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rockies
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# Posted: 26 Mar 2016 07:26pm
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Has anyone used the ZIP system of plywood sheathing and taped seams? I'm wondering about the advantages of air infiltration and moisture prevention versus the house wrap option.
http://www.dupont.ca/en/products-and-services/construction-materials/building-envelop e-systems/articles/wall-sheathing-comparison.html
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Don_P
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# Posted: 27 Mar 2016 08:20am - Edited by: Don_P
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Yes, used at the insistence of a "smart" DIY'er, I assume the target audience.
Check the article source. That article is however pretty much spot on.
Think about how you would provide long term flashing of penetrations with ZIP, you can't. Windows, step flashings, etc... think it through.
Somebody posted a link to a builder who was touting this system not long ago. Sure enough, it took less than 5 minutes of looking at his photos (people don't take pictures of known errors) to see the water funneling pucker in some of his tape. Not cracking on him, it is going to happen with this method. When the tape's glue loses its stikum I suspect it will all become water funnels.
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Steve_S
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# Posted: 27 Mar 2016 08:36am
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ZIP is likely better used in a Modular Home Factory or something like that where they can control things better during assembly. As Don highlights, they can be problematic !
There's a housing sub-division built near here 2 years ago... 1/2 the homes were stripped of the green Zip OSB 6 months after being put up and replaced with regular OSB & Tyvek and sided. There was a lot of grumbling workers hangin out at the Country Style donut shop (where I heard their tales of woe). Suffices to say that the guys were cursing ZIPS quite colourfully.
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Jabberwocky
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# Posted: 28 Mar 2016 08:52am - Edited by: Jabberwocky
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Based on my own research, Zip walls can be a shortcut to the PERSIST method. They eliminate the need for an additional peel 'n' stick membrane over regular OSB. There is a slight cost benefit in this particular application. On the other hand, it is more expensive than OSB + Tyvek and if a person isn't insulating the outside of the house, it has little benefit over the OSB+Tyvek and is therefore cost prohibitive.
It's like every single other aspect of constructing a house - attention to detail either makes it a benefit or a liability. If I was building my own house and was responsible for my own quality, I would choose this method. (I'm not a building expert, mind you, only done a lot of research).
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