General Purpose Plywood 2440 x 1220 x 12mm
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Product Details
12mm softwood plywood in a full 2440 x 1220mm sheet. A versatile mid thickness board used for flooring overlays, hoarding, shuttering and general construction work. Typically C+/C grade with one cleaner face, bonded with exterior grade glue.
As of August 2026, PriceNailer data confirms that the cheapest price for General Purpose Plywood 2440 x 1220 x 12mm is £19.14 from BuilderDepot across 3 suppliers. Prices have decreased by 8.1% over the last 2 months.
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Frequently Asked Questions
What is 12mm general purpose plywood typically used for?
12mm general purpose plywood is a versatile mid-thickness board suited for flooring overlays, site hoarding, shuttering, general construction, and DIY projects. Its balanced thickness offers good rigidity without excessive weight, making it popular for both trade and domestic use. The cleaner C+ face also makes it suitable for applications where one visible side matters.
Is 12mm plywood strong enough for flooring?
12mm plywood can be used as a flooring overlay or subfloor topping when laid over an existing solid base such as concrete or existing floorboards. It is not typically recommended as a standalone structural floor panel over joists — for that, 18mm or 22mm tongue-and-groove flooring grade plywood is preferred. Always ensure joists are adequately spaced and the sheet is fully supported when used underfoot.
What does C+/C grade mean on general purpose plywood?
C+/C grading refers to the quality of each face of the plywood sheet. The C+ face is the cleaner side with fewer knots and surface defects, while the C face (the reverse) may have more natural imperfections and repairs. This grading makes it suitable for general construction where appearance on one side may matter slightly, but a furniture or joinery finish is not required.
Is this 12mm plywood suitable for external or wet conditions?
This plywood is bonded with exterior grade glue (typically WBP — Water Boil Proof adhesive), which means the bond between the plies is resistant to moisture. However, the softwood veneers themselves are not fully weatherproof and will degrade if left permanently exposed to rain without a protective coating or cladding. For prolonged external exposure, treat the board with a suitable preservative or use a marine/exterior grade plywood instead.
How many 2440 x 1220mm plywood sheets do I need to cover a given area?
Each standard 2440 x 1220mm sheet covers approximately 2.97 square metres (just under 3m²). To calculate the number of sheets needed, divide your total area in square metres by 2.97 and round up to the nearest whole sheet. It is good practice to add 10% to your total to account for cutting waste, particularly on irregular areas or when running sheets at an angle.