12mm Q Mark/ Sapphire Hardwood Plywood Class 3

Class 3 plywood is an exterior-grade sheet material bonded with weather- and boil-proof (WBP) adhesive, designed to withstand full exposure to weather and high-moisture environments. ‘Q Mark / Sapphire’ Hardwood Plywood refers to a premium, structural-grade engineered timber panel manufactured from high-quality hardwood veneers and certified under the independent, third-party BM TRADA Q-Mark Structural Plywood Scheme. Often distributed under premium trade classifications Sapphire Plywood, these boards are highly engineered to prevent warping and cracking, providing total transparency and peace of mind for rigorous architectural and construction specifications. Key Features Adhesive Standard: Conforms to EN314-2 Class 3, meaning the glue line resists weather and boiling water. Service Class: Rated under EN636-3 for exterior and fully exposed service conditions. Standard Sheet Size: Typically comes in 2440mm x 1220mm (8′ x 4′) panels. Thickness Range: Available in various sizes from 5.5mm ,9mm, 12m up to 18mm