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Re: Dryvit / EIFS

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I concur with Harold.

EIFS is in itself not a bad system and has various advantages (as well as
disadvantages) over traditional materials, not the least of which are
flexibility in aesthetic treatments, easily achieved insulation values and
low weight. Historically, EIFS was considered a water barrier.
Unfortunately, this required, and assumed, perfect installation, regular
maintenance and attention to interfaces with roofing, windows, doors,
penetrations, etc. Interfaces with these other trades were the common source
of water intrusion and consequently water penetration related problems and
failures resulted where quality installation was not achieved. However, as
with masonry, if it is considered to be resistant but not impermeable, then
a drainage system, including flashing, weeps, etc., are designed and
installed as part of the overall cladding system. The performance of EIFS
should then match the more common facade treatments.

James Cohen, PE
James Cohen Consulting, PC
Pennington, NJ

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