![]() This may vary by manufacturer, though, so always check if you need a precise size or measurement. 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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