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 ...

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 ...

That will depend on the thickness of the insulation. A 1-inch-thick foam EPS foam board offers a thermal resistance value of ...