenced by the species used, softwood and hardwood, and also on the glues used in production. Plywood is generally made from veneers that are peeled from a log and are bonded together with an adhesive, with the grain of adjacent veneers at right angles to each other. The adhesive is cured by pressing the panel using heated platens.

As defined in BS EN 309,

  • Plywood Wood-based panel consisting of an assembly of layers bonded together with the direction of the grain in adjacent layers, usually at right angles.
  • Veneer is a thin sheet of wood not more than 7mm in thickness.
  • Ply is either a single veneer, or two or more veneers joined edge to edge or end to end.
  • Layer is either one ply or two or more plies, glued together with their grain direction parallel, or with another material.
  • Multi-ply Plywood formed of more than three layers.
Typical adhesives used are; 
  • urea-formaldehyde (UF) - only suitable for interior use.
  • phenol-formaldehyde (PF) - has greater moisture resistance, suitable for use in humid or in exterior situations.
  • melamine-urea-formaldehyde (MUF) - for exterior or even marine plywood.
Many different wood species can be used for plywood manufacture, where the log can be reliably peeled or sliced into veneer. Softwood such as spruce, pine, fir and hardwood such as birch, beech, poplar and eucalyptus. The quality of the plywood depends on the quality of the wood species and lay-up of the veneers and on the resin type and bonding technology.

Prior to peeling the veneer, the logs are soaked or steamed in order to increase the moisture content. The veneers are then dried to a moisture content of about 4%8%. Open defects may be repaired using plugs or filler to upgrade the panel. The dried veneers are sorted into grades, usually by visual inspection. Synthetic resin adhesive is applied to the veneers by appropriate technology and the veneers are assembled with the grain of each normally at 90 to the adjacent veneer, also known as lay-up.

  • Structural plywood are used in, floor decking, flat roofing, wall sheathing, concrete formwork, external cladding.
  • Marine plywood has a very high performance under severe exposure conditions, and used in ship or boat building.
  • Utility plywood is intended for non-construction applications, for joinery, furniture and mostly for interior uses.

  • Class 1 - for interior applications with no risk of wetting, 
  • Class 2 - for use in protected exterior applications,
  • Class 3 - for use in unprotected external applications.
Plywood normally has higher mechanical properties in a direction parallel to the face grain. If plywood panels are laid edge to edge, it is essential that suitable expansion gaps are provided to allow for any dimensional movement during service. Plywood can be fixed by nails, screws and staples or by gluing, depending upon the application and requirements. It possible to use nails and other mechanical fastenings quite close to the panel edges without the risk of pull out. Ring shank nails give improved performance over plain wire nails, when fastening plywood to timber. Glued joints provide stiffer joints than ones made with mechanical fixings alone. Plywood can be sanded and painted.

Plywood being a wood product is safe when it is handled and used correctly. When cutting or machining plywood, measures must be taken to control the dust. The formaldehyde content of plywood is normally very low and emission of formaldehyde is not often an issue. 



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12mm Firesure Premium Arch Dricon Plywood Euroclass B - 2440mm x 1220mm

12mm Firesure Premium Arch Dricon Plywood Euroclass B - 2440mm x 1220mm

12mm x 2440mm x 1220mm - 2.98m2  Delivery Time: 1 - 2 days

A1-3473

12mm x 2440mm x 1220mm Firesure Premium Arch Dricon Plywood is an Euroclass B, enhanced reaction to fire performance board for interior use. It has been pressure impregnated with a special flame retardant solution Arch Dricon and kiln dried. The chemical used in the impregnation proce..

A1-3473
= m2
other sizes
12mm Firesure Premium Arch Dricon Plywood Euroclass C - 2440mm x 1220mm

12mm Firesure Premium Arch Dricon Plywood Euroclass C - 2440mm x 1220mm

12mm x 2440mm x 1220mm - 2.98m2  Delivery Time: 1 - 2 days

A1-3469

12mm x 2440mm x 1220mm Firesure Premium Arch Dricon Plywood is an Euroclass C, enhanced reaction to fire performance board for interior use. It has been pressure impregnated with a special flame retardant solution Arch Dricon and kiln dried. The chemical used in the impregnation proce..

A1-3469
= m2
other sizes
12mm Wisa Spruce Plywood Special CE2+ - 2440mm x 1220mm - FSC Certified

12mm Wisa Spruce Plywood Special CE2+ - 2440mm x 1220mm - FSC Certified

12mm x 2440mm x 1220mm - 2.98m2  Delivery Time: 1 - 2 days

A1-3495

12mm x 2440mm x 1220mm Wisa Spruce Plywood Special CE2+ is a smooth, strong, structural multipurpose plywood panel with a superior surface quality, made from spruce veneers from wood harvested from FSC certified forests in Finland. The panel is lightweight, strong and rigid and is used in load ..

A1-3495
= m2
other sizes
12mm Wisa Spruce TG4 Plywood Special CE2+ - 2400mm x 600mm - FSC Certified

12mm Wisa Spruce TG4 Plywood Special CE2+ - 2400mm x 600mm - FSC Certified

12mm x 2400mm x 600mm - 1.44m2  Delivery Time: 1 - 2 days

A1-3505

12mm x 2400mm x 600mm Wisa Spruce TG4 Plywood Special CE2+ is a smooth, strong, structural multipurpose plywood panel with a superior surface quality, made from spruce veneers from wood harvested from FSC certified forests in Finland. The panel is lightweight, strong and rigid and is used in lo..

A1-3505
= m2
other sizes
18mm Latvian Birch White Melamine Double Sided Grade A Plywood CE2+ - 2440mm x 1220mm - PEFC Certified

18mm Latvian Birch White Melamine Double Sided Grade A Plywood CE2+ - 2440mm x 1220mm - PEFC Certified

18mm x 2440mm x 1220mm - 2.98m2  Delivery Time: 1 - 2 days

A1-3493

18mm x 2440mm x 1220mm Latvian Birch Plywood CE2+, PEFC Certified, White Melamine Double Sided Grade A panel for structural applications.  A strong general purpose board for internal applications, a structural component in humid conditions. Has superior strength and stability, and also superior..

A1-3493
= m2
56mm Kingspan Thermaroof TR31 PIR bonded to Plywood (pack of 20)

56mm Kingspan Thermaroof TR31 PIR bonded to Plywood (pack of 20)

1200x2400 - 57.60m2  show quantity discountsDelivery Time: 3 - 5 days

Guide Price: £1,123.92 (£1,348.70 inc VAT)

£19.51/m2 (£23.41/m2 inc VAT)

show quantity discounts
A10-386
Due to nationwide shortage of PIR insulation lead time may be longer for this product.

56mm Kingspan Thermaroof  TR31 is the flat roof insulation comprising a high performance rigid PIR thermoset insulation core faced with an FSC certified 6 mm nominal thickness WBP exterior grade plywood on its upper surface and a low emissivity composite foil facing on its lower surface. T..

Guide Price: £1,123.92 (£1,348.70 inc VAT)

£19.51/m2 (£23.41/m2 inc VAT)

show quantity discounts
A10-386
= m2
other thicknesses
62mm Cellecta Hexatherm XPLY Plywood Thermal Laminate Roof Board

62mm Cellecta Hexatherm XPLY Plywood Thermal Laminate Roof Board

1200x2400mm - 2.88m2  Delivery Time: 2 - 4 days

A1-1653

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..

A1-1653
= m2
other thicknesses
96mm Celotex TD4000 PIR Flat Roof Insulation Board with Plywood

96mm Celotex TD4000 PIR Flat Roof Insulation Board with Plywood

TD4000 - 2400 x 1200   show quantity discounts

Guide Price: £71.04 (£85.25 inc VAT)

£24.67/m2 (£29.60/m2 inc VAT)

show quantity discounts
A10-175
Due to nationwide shortage of PIR insulation lead time may be longer for this product.

Celotex TD4000 comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK, and low emissivity aluminium foil facings on both sides bonded to a layer of 5.5mm WBP exterior grade plywood.APPLICATIONCelotex TD4000 is purpose designed for use in light traffic flat..

Guide Price: £71.04 (£85.25 inc VAT)

£24.67/m2 (£29.60/m2 inc VAT)

show quantity discounts
A10-175
= m2
other thicknesses
9mm Firesure Classic Arch ATP Plywood Euroclass C - 2440mm x 1220mm

9mm Firesure Classic Arch ATP Plywood Euroclass C - 2440mm x 1220mm

9mm x 2440mm x 1220mm - 2.98m2  Delivery Time: 1 - 2 days

A1-3463

9mm x 2440mm x 1220mm Firesure Classic Arch ATP Plywood is an Euroclass C, enhanced reaction to fire performance board for interior use. It has been pressure impregnated with a special flame retardant solution Arch ATP and kiln dried. The chemical used in the impregnation process and the process its..

A1-3463
= m2
other sizes
9mm Latvian Birch Plywood BB/BB CE2+ - 2440mm x 1220mm - FSC Certified

9mm Latvian Birch Plywood BB/BB CE2+ - 2440mm x 1220mm - FSC Certified

9mm x 2440mm x 1220mm - 2.98m2  Delivery Time: 1 - 2 days

A1-3477

9mm x 2440mm x 1220mm Latvian Birch Plywood BB/BB CE2+, FSC Certified, strong general purpose board for internal applications, a structural component in humid conditions. Has superior strength and stability, and also superior resistance to loss of bond strength with time. Birch plywood is made up of..

A1-3477
= m2
other sizes
9mm Wisa Spruce TG4 Plywood Special CE2+ - 2440mm x 1220mm - FSC Certified

9mm Wisa Spruce TG4 Plywood Special CE2+ - 2440mm x 1220mm - FSC Certified

9mm x 2440mm x 1220mm - 2.98m2  Delivery Time: 1 - 2 days

A1-3503

12mm x 2440mm x 1220mm Wisa Spruce TG4 Plywood Special CE2+ is a smooth, strong, structural multipurpose plywood panel with a superior surface quality, made from spruce veneers from wood harvested from FSC certified forests in Finland. The panel is lightweight, strong and rigid and is used in l..

A1-3503
= m2
other sizes
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