Rigid Styrofoam Insulation R Value

Used in this way the foam lowers the loss of energy through framing members a phenomenon called thermal bridging and increases the overall r value of the roof or wall assembly.

Rigid styrofoam insulation r value.

Corrosion problems when in contact with steel roofing moisture. Foam board insulation types. There are three basic foam insulation board products on the. 4 8 7 21.

This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. 4 5 21. Rigid foam insulation also known as insulating boards provide high r values. Fiberglass insulation is less than half the price of rigid foam insulation when calculated by r value per square foot.

Install it anywhere from the roof to the foundation. Very good air bypass leak sealing properties. 8 3 4 4 8 2 20. They keep your home at a comfortable temperature without the need to crank your heat.

Phenolic foam spray insulation. Rigid insulation is one of the best tools to reduce your energy costs. Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. Rigid foam insulation packs a lot of r value into a relatively thin package.

R 0 77 30 phenolic foam insulation r values. For example insulating a 10 square foot wall area to r 15 costs about 3 40 to 4 00 with fiberglass insulation while a comparable r value for rigid foam costs roughly 10. It is often used as a layer of continuous insulation on exterior walls and in the roof. It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation.