Readers ask: What Do I Use To Cover Plywood On Outside Of House?

What to use on exterior walls?

Here are some of those exterior wall sheathing options and how they affect your house as a whole.

  • Oriented-Strand Board (OSB)
  • Plywood.
  • Structural Fiberboard.
  • Diagonal Tongue & Groove.
  • Foam Board.

What kind of plywood goes on the outside of a house?

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.

What is a good substitute for 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.

Which is stronger OSB or plywood?

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. However, nail-holding ability controls performance in shear wall applications.

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Is OSB cheaper than plywood?

OSB is less expensive than plywood. To build a typical 2,400-square foot home, OSB may cost $700 less than plywood. OSB is considered by many to be a “green” building material because it can be made from smaller-diameter trees, such as poplars, that are often farmed.

What is exterior grade plywood?

Exterior Grade Plywood, (also known as construction-grade plywood), is made from regular grade plywood sheets. Yet, these sheets have been fastened together using water-resistant ‘Exterior Glue’. Exterior grading is usually indicated by adding an ‘X’ letter to the standard grade of a sheet of plywood.

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.

Which side of OSB plywood faces out?

The smooth side has a better moisture resistance and will ultimately provide better performance against weather. Facing the board smooth side out will maximize its ability to keep moisture out of the structure. It is simple why manufacturers create roughness on OSB boards.

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.

How do you waterproof exterior plywood?

Spray – on or paint – on Latex is another effective plywood protector. It’s available at hardware stores and forms a waterproof layer on the surface of the plywood to protect it from moisture. Liquid Latex products are easy to apply and relatively inexpensive.

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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.

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