Rigid Foam Roof Insulation

Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance.

Rigid foam roof 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. Install it anywhere from the roof to the foundation. Rigid insulation is one of the best tools to reduce your energy costs. 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.

Nailbase must be vented in high snow load areas. 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. The rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. But one thing that some builders don t like is the high global warming potential of some blowing agents used to make the foam.

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. Polyiso is an easy cost effective sustainable and energy efficient construction material. They keep your home at a comfortable temperature without the need to crank your heat. A continuous layer of rigid foam insulation in wall and roof assemblies leads to lower energy consumption an environmental plus to be sure.

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. 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.

You can even place it under the foundation slab. Install roofing underlayment flashing and cladding as per best practices. Rigid foam insulation also known as insulating boards provide high r values.