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Homeowner Forum / Construction / May 2006Tape/seal all visquene joints (crawl space vapor barrier)?
This new house I bought has 8 mil black visquene down over a bed of chat gravel (limestone type). The coverage is pretty good, and they used metal U-spikes to join the visquene pieces where they meet at seams, etc. Would it be worth the time to seal the seams better with tape or some sort of sealant? The visquene is attached to the crawl walls via the u-spikes as well (tagged into the sheathing on the block wall). This is a closed (no vents in the block walls) crawl space that is conditioned via HVAC registers coming off the main supply plenum. No return air is drawn out of the crawl for the HVAC, the crawl is simply supplied conditioned air via the registers. Did some research and seem to have answered my own question. Looks like I'll be buying some Duct Mastic and going to work on the seams :~() I found tons of good info on crawl spaces here: http://www.crawlspaces.org Most of the grant money for the research they conducted came from US Dept of Energy. Sounds like they did it right in your place. Duct Mastic is the way to go too. > Did some research and seem to have answered my own question. Looks like > I'll be buying some Duct Mastic and going to work on the seams :~() [quoted text clipped - 5 lines] > Most of the grant money for the research they conducted came from US Dept > of Energy. That's an interesting looking web site. You might want to look at Building Science Corporation web site. In Charleston SC," the low country", with high water table and moisture in general, this is an important issue. Don't forget to seal the poly to the surrounding masonry and consider a relief stack if you are concerned about radon. TB That's an interesting looking web site. You might want to look at Building Science Corporation web site. In Charleston SC," the low country", with high water table and moisture in general, this is an important issue. Don't forget to seal the poly to the surrounding masonry and consider a relief stack if you are concerned about radon. TB |
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