Mike writes from Saint Paul, Minnesota: "In an earlier post you said 'When attaching the wallboard I suggest first fastening wood furring to the wall. The gypsum board can then be fastened to the wood furring.' Exactly how do you recommend that the furring be attached to the wall. Do you place the furring on top of the Foamular and nail or screw through it into the wall? Or do you leave spaces between the sheets of Foamular for the furring?"

Answer: Owens Corning makes a specific FOAMULAR® Insulation product for this application. It is called InsulPink® Basement Wall Insulation. When these panels are butted together the edges form a channel to receive the furring strip. The furring strip goes over the FOAMULAR Insulation and the fasteners go through it and into the wall.