内部蒸汽屏障对薄板岩石或外部抗岩羊毛的护套或两侧？
Ken Swartz.|Posted inEnergy Efficiency and Durabilityon
我在我最近买的房子里做了一个Rehab Remodel，并在房子里露出外墙。我正试图升级现有的绝缘，因为我不得不替换很多框架来修复干腐烂。我正在尝试将墙壁空间中的水分积聚从两个方向尽量减少，并有效地隔离房屋。另外，我一直在公用事业中堵塞。
我正在将Roxul岩棉r23安装到2×6螺柱腔内。我将在其中安装OSB护套，因为这就是工程师需要奠定纯粹的力量。在此之上，我将在护套上安装Rmax Thermacheath-3 2英寸R13.1。最后，我正在为我覆盖房子的灰泥安装防水纸。
我一直在做很多阅读，真的很困惑。如果在放置岩棉后或放置岩棉后，我应该在板岩上安装蒸汽屏障吗？我应该在护套外放置额外的包裹来保护它吗？
最后，有人可以通过其他建议或提示。
Thanks!
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答复
箔r-max Thermacheath-3在小于0.3倍级的测试，这使得它是非常紧密的-I级蒸汽延迟器，几乎是蒸汽屏障，在这种情况下，您不希望内侧也是低烫发，或者它会产生水分陷阱。（湿润的水分永远留下。）
You don't say where you are located, and climate makes a huge difference on whether the 2" polyiso will be sufficient for dew point control at the OSB layer. If the average wintertime temp at the OSB is below the average dew point of the indoor air (about +4C, or 39F for cooler climates) you'll need some sort of vapor retarder on the interior, but not a true vapor barrier. Smart vapor retarders that become vapor open when the moisture levels in the wall cavities are high would work. (Certainteed MemBrain, Intello Plus, etc.) It would be placed beween the wallboard the rest of the assembly in a single air-tight layer.
离开之间的气隙排放是很重要的tucco and the next layer, even with the vapor retardent foam. Stucco hangs onto rain & dew moisture, releasing it in intense bursts when warmed by the sun. Warm stucco that is open to the outdoors at both the top and bottom will convect that super-saturated air to the outdoors rather than cooking it into the wall, as long as it has a convection path.
防水纸（通常是＃15沥青毡）是您的漏水平面和耐候障碍 - 无需单独的家庭包装。但是，您的窗户和门闪烁延伸到防水层是非常重要的，并且被正确地吸收到＃15的外侧，而不是将其朝向泡沫层引导散热。
Based on what you mentioned, I was considering B.O.'s Slicker MAX (yes this site advert got me thinking) or something like it. Do you recommend another product over this type of fiber-based rain barrier?
我住在罗斯维尔加利福尼亚州。
Thanks for the information!
Roseville CA is in US climate zone 3B. In that climate you don't need or want ANY type of vapor retarder on the interior side of your wall stackup with a vapor permeance lower than standard latex paint. (This means no vinyl or foil wallpaper, only latex paint.)
在每个螺柱托架中使用铆接或罐头的铆接或罐头的护套，用填缝（或填缝+胶带）的珠子，密封螺旋墙的双层顶板之间的缝线，底板符合底层等。
您不需要一个用于RAINSCREEN GAP的完整网格层。Affix the foam to the wall with 1x4 furring onto which the metal lath or whatever for the stucco hangs, through-screwed into the studs 1.5" with pancake-head (not pan-head) timber screws 24" o.c., and cut strips of the roll-mesh used for ridge venting on roofs at the top & bottom of each cavity to keep them from becoming critter-condos. It works fine, and provides a generous 3/4" rainscreen for the stucco to dry into. Don't skimp be generous with the ventilation entrance & exit area, both top & bottom.