alphaville Secrets
I put 2" foil faced polyisocyanurate (Dow Tuff-R) on the inside partitions of my basement, simply by attaching it with three" Tap-it concrete anchors and taping the seams with foil tape, you will require a hammer drill to generate the holes within the concrete. I also pieced the polyiso into just about every rim-joist bay and sealed the perimeters