Sheathing is one of the most basic and widely used applications for rigid expanded polystyrene (EPS) insulation in residential and commercial construction. It helps create an envelope around the structure covering wall cavities and studs to increase resistance to heat transfer and moisture penetration. Due to its versatility, ease of installation and consistent performance benefits, rigid EPS insulating sheathing is a standard in the industry.
EPS sheathing is non-structural and is primarily used as an exterior insulator, both below and above grade; it can also be utilized throughout the structure in roof, floors and ceilings. It is available in sheets measuring 2′x8′, 4′x8′ and 4′x9′ ranging in thickness from ½ inch to 6 inches. Different densities help provide the R-value required to meet local building energy codes. Expanded polystyrene sheathing is used in new construction as well as remodeling. It is compatible with wood and steel framing, and masonry applications.
Amvic has recently introduced SilveRboard a reflective aluminum foil lamination to the rigid EPS insulation board to increase the resistance of radiant heat absorption. When a radiant barrier is combined with dead air space, it can actually add to the insulation value of the wall assembly.
For other non reflective laminated EPS insulation products please see the menu to the right