EXTERIOR INSULATION & FINISH SYSTEMS (EIFS)

HouseMaster Common Home Concerns

EIFS is a multi-layered exterior wall cladding system that has been commonly available since the early 1980’s. The substrate for EIFS is a foam insulation board that is glued or mechanically attached to the wall sheathing. A reinforced base coating, which serves as a moisture barrier, is then applied directly over the insulation board. The final finish is provided by a durable stucco-textured coating made of synthetic and natural materials. This finish coating is often referred to as synthetic stucco.

Considerations
Specifically identified as a serious concern is the possibility of structural damage to wall sheathing and framing, particularly in the areas under and adjacent to windows. The primary cause for this condition appears to be infiltration through improperly sealed joints at the siding and trim work interface. As a result of the moisture retardant features of some of the EIFS components, any water that infiltrates past the surface may become entrapped and eventually cause decay of all adjacent wood components. The HouseMaster Technical Staff recommends that all EIFS clad homes be checked by a qualified inspector for evidence of moisture infiltration concerns and where required, completion of the required preventative or remedial work should be completed.

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