Not known Details About big in japan
I place 2" foil confronted polyisocyanurate (Dow Tuff-R) on the interior walls of my basement, by just attaching it with 3" Faucet-it concrete anchors and taping the seams with foil tape, you'll need a hammer drill for making the holes while in the concrete. I also pieced the polyiso into each individual rim-joist bay and sealed the edges and seams