Exterior Insulation and Finish Systems

Exterior insulation and finish systems (EIFS) are multilayered exterior wall systems that are used in both commercial and resi­dential construction. Sometimes referred to as synthetic stucco, the basic five primary components include a rigid insulation board, an adhesive to attach the insulation board to a suitable substrate, a reinforcing mesh that is embedded in a base coat over the insulation board, and a textured finish. EIFS (pronounced “eefs” or “eefus”) were developed in Europe in the early 1950s and were introduced to the United States around 1969. They were first used on commercial buildings and later on homes. EIFS currently account for about 17 percent of the U. S. commercial exterior wall market and about 3.5 percent of the residential wall market (Fig. 11.11).