Insulation Board Under Metal Roofing

Provides high r value per inch in built up modified bitumen metal roof and single ply roof systems and utilizes an environmentally compliant blowing agent that provides high thermal insulation performance.

Insulation board under metal roofing.

Foil insulation underlayment is recommended under a metal roof and in most cases the shiny side should be facing up but there s a catch. Both materials make a great physical barrier between the interior building and the metal roof. To attach the insulation you can use screws with large washers a special adhesive made for adhering foam board insulation or for smaller pieces you can seal them in with caulk or spray foam. The batts are located side to side on the rafter of the roof.

Foil insulation is a radiant barrier and it works by. One of the more popular methods of placing metal roofing on a home is to lay down purlins across the existing shingles. Traditionally we ve insulated the roof panel to try and keep the temperature on the panel from reaching the dew point. But a preinstalled membrane may be even more effective at removing condensation.

Nail it around the edges with roofing nails. Make sure that the insulation you are using is the same thickness so that the metal roof will fit better. We ll add a vapor barrier so the moist air does not flow up through the insulation and condense on the roof. The problem with using.

Foam board insulation is easy to cut with a circular saw with a masonry blade or scored with a utility knife and snapped like you would drywall. Closed cell polyisocyanurate foam core. In this case simply lay the insulation between the purlins.