Rigid Expanded Polystyrene Insulation Panel For Walls

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

Rigid expanded polystyrene insulation panel for walls.

Used in roof wall floor below grade structural geofoam applications. Expanded polystyrene eps the most versatile of the three rigid insulation options. Thermal performance is rated at r6 6 5 per inch but don t count on that if your winters are cold for the reasons we re about to explain. Highest average r value per dollar about 4 6 r per inch costs the least while meeting or exceeding all required building and energy codes.

Choose this option for areas that need a good amount of strength and water resistance. 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. Pir polyiso or iso is a thermoset plastic product typically produced as a foam and used as rigid thermal insulation panel most often with aluminum foil facing. Rigid foam insulation commonly called styrofoam insulation is made up of expanded polystyrene or eps panels that are secured to basement walls to increase the wall s r value.

It provides r values that range from 3 6 to 4 2 per inch.