How thick of plywood should I use for walls?

½” thick
Using ½” thick plywood for walls is standard, although the International Residential Code specifies only 3/8” wall sheathing when studs are spaced 16” apart and the siding is attached to the studs and not just the plywood. For buildings with siding attached only to the sheathing, the IRC requires ½” plywood.

What is a standard size piece of sheathing?

4 x 8 feet
If building in the United States, the length and width of plywood is measured in standard units. As described, the most common size for a sheet of plywood is 4 x 8 feet. Hardwood plywood is also available in sizes 2 x 2 feet, 2 x 4 feet, and 4 x 4 feet.

Does sheathing go over sill plate?

As Brandon Chew (PE) stated on the other site, the sheathing must be secured to the top and bottom wall plates and studs. The sill plate is secured to the foundation, the subfloor to the sill plate, and the walls/ sheathing to the subfloor.

How thick should exterior plywood sheathing be?

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.

What is the difference between sheathing and sanded plywood?

Sheathing: Standard construction plywood used for wall sheathing, roof decking, floor structures (subflooring) and general rough construction where looks and surface imperfections aren’t important. Sanded plywood: General-purpose “project” plywood with decent-looking face veneers that have been sanded smooth.

Is it OK to use plywood instead of drywall?

You can use plywood instead of drywall for walls and ceilings. Plywood weighs less, and it’s also stronger and more damage-resistant than drywall. Construction-grade plywood is more expensive, though, and it might not meet local building codes as it isn’t as soundproof or fireproof as drywall.

Plywood. Plywood is common roofing material.

OSB. OSB is created by combining wood chips (wood fragments) and glue together to form a product similar to plywood.

Concrete. Concrete decking is a favorite among sustainability-minded builders for its heavy-duty capacity and no-fuss maintenance.

What is the typical size of plywood?

The most common plywood sheet dimension, 4 feet by 8 feet, translates to the metric dimensions of 1,219 by 2,438 millimeters. Hardwood plywood comes also in abbreviated sheets measuring 2 by 2, 2 by 4, and 4 by 4 feet, while utility-grade plywood comes in longer 4-by-10-foot sheets.

How to choose a plywood size and thickness?

A-grade plywood features a smooth,sanded surface without knots.

B-grade plywood also features a smooth,sanded surface,but may have more repaired defects up to 1-inch across.

C-grade is unsanded and may have several minor defects that will need to be repaired with knots up to 1 1/2-inches across,discoloration and sanding defects.