Rigid Foam Roof Insulation

Polyiso is an easy cost effective sustainable and energy efficient construction material.

Rigid foam roof insulation.

The rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. Nailbase must be vented in high snow load areas. The r value is a measurement of the heat loss and heat gain. 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.

Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. 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. They keep your home at a comfortable temperature without the need to crank your heat. But one thing that some builders don t like is the high global warming potential of some blowing agents used to make the foam.

Install roofing underlayment flashing and cladding as per best practices. Expanded polystyrene eps extruded polystyrene xps and polyisocyanurate are the most used types of rigid foam insulation. 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. Depending on the type of insulation you choose and the desired r value you want for your facility you may need to build up a few layers of insulation.

Rigid foam insulation also known as insulating boards provide high r values. A continuous layer of rigid foam insulation in wall and roof assemblies leads to lower energy consumption an environmental plus to be sure. Install nailbase for cladding. 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.

Install it anywhere from the roof to the foundation. R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance.