Sorting through the Liquid Applied Weather Barriers
After a productive discussion on Weather Resistive Barriers behind a masonry wall, I am starting this new thread in hopes of hearing people’s experience and opinion about the newfangled Liquid Applied Weather Resistive Barriers (LAWBs). In the raging debate about housewraps and tapes and claddings, the LAWB solution seems to overcome some of the inherent problems.
Martin has already written on the topic: https://www.greenbuildingadvisor.com/node/17000
Three options are on the table: there is a Tyvek brand product, Tremco has a product called EnviroDri, and Dana Dorsett suggested using 2-part spray foam (not really a liquid, but kind of the same idea.)
Tyvek trains contractors to apply it’s LAWB. Their site pointed me to a single contractor in Ohio, and I got a quote for close to $3 a square foot. (Of course, that’s more than just rolled-on goop: there’s seam sealers and tapes that are incorporated in the process.) That’s WAAAAAAY more than I figured this process would/should cost, but I’m willing to adjust my cognitions.
Tremco neither answers their phone nor responds to their online query form. I can’t seem to find anything on Google that would point me to a contractor or even a place to buy the stuff.
Spray foam? In the range of a buck-a-foot, and I can apply it. But there’s no documentation or manufacturer support for this use, as far as I know.
Would appreciate feedback/advice. Thank you all.
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