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.

Does foam board go over house wrap?

If you are installing “innie” windows, your housewrap should go under the foam. If you are installing “outie” windows, your housewrap should go over the foam.

Can you put foam board over Tyvek?

DuPont does not recommend taping the foam seams regardless of whether the Tyvek® is installed under or over the foam. Not taping the seams will have very little effect on the foam R-value, and because of the low permeability of the foam, the open seams will help the wall breathe.

Does house wrap go over sheathing?

House wrap is a synthetic and lightweight material that goes over the sheathing and behind the siding (vinyl, wood, stucco, brick, or composite). A home's first defense against air leaks and water infiltration is the siding or cladding.

Does Tyvek go over sheathing?

DuPont^™ Tyvek^® weather barriers can be used either over or under 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.

Install HomeWrap® OVER Rigid Foam Board and Window | DuPont™ Tyvek®

What goes on first Tyvek or insulation?

If you choose to install house wrap with rigid foam, generally, it should go under the insulation, not around it.

Do you need Tyvek with foam insulation?

You don't need Tyvek for air sealing on a foamed home. As has been stated, vinyl siding needs it for waterproofing the subsiding. Other siding systems might be able to do without it, but it's a cheap insurance policy. As noted above, housewrap performs two functions, as an air barrier and as a secondary drainage plane.

Can you install vinyl siding over rigid insulation?

Vinyl siding can be used in original construction or as a replacement for old siding. It typically is installed over rigid foam board insulation fastened to wood wall sheathing. Insulation provides a smooth surface for vinyl that allows expansion and contraction.

What kind of insulation goes under vinyl siding?

This is most common with vinyl siding. The foam board is nailed in place with washer head nails and should be taped at the seams to prevent air movement. The typical R-value of this product is R-2.5 to R-3.5 depending on the density of the foam board.

What do you put behind 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.

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.

Do you need house wrap with SilveRboard?

No House Wrap Needed

SilveRboard XS has been specifically engineered for exterior wall sheathing application on wood or steel frame construction. The reflective laminated surfaces are micro-perforated so that the insulation materials can “breathe,” offering both water vapour permeance and an air barrier.

Do you need sheathing under Tyvek?

A combination of sheathing and Tyvek provides a much better protective barrier. In addition, having the Tyvek attached directly to the studs means that it is unsupported between the studs and more prone to damage and penetration before and during siding installation.

Can you spray foam against house wrap?

There apparently is an adhesive additive for spray foam, which will assist in the foam being able to stick to house wraps or other slick surfaces. As closed cell spray foam is a vapor barrier, and is resistant to moisture passing through it in either direction, adding a weather barrier to the outside becomes redundant.

Can you insulate under siding?

By adding a continuous layer of insulation under new siding, you are able to wrap the home in a complete blanket of energy savings. In addition, flat foam insulations can help level out inconsistencies in the wall for a more perfect siding appearance.

Can I 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.

Is foam board a vapor barrier?

Rigid foam board, especially foil-faced polyisocyanurate, creates a vapor-impermeable barrier, so the wall would have limited drying potential. Even more permeable types of insulation, such as expanded polystyrene, are vapor barriers when the installation is thick enough.

Do you tape the bottom of house wrap?

Seal the bottom of the house wrap to the sheathing with caulk or tape. Overlap the layers shingle-style as you go up the wall—like roofing shingles. Overlap vertical seams 6-12 inches.

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.

Do you tape bottom of Tyvek?

Seal the DuPont™ Tyvek® around all electrical, HVAC and plumbing penetrations with DuPont™ Weatherization Sealant, DuPont™ Tyvek® Tape, or DuPont™ Flashing Systems products. Start taping or flashing at bottom of penetrations, shingling upper tape over bottom tape.