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.

Rigid foam insulation roof detail.

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. First the foam will increase thermal performance by adding r value and minimizing thermal bridging. If providing a vented over roof. 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.

There s a reason polyiso rigid foam insulation is used in more than 70 of commercial roof construction as well as in many residential builds. While all foam insulation products are derived from petroleum some of the key differences include water resistance r value per inch compressive strength facings permeability to water vapor and evidently cost. Transfer the markings for framing locations through each layer of insulating sheathing. The benefits of adding a layer of rigid foam insulation to the exterior of walls and roofs are twofold.

Polyiso is an easy cost effective sustainable and energy efficient construction material. Install rigid insulation board over the air control layer in multiple layers with joints offset vertically and horizontally between adjacent layers. Detail the outer layer of the insulating sheathing as a drainage plane. Foamular roof insulation is made with a high percentage of pre consumer recycled material.

Expanded polystyrene eps extruded polystyrene xps and polyisocyanurate are the most used types of rigid foam insulation.