![]() 1-1/4″ and 1-1/8″ plywood sheets are generally true sizes and not nominal. The exception to this rule is plywood sheets that are over an inch thick. A 1/ 4” sheet is actually 7/ 32” thick. ![]() A 1/ 2” sheet is actually 15/ 32” thick.A 3/ 4” sheet is actually 23/ 32” thick.Because the actual thickness may vary, measuring the plywood sheet using a caliper is the only accurate way to determine its thickness. Plywood is often sold in 1/ 4“, 1/ 2“, or 3/ 4” nominal thicknesses, but the actual thickness is often 1/ 32” thinner. What is the Actual Thickness of a Sheet of Plywood This introduces challenges when precision measurements are needed, such as determining clearance when using the plywood as an underlayment for flooring or countertops. While the length and width are often the actual dimensions, the nominal thickness is usually different from the actual thickness.įor example, a sheet of plywood with a nominal thickness of 3/ 4” is often less than 3/ 4” thick. ![]() Plywood sheet goods are available in various thicknesses and sizes and are typically sold by their nominal thickness, as well as by the number of plies – 3 ply and 5 ply being common. ![]() The veneers are glued perpendicular to each other, creating a cross-grain pattern that is much stronger than solid wood. The wood is peeled from a log in thin sheets different types of wood will yield different thicknesses of veneer. Plywood is a wood panel that is composed of several thin layers, or plies, of wood veneer. ![]()
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