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Can you use plywood for exterior walls?

Minimum Plywood Thickness

The International Residential Code specifies 3/8-inch plywood for sheathing walls with a standard stud spacing of 16 inches, if the siding is nailed to the studs through the sheathing. When shopping for 1/2-inch exterior-grade plywood, you may only be able to find 15/32-inch material.

Subsequently, one may also ask, what type of sheathing is used for exterior walls?

Five common structural exterior sheathing options include wood-based, gypsum, glass mat, cement board, and Barricade® Thermo-Brace®. Plywood sheathing is made from whole sheets of wood that are cross-laminated, which give the boards strength and stiffness. This helps with expansion and contraction.

Subsequently, question is, can you use OSB for exterior walls? OSB is sold in 4-by-8-foot or 4-by-10-foot sheets. Studs behind the OSB are on 24-inch or 15-inch centers, making it easy for you to align the nails and secure the OSB to the exterior. Paint the OSB with two coats of a premium exterior topcoat. Use a topcoat that will stand up to the weather in your area.

Also Know, can you use plywood outside?

Exterior plywood is not restricted to outdoor use. It’s almost always used as a subfloor in most homes so that its waterproof qualities will resist moisture from below or water that may be spilled from above. Exterior plywood can also be used on countertops around sinks or even inside cabinets.

What size plywood do you use for exterior walls?

The International Residential Code specifies 3/8-inch plywood for sheathing walls with a standard stud spacing of 16 inches, if the siding is nailed to the studs through the sheathing. If the nails penetrate the sheathing, but not the studs, the minimum plywood thickness that the IRC designates is 1/2 inch.

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