Q: What is EIFS?
ASTM C1397 defines an Exterior Insulation Finish System as follows:
exterior insulation and finish system, "EIFS" (pronounced eefs) a non
load bearing, exterior wall cladding system that consists of an insulation
board attached either adhesively, mechanically, or both to the substrate; an
integrally reinforced base coat; and a textured protective finish coat.
Q: What is stucco?
Portland Cement Plaster is sand, Portland cement, lime and water.
Sometimes there are acrylic additives and fibers added.
Q: Is sealant a component of an EIFS?
No. Sealant or caulk is a component of a wall assembly.
Q: Is EIFS water-resistant?
Yes, EIFS are resistant. Water does not penetrate the field of a
wall properly clad with EIFS. The water resistance of EIFS has been
thoroughly evaluated by testing prescribed by the Model Building Codes.
Q: What is a kick out (diverter) flashing?
Kick out is colloquial term for flashing or a water diverter that
people think has just been invented or discovered. A kick out is just another
part of the flashing that should have always been at the roof/ wall
intersection of a building when the roof stops and the wall continues. They have
been used in building construction for many years.
Q: Are my windows rotting because I have EIFS?
No. The rot associated with window and window components are in no
way associated with EIFS. There are many reasons for windows and window
components to rot. The most common reason is lack of maintenance and
flashing. Even poorly constructed windows, if maintained, can last for
a while, but on the same token, a good window will rot if not properly
Q: When windows rot, does that mean that my all of my walls have damage?
No. Windows may be the second largest source for water infiltration
into walls. Usually one or both sill/jamb intersections leak. In the case of
ganged windows, the mullions leak as well as the horizontal mutton. The
damage at windows is usually directly below the sill/jamb intersection or
below the muttons.
Q: If I have a report that says backer rod is not found around the openings of my home, do I need to have it installed?
No. There are other ways to install sealant properly without backer rod.