Our Marine Plywood can be exposed to moisture for long periods used, In the marine boat building and construction industries, interior and exterior applications. Please contact us for more details. Plywood is a sheet material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. Ply is ideal for roofing, flooring, hoardings and walls. Hardwood, Softwood & Marine are now in stock at all of our branches. Buy great products from our Plywood Category online at Beesley & Fildes or Colin Myers timber.