Expanded polystyrene eps the most versatile of the three rigid insulation options.
Rigid expanded polystyrene insulation panel for walls.
Also called styrofoam insulation this is the least expensive material.
Choose this option for areas that need a good amount of strength and water resistance.
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.
Used in roof wall floor below grade structural geofoam applications.
Used most widely in insulated concrete forms and structural insulated panels.
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.
Expanded polystyrene eps extruded polystyrene xps and polyisocyanurate are the most used types of rigid foam insulation.
Some products have reinforced facing to make them sturdier.