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.

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. Install nailbase for cladding. Install roofing underlayment flashing and cladding as per best practices.

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 installation after the roof deck is ready the rigid foam insulation is installed. But one thing that some builders don t like is the high global warming potential of some blowing agents used to make the foam. Rigid foam insulation also known as insulating boards provide high r values.

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. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. The r value is a measurement of the heat loss and heat gain. The rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets.

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. Polyiso is an easy cost effective sustainable and energy efficient construction material. Rigid insulation is one of the best tools to reduce your energy costs. Install it anywhere from the roof to the foundation.

Expanded polystyrene eps extruded polystyrene xps and polyisocyanurate are the most used types of rigid foam insulation. You can even place it under the foundation slab. A continuous layer of rigid foam insulation in wall and roof assemblies leads to lower energy consumption an environmental plus to be sure.