Exterior Wall Foam Insulation Board

R 7 5 scored squared edge rigid foam board insulation sheathing model 88wd view the owens corning exterior insulation.

Exterior wall foam insulation board.

Exterior foam board this is probably the most common approach to exterior foam insulation. It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation. Some builders use 1 2 inch wood sheathing r 0 6 or asphalt impregnated sheathing usually called blackboard r 1 3 to sheath the walls. Continuous rigid insulation is a construction solution that provides a thermally efficient building enclosure.

Eps is used under roofing over foundation walls and beneath siding. It is recommended that you install foam board insulation for exterior walls of concrete foundations concrete slabs basement walls and crawl spaces. Rigid foam sheathing is a form of insulation continuous insulation to be exact that s applied to the exterior of the building. Step 1 prepare the wall.

Typically sold as sheet insulation in a standard size of 4 x 8 foam insulation panels can help reduce energy costs get a handle on moisture control and more. Owens corning foamular 150 1 1 2 in. We install the foam over a layer of house wrap using cap nails followed by taping all the seams with an approved foam insulation tape. Polyisocyanurate is another option coming in as the densest and more expensive option for foam board.

The best practice for increasing the r value in exterior walls is to protect them with insulated foam sheathing. Rigid insulation sheathing is made of a rigid plastic foam that is typically sold in 4 8 or 4 10 foot boards. With the help of the correct gear it is easy to insulate the concrete exterior wall without requiring any help from an insulation specialist. Research by several teams has provided the critical scientific basis for acceptance of foam sheathing by the codes community and resulted in best practices for installation to ensure thermal performance as well as air barrier and drainage plane integrity.

Building america ba has been advocating the use of rigid foam sheathing insulation for years as a means to improve the home s thermal envelope by increasing r value while minimizing thermal bridging in wood framed walls. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. A layer of xps or polyiso foam board insulation is installed on top of the wall sheathing. Thermax ci dupont thermax ci exterior foam insulation is a rigid board insulation consisting of a glass fiber reinforced polyisocyanurate foam core faced with nominal 1 25 mil embossed blue thermoset coated aluminum on one side and 0 9 mil smooth reflective aluminum on the other.

Owens corning foamular 150 1 in.