The 12mm Exterior Grade Class 3 Hardwood Plywood 2440mm x 1220mm (8′ x 4′) is a strong, versatile plywood sheet designed for exterior applications. Built to BS EN636-3S / Class 3 standards, it offers excellent weather-resistant performance and is suitable for use in walls, roofs, floors, hoardings, cladding, and general outdoor projects.
Source: Materials Market product page
With a 12mm thickness and a smooth, easy-to-work surface, this hardwood plywood provides a stable and reliable panel that is simple to cut, fix, and finish. It is made from quality hardwood veneers and offers a good strength-to-weight ratio, making it a practical choice for both trade and DIY use.
This board is FSC / PEFC certified, helping support responsible sourcing, and should be properly sealed on all faces and edges when used externally to maintain long-term performance.
