in thicknesses from 1/4-in. to two inches. Some types of thicker foam board insulation are available, but may need to be special ordered. In short, it’s a great alternative to the common fiberglass ...
Rigid Foam Has A Range Of R-Values Rigid foam, or foam board insulation, is another popular option for the garage. The sheets' thickness varies between 1/2 inch to 4 inches thick, which gives the ...