In a relatively short period, several manufacturers began producing various versions of EIFS materials. Residential and commercial installations were common. Due to the high demand, sometimes inexperienced, or under-trained, installers made costly mistakes for the buildings’ owners.
Failures in some installations at roof rakes, chimneys, floor lines, around windows, doors, and protrusions caused problems.
Although the material itself is water resistant, sometimes moisture is able to get behind the siding and it cannot get out. This can lead to mold and wood rot between the exterior and interior walls. These conditions are also perfect for subterranean termites.
Any type of exterior siding is susceptible to moisture problems. However, because of the superior nature of EIFS’ water resistance, the problems are intensified. Once water gets in, it cannot get out. The only way to know if you have damage is to do a water analysis.
The problems with EIFS are widespread. One environmental inspection company inspected more than 100 homes over a ten-month period and all but a handful had damage to some degree.
Most, if the EIFS was installed properly, could be corrected with minor repairs. However, some of the homes needed repairs costing as much as $60,000 on a $500,000 home.