Among the most effective and easy-to-install insulation choices for your enclosed carport, garage or metal building is foam board. The same stuff that NASA has used to insulate a space shuttles external tank, keeping its liquid hydrogen fuel at minus 423F and its liquid oxygen tank at near minus 297F to prevent ice buildups on the inner fuel tanks exterior surface, can be used to keep your metal carport toasty in the wintertime and cool during the summer. While fiberglass insulation works by slowing down the rate of passage of heat into your home during hot summers and out of…