- Q.How should tongue-and-groove
plywood be laid? Do you have to account for expansion
between sheets?
A.The American Plywood
Association recommends that T&G plywood
sheets be spaced 1/16 inch apart at both sides and
ends. The thickness of a nickel is about right. A
little more space is acceptable; less is not. This
applies whether or not a construction adhesive is
applied to the joint.