Exterior foam sheathing

AP Foil-Faced Foam Sheathing Data Sheet. Rigid foam sheathing is a form of insulation — continuous insulation, to be exact — that’s applied to the exterior of the building. Since it’s used in conjunction with traditional wood sheathing and interior insulation, some builders may wonder what the point is.

Exterior sheathing is used to help strengthen the walls of a new home. When used in home construction, exterior wall sheathing is very multi-functional. For example, wall sheathing performs the obvious job of providing a surface to fasten siding materials to, but it also works to hold numerous studs together to give the home structural. Installing rigid foam on the exterior side of roof sheathing makes just as much sense as installing rigid foam on the exterior side of wall sheathing. For more information on this issue, see How to Install Rigid Foam On Top of Roof Sheathing.

If the exterior of the rigid foam serves as the water control layer, the air control layer would still be house wrap or paint-on membrane that is installed between the existing house sheathing and the rigid foam. These strong, lightweight, rigid foam panels with a film face provide the durability and damage resistance necessary to meet the rigorous demands of site built construction. One concept relating to enclosure design is to incorporate the use exterior foam insulating sheathing into the construction of the wall assembly.

As with any building enclosure system, appropriate detailing for the management of water, vapor, and energy transfer are necessary. High R , radiant and vapor barrier. Rigid foam and cellulose-fiber panels may be attached directly to wall studs or masonry walls, under or over structural sheathing (depending upon nailing requirements), or, in some cases, over existing siding before re-siding. It’s also virtually impervious to moisture, preventing loss of R-value due to moisture penetration. Common Sense Building: Exterior Wall Sheathing 101.

For others that have to add foam on the exterior , some start to wonder, “if I. A layer of XPS or Polyiso foam board insulation is installed on top of the wall sheathing. Insulfoam rigid foam is a high-performance built-to-spec sheathing Insulfoam rigid foam is a high-performance built-to-spec sheathing insulation that provides superior R-value and moisture resistance. It is offered in multiple thicknesses and dimensions in both square-edged and tongue-and-groove joints.

Re: Installing windows on the outside of faom sheathing Some energy experts claim you can use exterior foam as a WRB (water-resistant barrier). Proven in Over 20Homes. Featuring integrated moisture, air and thermal protection, ZIP System R- sheathing completely reimagines traditional wall assemblies by streamlining exterior water, air and thermal management.

Non-structural exterior wall installation of the sheathing is on the exterior or interior side of the structural sheathing. Examples of non-structural exterior wall sheathing are plastic, foam , cellulose fiber, paper faced and foil faced boards. The foam sheathing will be thinner where it is installed over the OSB at building corners so that the exterior face of the foam sheathing at the corners lines up “flush” with the exterior face of the foam sheathing in the “field” of the wall. Wood framing typically constitutes of the surface area of walls, so the proper installation of insulated foam sheathing can prevent thermal bridging and increase a home’s energy efficiency. Insulating sheathing comes in various R-values.

Some builders worry that exterior foam sheathing is a “wrong-side vapor barrier” that can trap moisture in walls. In new construction without interior polyethylene vapor barriers, the worry is baseless. As long as the foam sheathing is thick enough, it will reduce the chance that moisture will accumulate in a wall.

With built-in continuous exterior insulation and an integrated air- and water-resistive barrier, it eliminates the need for housewrap and additional exterior insulation in one, easy-to-install sheathing system. Foil faced insulation: Foam , bubble or fiberglass. Insulated foam sheathing can provide the highest R-value in protecting your home. One of the other advantages of insulated foam sheathing is the moisture and humidity control it provides. Because the exterior face of the foam insulation is also the drainage plane, the sill flashings must extend out to the exterior face of the sheathing.

Foam -Control Exterior Sheathing Superior moisture resistance, breathability, and stable R-value to protect your insulation integrity. Foam -Control is a cost-effective, durable, and energy efficient solution for insulated sheathing applications. Key standards for foam sheathing and applications of foam sheathing referenced by the building codes, sorted by application. Select an option below to expand it for more information.

Browse our selection now to find the foam board insulation you need. To meet energy codes, many homes in colder climates are now built with a layer of exterior foam insulation between the siding and sheathing. And when an existing home is re-side it’s increasingly common to first retrofit it with a wrap of rigid foam panels. Exterior Foam Sheathing : Good Insulator, Bad Water Resistive Barrier Exterior foam sheathing acts as a good insulator when added to walls.

However, there are several issues with the use of foam sheathing as a water resistive barrier (WRB) and air barrier. Calculate U-factors and vapor retarder options for steel-frame wall assemblies using foam sheathing. I just had a quick question. OSB ok to use as sheathing ? OSB is half the price of plywood so cost is the reason we ask. Structural Insulated Exterior Sheathing.

C-SIS sheathing may be applied with either a standard drywall screw gun on metal studs or wood.