Building with quality insulation and wallboard will keep your home warm, dry and energy efficient from the attic down to the foundation. That’s why Interstate + Lakeland Lumber offers the best insulation and wallboard supply from Dow® and Owens Corning®. We stock Owens Corning® fiberglass Insulation in kraft faced, unfaced and fire code/sound attenuation batts, and Dow® Board rigid Styrofoam™, for superior home insulation and soundproofing.