What goes between sheathing and siding?

Underlayment
Underlayment or weather resistive barrier (WRB) is installed between the siding and the sheathing. This can be tar paper or a house wrap such as HardieWrap® or Tyvek HomeWrap®.
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What goes between siding and wood?

The wood that goes under residential siding – exterior sheathing – performs several functions. It adds insulation, waterproofing and structural support for the framing. It also provides a surface on which to nail the siding. The most common sheathing materials include oriented strand board and plywood.
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What sheathing goes under vinyl siding?

Vinyl siding can be installed over common wood sheathings such as plywood, oriented strand board (OSB), or other materials (e.g., foam plastic insulating sheathing). The thickness of wood sheathing counts toward the total thickness that the fasteners must penetrate into nailable material, usually 1 1/4” (32mm).
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Do you need sheathing under siding?

Most new walls need sheathing to strengthen them, to act as a nailing base for siding, and/or to boost insulation. Existing walls usually do not require sheathing unless you are stripping off the old siding and applying a different type that calls for sheathing.
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What is sheathing attached to?

It is attached to the exterior wall framing and prevents walls from swaying or bending. Builders use sheathing as a nailing base for siding, creating the walls of a building.
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Framing: OSB vs. PLYWOOD vs. ZIP vs. ZIP-R - Sheathing Options



What materials are directly attached to a home's 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.
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What is behind wood siding?

Underlayment. Underlayment or weather resistive barrier (WRB) is installed between the siding and the sheathing. This can be tar paper or a house wrap such as HardieWrap® or Tyvek HomeWrap®. HardieWrap® is great for keeping water out and at the same time letting water vapor escape from the house.
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Can you use Tyvek without sheathing?

When Tyvek® is used under sheathing, it functions only as an air barrier, and does not protect the sheathing as a secondary weather barrier. Tyvek® has been used directly over studs where there is no sheathing, although use of sheathing is a highly recommended building practice.
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What goes on top of Tyvek?

Stucco and stone veneer do best with two layers of Tyvek. Brick and foam sheathing should have an air space between it and the Tyvek. Other materials may be installed as usual, although measures that reduce moisture in contact with the Tyvek are always recommended.
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Can you put siding directly on studs?

NOTE: Vinyl siding must be applied over a rigid sheathing that provides a smooth, flat surface or an underlayment (such as wood, wood composition, rigid foam or fiber sheathing) that is no more than 1" thick. Vinyl siding cannot be applied directly to studs.
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What is the black board under my siding?

It's a wood fiber board with a thin asphalt coating often called "buffalo board" or "beaverboard", the trade name of the long defunct Beaver Board Co.
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Can you use OSB under siding?

Oriented Strand Board (OSB)

The 7/16 inch variety is the type most often used under siding. Advantages come with using OSB. It costs less than regular plywood, and it dries faster. It will rot when exposed to water and retains water, however.
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What is a furring strip for siding?

What are Furring Strips? Furring strips are long thin pieces of material usually made of wood or metal. They are used to make a backing surface for the siding to attach to. These strips create the drainage plane that is essential for rainscreen siding to be effective in the way that it was designed for.
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What is siding underlayment?

Siding Underlayment is a sheathing and stucco board that offers incredible insulation that features higher compressive strengths, R-values, and greater moisture resistance.
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What is the board below siding called?

Buttlock. The bottom portion of a panel of vinyl siding that locks into a previous panel that was just installed. This keeps the siding from moving around.
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Do you seal the top of Tyvek?

Apply DuPont™ Residential Sealant, or recommended sealant, along the top/bottom of the wall approximately 2 to 3” from the edge. Press the Tyvek® WRB into the sealant using firm hand pressure or a J-roller.
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Do you have to use Tyvek under siding?

There is no logical reason not to have house wrap under vinyl siding, and many authorities strongly agree that it should be viewed as mandatory, even if your local building codes don't necessarily require it. Vinyl siding is one of, if not the most popular exterior cladding for residential homes.
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Can you staple Tyvek house wrap?

Tyvek says you can use 4 staples per 9 feet of house wrap if you tape over them an apply the siding right away. But a cap stapler is better. Apply house wrap up the gables before installing exterior trim, even if the attic is not conditioned.
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Does house wrap go over or under foam board?

If you choose to install house wrap with rigid foam, generally, it should go under the insulation, not around it.
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Do you need sheathing under T1 11?

T1-11 siding 3/8” or less in thickness isn't rated as structural and will require sheathing underneath it.
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