网状雨屏产品和灰泥
My usual stucco guy has some major issues with mesh rainscreen products like Home Slicker and the like. (I haven’t known enough until recently to insist on using one.) He’s always done two layers of felt, staple up lathe, three coats of stucco, and paint.
我知道我会得到的第一个建议是找到另一个灰泥家伙，但请听他说。他被要求重做六个工作，因为灰泥从屋子里掉下来，因此使用了网状雨。就像，所有这些。他说，问题是钻石的网状狗狗，并防止灰泥穿过足够的车床以抓住。
他还报告说网格使灰泥干燥而不是治愈。这些家伙从凌晨5:00开始，因此灰泥尽可能长的时间保持湿。他是工匠，所以我不愿意争论，除非有人给我准确的弹药。另外，如果不是网格，那么什么？先感谢您。
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答复
Johanna,
Traditional stucco installations just have too high a failure rate to use them today.//m.etiketa4.com/article/to-install-stall-stall-stucco-right-include-an-air-ap
I'm sure your stucco guy is a great craftsman, but that doesn't in any way change how the stucco will affect the wall behind. lf he is uncomfortable with mesh rain-screen backing it may be because he isn't using a paper backed lath which would avoid the mesh "pooch(ing) into the diamonds".
Here are three options you may consider:
- The gold standard of stucco walls would be one which has a rain-screen cavity formed by vertical strapping, a substrate of cement-board or DensGlass, lathe, and stucco.
- 纸衬板可以直接固定在没有衬底的情况下，然后施加灰泥。
- A mesh rain-screen used in conjunction with paper-backed lath.
It would be interesting to hear other posters and your stucco guy's opinions of these assemblies.
您正在建立世界的哪一部分？您描述的组装，没有雨灰泥的情况通常在该国的沙漠地区很好。它可能不会持续一百年，但是如果做得正确，则可以。如果您在其他地方，则是的，您可能想要那盘雨。
What it sounds like your stucco contractor is basically complaining about is that the mesh rainscreen is making it hard to install the lath normally. You need an extra deep furred lath so that the lath extends beyond the mesh. One possible thing that might help would be to put a layer of Grade D building paper (or cement board, which is more common in commercial) over the mesh, then put the lath on (again making sure it is furred out past the paper, you want the lath to be more in the middle of the scratch coat, not behind it). Something like structawire structalath may work well, it could make it easier. You can put together a sample with your proposed materials to make sure they are working together properly.
If you are looking for an alternative to the mesh, you could look into delta-dry & lath or Delta-Dry Stucco & stone. It is a dimple mat rain screen with built in lath. It is probably the simplest solution to your problem.
雨屏产品的好处是减少了人工成本。毛茸茸的和施加第二层的护套将非常密集，当我运行数字时，更昂贵。已经讨论过商业/更深的车床，并增加了灰泥成本很多。当然，我的家伙讨厌纸的车床。你们都如何看待像灰泥的MTI重力腔？我提出了这一点，现在Dorken Dry＆车床。迫不及待想听听他对这两个的看法。我在北卡罗来纳州的阿什维尔，那里的人们不花太多变化...
Johanna,
I can't be off much help. Both stucco and EIFS virtually disappeared here in the PNW once rain-screens came in about a decade ago.
纸张的板条通常几乎没有毛茸茸。这就是为什么人们倾向于避免它的原因。
重力腔看起来与三角洲干产品相似，但没有集成的板条，因此需要额外的步骤。我无法想象为什么两种方式都无法正常工作，只是取决于最适合您的东西（可用性，成本，易于安装等）。
Personally I've looked at using rainscreen products many times before but I've always decided against it due to cost. Then again I build in the desert and it's really not necessary.
无论您身在何处，都很难让承包商做新事情。即使有了我自己的家伙，教他们新技术或思考和接近事物的方法也可能是一种练习。无论如何，预算额外的时间，成本和材料，让您的灰泥家伙学习一些新东西。仔细检查它。
In case anyone is interested in our solution… We opted to go with MTI’s gravity cavity product. This wasn’t without issue. The house has board sheathing, so we needed an advanced WRB. Unfortunately, we had already applied one that was not compatible with a million staple holes though our salesman originally claimed it was. Thank goodness we tested our assembly. We switched to a self-adhered membrane that seals around small penetrations, installed the MTI and got a new stucco guy.
Johanna,
Thanks for c0ming back. It's always interesting to hear how things turned out - and it sounds like they turned out well.
I thought I read that the 2018 IBC requires ventilation behind things like stucco. If it does say that (I don't know for sure), does the typical two layers of felt count (it seems like it shouldn't but I don't know)? My thinking even if it's not what's enforced in your region, the fact that it's there (again assuming I read it correctly) could be a data point for arguing for it.
I'll be in a similar situation in probably 6 months or so (in zone 2), so I'll also be interested in hearing the results. I've been trying to be as informed as I can be (hopefully so I can ask the right/good questions).