Rigid foam R-values range from R-1 for 1/4-inch thick sheathing panels to R-15 for 3-inch thick panels. The R-value is not entirely a function of the material's thickness, as the facing material ...

R-values of 11 to 15 can be achieved in 2-by-4 walls that are 3.5 inches thick, while 2-by-6 walls can have r-values of 19 to 21 with 5.5 inches of insulation. Fiberglass Insulation ...

Then they covered that with an open-cell foam board that’s 3/4-inch thick. It seemed the smart thing to do is tear all this off, and I started to do just that, but then I thought to ask you ...

Vapor barrier. Unlike other insulation systems, closed cell spray foam will create a vapor barrier if sprayed at a certain thickness. Years ago,approximately2-1/2inchesof 2-lb. foam was required ...

Kingspan Insulation North America recently introduced Kooltherm® K100—a high-performance foam plastic insulation engineered to meet the thermal, space, and safety demands of construction and retrofit ...

Spray foam insulation: Mid-range R-value per inch; Structural insulated panels: High R-value per inch; Rigid insulation boards: High R-value per inch; ...

The previous owners of the house glued 2-inch-thick foam insulation to the poured concrete walls. It’s got an aluminum foil face on it. Then they covered that with an open-cell foam board that ...

Q. I’m 23 years old and just got out of college. I bought my first small house and am about to remodel my basement. The previous owners of the house glued 2-inch-thick foam insulation to the ...