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Old 08-20-2021, 06:26 PM   #17
John Mercier
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Quote:
Originally Posted by XCR-700 View Post
Agreed, some materials are amazing such a laminated beams, and others are crap like zip-board.

I love seeing multi-million dollar homes made with OSB and zip-board, you know it will be guaranteed work for contractors in the future. And I dont even want to spend any effort debating the horrible smell and potential health impact those materials have on full time occupants,,,

For all the fuss about getting VOC's out of things like floor poly, they were for the most part fast drying and not a problem a few weeks later, but OSB and other engineered products off-gas at a lower level for a much longer time. I can go into most newer homes and still smell OSB and new carpet sometimes 2 years later,,,

New tech is not always better,,,
The problem with Zip would be the tape. Even applied as prescribed... the tape has a limited lifetime. But usually, it is the application rather than the product. When applied and rolled correctly, with the cost of labor, it may cost even more than the traditional sheathing and WRB with the overlap not requiring the adhesive strength to direct the water down and out.

They see it used on programs like TOH, not realizing that the representative is there behind the camera, and that the builder then places another material over the zip... like a Homeslicker or CedarBreather before applying siding/roofing.
I've seen people try to use Hydrogap, or a similar product, over it... but that can trap vapor between the layers... and in our frost/thaw environment, not good.

People that get continuing education generally learn of the failures and suggested fixes to the problem... others just keep doing it as they always have... and that may be good enough to cover the length of their warranty period... but not the most up-to-date solution.
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