Rigid Foam Roofing Insulation

Install rigid insulation board in multiple layers with joints offset vertically and horizontally between adjacent layers.

Rigid foam roofing insulation. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. Foamular extruded polystyrene xps rigid foam insulation offers foamular extruded polystyrene xps rigid foam insulation offers a comprehensive line of products in a wide choice of sizes thicknesses and edges with a lifetime limited warranty for the life of the home or building. 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. This foam board insulation is available with straight or tongue and groove edges to help limit air movement.

It is denser than eps and provides more r value with a rating of 5 per inch of thickness. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. The ideal roof 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.

Expanded polystyrene eps extruded polystyrene xps and polyisocyanurate are the most used types of rigid foam insulation. Owens corning foamular xps insulation is a closed cell moisture resistant rigid foam board ideal for many roofi ng applications including single ply protected roof membrane assemblies prma tapered vegetative roofs plaza decks architectural metal roofi ng and recover roofi ng. The products are easy to handle score cut and install and no special tools are needed. The r value is a measurement of the heat loss and heat gain.

Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck. Polyiso is an easy cost effective sustainable and energy efficient construction material. 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 insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance.

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 foam installation after the roof deck is ready the rigid foam insulation is installed.