Plywood, as the term indicates, is made of multiple overlapping thin sheets of wood. These sheets are glued together with alternating fibers which are always arranged in odd alternating numbers (3, 5, 7, etc.): the result is a particularly robust panel in which stresses and deformations are “compensated” for by the alternate arrangement of the fibers.
The plywood does not have a high resistance to moisture, so it is used only for indoor furniture. But there is a version suitable for outdoor use: marine plywood.
It is made of sheets glued together with a particular adhesive which is unaffected by water and it is treated in order to make it waterproof.
Outdoor facilities and even parts of boats or parts of submerged elements can be made with marine plywood.
Easy to work: It can be easily glued and perforated; further it holds together well when assembled with screws.
Stable: Thanks to the overlapping wood sheets glued with crosswise fibers, the panel offers a good flexural strength.
Hard and impact-resistant, but lightweight: thanks to these technical features it is used in different fields such as building, marine and general furniture construction.