在房子外部装饰刚性泡沫的底部，平板等级
Hello, I live in Maine, I have a stick built with osb sheathing with drain wrap over that. I plan to do 2″ rigid foam on the exterior walls. The house sits on an on grade 6″ cement slab with a 4.5″ pressure treated sill. There will also be 3/4″ strapping with clapboard siding. I am lost as to how I trim out the bottom of the whole ordeal.
我计划将我的壁板8“从地面上保持一致，以满足代码，因此泡沫将被暴露。此外，错误可能来自下面。我也没有看到某种预制滴度，以便在泡沫之前沿底部放置。
Then there is the thought of how do I cover the seam of the sill to the cement slab.
是否明智也会添加更多泡沫，进入地面，以绝缘水泥板的侧面？
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Replies
凯伦，
In your climate zone, the building code requires at least R-10 insulation at the perimeter of a slab on grade. The insulation is installed vertically. So, yes -- you need to install at least 2 inches of rigid foam insulation -- more is better -- at your slab perimeter.
该泡沫绝缘层可以与您计划在OSB墙体护套的外部安装的刚性泡沫相同，只要您的OSB与您的板式共同平面。（否则，您可能需要向其中一个泡沫层添加1/4英寸粉丝绝缘，以使它们共同平面。）
刚性泡沫，绝缘板的边缘需要免受物理滥用和紫外线的保护。这是通过以下产品之一完成的：
A cementitious coating or cementitious stucco (for example,Styro Industries Brush On ST), with or without metal lath
A cementitious coating that includes chopped fiberglass (for example,Quikrete #1219 foam coating要么surface-bonding cement)
丙烯酸涂层如Styro Industries Flexcoat要么Styro Industries Tuff II
EIFs（合成灰泥）
水泥间隔板，有或没有灰泥层
压力处理的胶合板
金属闪光
玻璃纤维面板如地面破碎机来自NUDO产品
Styro Industries FP Ultra Lite Panels（XPS涂有矿物颗粒粘附在一侧）
Protecto Wrap Protecto Bond（柔性剥离膜，带有纹理，坚韧涂层）
Proguard CEMED面临绝缘护套。
如果由于某种原因需要在没有基础泡沫的家庭上修剪泡沫护套墙的底部，您可能会在制动器上保护泡沫的泡沫底部。要了解更多有关此详细信息，请参阅此GBA视频：How to Install Rigid Foam Insulation Outside a House.
Just a few comments:
First, if you want rigid foam over stick build it Maine, you probably want more like 2 layers of 2" rigid foam over assumed 2x4 or 2x6 insulation -filled walls, instead of just 2 inches, total. Read up on it.
其次，凯伦，你和很多其他人需要阅读和研究你的设计问题，放入一点工作，而不是采取简单的方法，而不是追求答案，而是在盘子上为基本问题提供了答案，而是你的所有问题之前已经在这个网站上回答了。做搜索。
凯伦，
It's OK to ask questions. Sonny was trying to point out that exterior rigid foam on above-grade walls needs to meet certain minimum R-value requirements to avoid moisture accumulation in the wall during the winter. Everything you need to know about that topic is explained here:计算刚性泡沫护套的最小厚度.
Thank you Martin for your response. I have researched this topic for about one year very extensively and understand the more rigid foam the better, but in climate zone 6 I only require R7.5 to ward off condensation. I actually only require an R21 total to meet minimum code up in Maine, just between the studs. Since this is just a converted garage, I don't feel it necessary to have 4" of foam on the outside at this time.
至于防水底部，我猜我将使用闪闪发光的丁烯，使水从底部进入排水霜，然后在泡沫中嵌套的蚂蚁，我仍然不确定。
对于这种外部泡沫细节，似乎没有伪造的信息。泡沫将花费大约1,500美元，所以我想确保我正确地为我的申请做了它。
我唯一提出的解决方案是购买门窗屏幕，并将其包裹在地下下方的泡沫周围。
凯伦，
You wrote, "I guess I will use a butylene flashing to keep water from getting into the drainwrap at the bottom and then as for ants nesting in the foam, I am still not sure."
你还写道，“我想出的唯一解决方案就是买门和窗口屏幕，并在地下下面的泡沫周围包裹它。”
If the "drainwrap" you are talking about is a wrinkled housewrap on top of your wall sheathing, you don't want to seal up the bottom of the drainwrap. The housewrap should lap over the top of a metal flashing, and the flashing should extend past the bottom of the rigid foam and terminate at a drip leg at the exterior of your house. This flashing is bent on a brake. It will protect the underside of your rigid foam.
I wouldn't expect buried window screen to keep insects out of buried foam. First of all, most types of window screen with corrode or rot when buried. Second, insects can find their way through tiny cracks. If you are really worried about insects, you should order some borate-treated EPS.
哇，我应该在排水霜的底部录制到闪光吗？我总是假设排水套应该紧绷到护套，而不是使水排放到包裹和护套之间的底部的方程的一部分。
我在沙子上有一个重大的蚂蚁侵犯我的车库坐在上面。我想我可以机会，看看会发生什么。我不认为我会赢得对抗蚂蚁的战争，不要批准农药灭菌（硼砂或硼酸硼依赖性可能是可接受的）。
谢谢你所有的信息,它是如此应用reciated to clear up the little details I could not figure out with reading.
凯伦，
Every wall needs a water-resistive barrier (WRB). It is required by code, and it is a good idea. I assumed that your wrinkled housewrap was your WRB -- but it doesn't have to be. To learn about all the various options, see所有关于防水障碍.
Most people who choose a wrinkled housewrap hope that if any liquid water ever reaches the housewrap, it will be able to drain downward along the wrinkles. (Whether this ever happens or not is a different story; however, it doesn't hurt to allow for drainage.) That's why the wrinkled housewrap should lap over the flashing at the base of your wall.
A simple lap of about 4 inches is all you need. There is no need to tape the housewrap to the metal flashing.