Quick Answer: How To Install Plywood Wall Sheathing?

Does wall sheathing need to be staggered?

Long edge of panels installed horizontally across supports and each succeeding course NOT staggered. Most installations are Category 1, but the critical criteria in all categories is that the panels MUST fully meet (lap) the sill plate, both top plates and 1/2 of stud at ends.

Should wall sheathing be installed vertically or horizontally?

After much research on the matter – as it impacts tiny houses – I’ve landed on a rule-of-thumb to follow: If the height of a wall is less than 8-feet, install the plywood (or OSB) vertically. If the height of a wall is greater then 8-feet, install the plywood (or OSB) horizontally.

Can you use plywood sheathing for 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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How thick should wall sheathing be?

According to the California Uniform Building Code, the minimum recommended thickness for structural panels used in wall sheathing is 5/16 inch for studs 16 inches on center and 3/8 inch for studs 24 inches on center.

How far down does wall sheathing go?

For multi-story buildings the sheathing on the bottom should extend down to the bottom of the lowest framing member & extend to the halfway point on rim-joist (as shown in red). The next piece above it should be allowed a 1/8” expansion joint ending at the top plate or at the midway point of the next rim joist.

Can you hang plywood vertically?

However, when used in wall construction as a shear diaphragm for wind or seismic loads, the panels can be run either vertically (parallel to the studs) or horizontally (perpendicular to the studs). The shear resistance of the wall stays the same regardless.

Does sheathing go over sill plate?

no, typically the sheathing come down about an inch below your sill plate so that it covers the plate-to-foundation connection. don’t forget your sill sealer under your sill plate.

What type of plywood is used for wall sheathing?

Structural Fiberboard Plywood and OSB are largely considered the best wall sheathing choices because of their overall abilities to hold fasteners well, create a strong bond between studs, and provide some thermal advantages.

What is the difference between sheathing and plywood?

Plywood sheathing is most often used to construct the structural sub-floor. Plywood sheathing can either be OSB or all plywood. Plywood sheathing is typically more expensive than OSB and is constructed using plies. The plies are constructed when sheets of veneer are cross-laminated and glued together using a hot-press.

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Is OSB stronger than plywood?

Wood fiber is used more efficiently in osb. Osb is stronger than plywood in shear. Shear values, through its thickness, are about 2 times greater than plywood. This is one of the reasons osb is used for webs of wooden I-joists.

Does wall sheathing cover the rim joist?

The wall sheathing should extend below the rim joist, which is inset on this house to allow for a continuous band of insulation. The wall sheathing below dictates the overhang.

What can I use instead of OSB?

In fact, a wide range of materials can be used to sheathe a wood-framed wall. In addition to OSB, builders can choose plywood, fiberboard, rigid foam, diagonal boards, and fiberglass-faced gypsum panels. If you’re a dyed-in-the-wool OSB user, it might be time to consider some of the available alternatives to OSB.

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