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Moisture Intrusion
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When EIFS wall systems are used in buildings constructed of wood framing and wood sheathing it is very important that all termination points of the system are properly flashed or sealed. The lack of or the improper installation of flashings at roofs, windows, doors, and decks can result in moisture intrusion. In some cases, poor installation practices by the contractor may also cause problems.
The National Association of Home Builders [NAHB] announced through a press release in 2001 that an installer's guide on moisture protection of wood sheathing was available. In this press release it states "Exterior claddings including brick, stucco, vinyl siding and exterior insulation finish systems [EIFS] all have the same potential for sheathing and stud damage if weather barriers, flashings, and opening protections are not used or installed incorrectly."
Because of the concerns about moisture intrusion the manufactures of EIFS wall systems have developed new systems that incorporate improved weather barriers and provisions for drainage. The manufactures have also implemented more rigorous and more frequent applicator training programs to insure proper installation of their systems.
Texas Bureau for Lathing and Plastering
August 6, 2003 |
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