Q. I need wall insulation in my family room, but I also want to save the wall paneling, which is made of fine, thick varnished wood. I read about making holes to put the insulation inside the walls.

Learn how to properly install Owens Corning Foamular rigid foam insulation for your walls, basement, or foundation. This step-by-step guide covers cutting, fastening, sealing, and safety tips to help ...