Putting 1 Foil Faced Ridig Board Under Attic Roof

Then a second layer of plywood sheathing and asphalt shingles following the steps explained in this article.

Putting 1 foil faced ridig board under attic roof.

If you want to use them without creating a vapor barrier look for permeable iso panels faced with fiberglass. Foam insulation boards are the best material with which to work when undertaking a do it yourself project because foam. However foil faced iso panels are warranted as impermeable. 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.

4 of polyiso under 4 of eps all above the original roof sheathing. 2 measure and cut the foam boards as. Foam board insulation in the attic can cut down on energy costs and simultaneously promote a more environmentally sound way of daily living. Select rigid foam insulation boards that are at least 1 2 inch less in thickness than the rafter space is deep if you plan to finish the attic as living space.

Installing rigid foam insulation. Cut ap foil faced foam sheathing to fit snuggly between the rafters. Install ap foil faced foam boards between rafters directly against the bottom of the roof sheathing. Foil insulation is a radiant barrier and it works by.

Installing foam insulation boards in the attic is no that hard and can save you money compared with professional installation. The r value of the insulation must meet local building code requirements for unvented attics to prevent condensation.