Atlas EnergyShield® PRO exterior wall insulation and sheathing is composed of a Class A fire rated closed cell polyisocyanurate (polyiso) foam core faced with an embossed white acrylic-coated aluminum foil facer on the front and a reflective foil facer on the back. This strategy isolates the air/vapour barrier in the wall and offers a hassle-free cavity so that the polyethylene is not punctured for wiring or plumbing. Regular wall panels are obtainable in R-20 to R-40 ( RSI 3.5 to 7.) with roof panels up to R-60 (RSI 10.5). That signifies that if your walls are composed of 80% insulation and 20% framing, you are genuinely only get 80% of the doable insulating value.

Not all exterior walls are load bearing, but in most circumstances they will serve some structural function like supporting the roof. Box beam lintels can be created of plywood and are one particular way to improve … Read the rest