Plywood is a popular choice for residential and light-duty construction and is made from thin sheets of veneer, also called plies, that are glued together in alternating, perpendicular directions to create a cross-graining pattern. This pattern results in added strength and stability that resists shrinkage and expansion. Featuring a real wood veneer, plywood can be stained, painted and treated, and is available with tongue and groove design. Plywood is perfect for general construction, furniture, exterior walls and roofing. It can also be used for underlayment, wainscoting, siding and high-moisture applications where treated wood is required.