Putting 1 Foil Faced Ridig Board Under Attic Roof

We live in zone 5 suburb of chicago and are hopefully about to put rigid foam above the roof sheathing on just the northeast roof portion of our roof.

Putting 1 foil faced ridig board under attic roof.

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

Foam board insulation in the attic can cut down on energy costs and simultaneously promote a more environmentally sound way of daily living. Installing rigid foam insulation. 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.

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. Then a second layer of plywood sheathing and asphalt shingles following the steps explained in this article. 2 measure and cut the foam boards as. Installing foam insulation boards in the attic is no that hard and can save you money compared with professional installation.

Cut ap foil faced foam sheathing to fit snuggly between the rafters. There s two ways you can go about with foam board insulation.