Art writes from Zeeland, Michigan: "I am not planning to finish the back area of my basement but I do want to do some insulating. I am planning to put some adhesive on INSULPINK® rigid foam insulation and adhere it right onto the concrete. Is this alright? Why does your info sheet say to cover with an interior finish material as soon as the insulation is completely installed?"

Answer: Adhesives used with FOAMULAR® insulation products must be petroleum free. All extruded polystyrene (XPS) insulation products must be covered with a 15-minute thermal barrier such as gypsum board and the gypsum board must be fastened to wood studs or furring strips.