PLYWOOD: AN ENDURING LOOK

Form plywood is specifically manufactured for use in making concrete forms. Strong and stiff, form plywood is overlaid with heavy-duty, phenolic resin paper on one or both sides to create a non-stick surface. This prevents the concrete from adhering to the form and enables easy removal and re-use of the form plywood. The water-repellant overlay paper also prevents moisture from the concrete from damaging the plywood veneers and creates a smooth finish to the concrete. This saves construction time and labour on finishing grinding. When used for concrete subfloors, form plywood must have an F stress grade rating.

Form Ply Specifications
Strength	Non-Structural, F8, F14, F17
Treatment	Untreaded. H3 Skinned: Not skinned, 1 Face, 2 Face
Thickness	12.5mm, 17mm, 17.5mm
Profile	Square Edge, Tongue and Groove (T&G)
Certification	AS2269
Cores	Pine, Poplar, Hardwood
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Exterior cladding plywood can be an inexpensive way to clad a house or other lightweight structures or to add accents to a design. Available in either a grooved or rough sawn finish, cladding plywood can be either painted or stained to achieve a variety of looks. Strong, yet lightweight, these treated panels are made from New Zealand Radiata Pine and have vertical shiplap joints for easy and watertight installation. As non-bracing cladding, they are manufactured to achieve a minimum of 15 years’ durability*. Plywood cladding cannot be used for all buildings, and you should check the manufacturer’s specifications. A full range of aluminum flashings are available to make installation easy. *In accordance with NZBC Clause B2 Durability.

Cladding Ply Specifications
Strength	Structural only
Treatment	H3.1 and H3.2
Thickness	12mm
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Roofing Plywood is a structural grade plywood with a plastic tongue and groove down the long edge of the sheet for easy joining over roof trusses. This is the major difference to the product. As a structural ply, it is certified to AS/NZS 2269 and available in F8 and F11 stress grades. When laying roofing ply, the sheet should always be laid perpendicular to the roof truss to achieve the maximum structural strength, and the sheets should be staggered. Roof ply comes in an unsanded DD surface grade which gives roofers extra grip when installing. As a roofing substrate normally used under shingles or bitumen, care needs to be taken to seal any cut edges with a preservative treatment.

Roofing Ply Specifications
Strength	Structural, F8, and F11/F8
Treatment	Untreated. H3.2 CCA treated.
Thickness	15mm to 25mm
Certification	AS2269
Cores	Pine
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As the name suggests marine plywood is primarily used for boat building, where its superior qualities of strength, consistency and impact resistance have made it the “go to” material for decades. But marine ply also suits a wide number of applications where moisture can be an issue. Kitchens, laundry areas - even saunas and swimming pool changing rooms are ideal locations for marine ply. The main difference with marine ply is the waterproof resin (glue) between each of the thin layers of wood. As well as the resin, marine ply must be constructed to British Standard. But even with these elements, marine ply still needs layers of treatment to maximise its lifespan. The rule of thumb is a layer of epoxy sealant per layer of wood in the ply. Due to its special nature marine plywood is available from PlaceMakers on special order.

Marine Ply Specifications
Strength	Non Structural only
Treatment	Untreated only
Thickness	4mm, 6mm, 10mm, 12mm, 15mm, 18mm, 25mm
Certification	BS1088
Cores	Various
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