Six Rules for Polyethylene - Fine Homebuilding
To control the outward flow of water vapor through above-grade walls, cold-climate builders in the U.S. can use kraft facing, vapor-barrier paint, or a smart vapor retarder like MemBrain. (For more information on smart vapor retarders, see “Smart Vapor Retarders for Walls and Roofs.”).
Adhesive for Polyethelene Vapor Barrier - Fine Homebuilding
2005年10月14日 · I have recently installed a vapor barrier of 6 mil polyethylene sheeting on the dirt floor of my crawl space. I have wrapped the sheeting up the concrete block walls about 12″, and I would like to seal the top edge of it to the walls with some type of caulk or adhesive.
Vapor Barriers Are a Good Thing, Right? - Fine Homebuilding
2010年8月17日 · The illustration within this article is only half the story as we go from a winter to summer situation. This process of causing condensation by hitting the dew point can occur in either direction so the idea of creating a vapor barrier out of a single layer of poly sheeting should be actually on BOTH sides of the insulation layer.
Vapor Barrier Under Footings - Fine Homebuilding
2000年6月16日 · Multiple layers including mylar and HDPE. I'll see if I can dig it up, but any civil, environmental or landfill engineer might know.I like your idea of lapping the footing vapor barrier under the crawlspace vapor barrier. I'd use the (red) vapor barrier tape that usually goes just behind the drywall. Very sticky and vapor tight. -David
Plastic after insulation or no? - Fine Homebuilding
2002年5月22日 · Where vapor retarders are required, 4mil will be ok. Every insulating contractor I've talked to tells me they would use nothing but kraft faced insulation in their own home. Plastic has a history of causing moisture problems. Just ask remodlers, they will tell you about wet walls opened up during heating seasons when plastic vapor retarders are ...
vapor barrier - Fine Homebuilding
2012年10月2日 · We just bought a home built in the early 70's. We were replacing some of the subfloor prior to getting new carpet and discovered the vapor barrier thick plastic is sandwiched between the lower and upper sub floors. Is this ok. The house seems to hold odors and I didn't know if this was an acceptable construction practice or cause for concern ? The laundry room …
Foundation Air and Vapor Strategy - Fine Homebuilding
The continuous barrier will help prevent vapor diffusion upward from the ground to the concrete. The plastic is held in place by the pressure-treated 2×6 plate along the perimeter. (As I mentioned in a previous blog post , the 2×6 also prevents the slab edge insulation from rising up …
Plastic vapor barrier in a roof? - Fine Homebuilding
2004年11月1日 · A plastic vapor barrier won’t help you in the first case, and it definitely can make the second worse. Oregon building code considers R-30 a minimum for sloped roofs, which is difficult to achieve with fiberglass batts unless the rafters are 2×10 or larger.
Waterproofing with plastic membrane behind durock or durock …
2014年8月24日 · It's perm rating is 1.247, too high for it to qualify as a vapor barrier. That's why if it's used in a steam shower as a waterproofing membrane Laticrete specifies you still have to use a vapor barrier to contain the moisture drive from the steam generator. Hydroban is not a vapor barrier. Jeez, I'm not trying to pick a fight. The guy asked a ...
Tyvek or Plastic VB - Fine Homebuilding
2007年3月1日 · As the topic of your post implies, you need a vapor barrier on the inside of your walls. Tyvek does not a vapor barrier make. To the contrary, Tyvek is designed to allow water vapor to pass through. I'd suggest you use 6 mil poly, caulked at the margins and taped at the seams. Mike Hennessy Pittsburgh, PA