Putting 1 Foil Faced Ridig Board Under Attic Roof

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

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. 2 measure and cut the foam boards as. Multiple layers of foam board may be required. There s two ways you can go about with foam board 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. The r value of the insulation must meet local building code requirements for unvented attics to prevent condensation. 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.

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. Installing foam insulation boards in the attic is no that hard and can save you money compared with professional installation. 4 of polyiso under 4 of eps all above the original roof sheathing. However foil faced iso panels are warranted as impermeable.

Cut ap foil faced foam sheathing to fit snuggly between the rafters. 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.