Rigid Foam Insulation Roof Detail

Once the roof demo was complete and the flat roof was cleared of any remaining debris some rotted 2x material around the perimeter of the roof was replaced.

Rigid foam insulation roof detail.

All atlas acfoam polyiso insulation boards are qualitymark certified providing consumers an easy way to identify premium products that meet or exceed building codes for the best in roof performance. You will need to hire some well trained roofing insulation experts to make a more energy efficient home. It is the only xps insulation with certifi ed recycled content certifi ed by scientifi c certifi cation systems. Install rigid insulation board over the air control layer in multiple layers with joints offset vertically and horizontally between adjacent layers.

Foamular roof insulation can help contribute to credits under the leadership in energy and environmental design leed program of. Detail the outer layer of the insulating sheathing as a drainage plane. In warm climates zones 1 through 4 low density open cell spray foam insulation is the typical choice since it is vapor permeable and will allow drying of the exterior sheathing and roof framing if they happen to get wet via diffusion into the interior of the building. There are lots of different ways to insulate this type of roof but one of the best methods calls for the installation of rigid foam insulation above the roof sheathing.

Polyiso is an easy cost effective sustainable and energy efficient construction material. Adding the metal roof insulation can be done easily when you renovate your house. The benefits of adding a layer of rigid foam insulation to the exterior of walls and roofs are twofold. Second the foam will keep the sheathing warm so moisture passing through the wall or roof will find no cold surfaces for condensation to occur.

Expanded polystyrene eps extruded polystyrene xps and polyisocyanurate are the most used types of rigid foam insulation. First the foam will increase thermal performance by adding r value and minimizing thermal bridging. Foamular roof insulation is made with a high percentage of pre consumer recycled material. Transfer the markings for framing locations through each layer of insulating sheathing.

Flat roof insulation installation the rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. Or you may also consider metal roofing over rigid insulation details even though it might be a bit pricier. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing. If providing a vented over roof.