From tested, full system integration of the air and moisture barrier in the EIFS assembly to the different basecoat and mesh options available based on the impact resistance needs of the building, EIFS has shown a continuous ability to meet the aesthetic and durability requirements of building professionals and their clients. At times however, we take for granted an important component of EIFS: the insulation layer.
Considering the need for buildings to meet or exceed stringent energy codes (Title 24, IBC, IECC, ASHRAE 90.1), we should remember that EIFS is the original continuous insulation cladding and is an ideal solution to bundle up all of the design and performance needs for the exterior wall in one simple assembly. In addition, and with regard to the insulation layer, it is important to recognize that expanded polystyrene is not the only option for EIFS. Extruded polystyrene is a popular and desirable insulation choice for architects and building owners, and recent adhesive technologies help simplify the installation of XPS in EIFS facades.