平整现有的平板基础
I will be installing some rigid foam and two layers of plywood over an existing concrete slab to create a wood floor.
I know this subject has been covered at length here, but I am hoping to get one more knock on the head from the GBAers with a particular detail, which is the leveling of the slab (also covered at length here, I know).
这是一个车库板，形状良好，但倾斜了。（这一切都是在板的外部周围绝缘的，从窗台板和周围的地球有适当的排水距离向下4'向下进入地球）。
I’ve got about 3 inches +/- to make up over a 20’x28′ space (550 sq. ft.)
The obvious thing is self leveler. But alas contractors are booked and I fear the stuff. There seems to be quite a few horror stories on botched jobs and you have to work quick. I’m not sure I can get enough hands to make it happen this fall. And it sounds stressful.
Hence I am considering stone dust or similar to level. I have extensive experience leveling the stuff for ADA trails. Obviously where it is laid thin it will not compact well. But can I get away with this if I work carefully placing the foam over it as I go. Does anyone see potential issues with long-term movement of this shim layer of stone dust? Other issues?
感谢您的想法。
GBA细节库
由气候和房屋部分组织的一千个建筑细节的集合
Replies
泰勒，
我无法就石尘提供任何建议，但是我听说过的另一种选择可能在这里效果很好 -
Commercial roof's typically used sloped foam insulation to point water towards drains. If might be worthwhile to see if that can be obtained. You might get lucky and find XPS insulation that has the right taper to match your garage floor. One layer of that and one layer of normal XPS would have you level, and insulated, without the busy work in between.
http://www.owenscorning.com/networkshare/eis/10015849-foamular-tapered-frofing-products-xps-xps-data-sheet.pdf
I had a thought some time back to do some custom foam leveling. Martin correctly pointed out I may be off my rocker. Pre-tapered would be another story, but the pitch in this case isn't exactly even. I also already have the 2" type IX EPS on hand. Otherwise I'd be about it.
另一个选择是切割经过压力处理的2x4以将斜坡升级。
泰勒，
I've never heard of it being done, but can't think of a reason it wouldn't work, especially with two layers of subfloor.
现在 - VB去哪儿了？哈哈。
失落的m is the VB!
我正在考虑仅将一些聚合扔在木材成品地板上方，以保护所有物体免受室内水分的侵害。
= p
In seriousness though, despite my skepticism and grievance about the lack of agreement and clarity on this issue, I might still lean towards an adhered VB, such as redguard. Then the stone dust-- make sure it's dry--then the eps, taped for extra precaution. Also considering stone dust first, then poly/foam.. who knows
Wood floor over concrete is the riskiest option.
请注意，必须处理与石头或混凝土接触的任何木材。
I got to ask have you done a moisture test on this slab yet?
1.
剪塑料布
Cut clear plastic sheeting into several 24-by-24-inch squares. Make sure the plastic has no holes or tears.
2.固定塑料
将每个塑料正方形张开在混凝土干燥区域上。用胶带或其他防水胶带沿正方形的所有四个边缘胶带。牢固地按胶带，用塑料和混凝土创建水分密封。根据需要使用尽可能多的正方形来测试所有可能获得地板的主要区域。
Tip
Make sure that the concrete where you place the plastic is dry. If it is damp or even darkened by moisture, it will skew your test results.
3.检查塑料
至少等待48小时，然后检查每个塑料正方形。首先，检查塑料的顶部表面，以查看是否有任何水分在其上串珠。这表明空气中的水分过多。接下来，将塑料剥落并感觉到它的底面。塑料内部的水分，以潮湿甚至雾性的形式，表明平板以可测量的数量排出水分。
https://www.thespruce.com/test-concrete-floor-for-moisture-1821688
Walta
No wood will touch concrete. This is a fairly common assembly, though not without it's controversies to be sure.
Not a basement. Will have VB and insulation.
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Why are we getting spammed suddenly?
不知道突然的垃圾邮件发生了什么，但是我希望它不会杀死该线程，因为我有类似的情况，并且很感兴趣地看到您的解决方案。
即使木材在混凝土上方神奇地悬浮，如果您无法通过水分测试，您可能会冒着拔罐，结束失败和腐烂。
Walta
沃尔塔（Walta），您通常反对在此处讨论这种方法的GBA上详细介绍的无数集会吗？最近关于无混凝土板的焦点呢？给你同样的问题？我不确定我在这种情况下了解您的关注。
我仍然在尝试升级器与石头灰尘的尝试。我唯一真正的恐惧是，在多年的人流中，是否可以将石尘振动为不平衡的团块。不知道这是否是真正的威胁。
一种选择是干包。如果您可以将斜率分成4'或8'宽部分，并将2倍撕成正确的高度，那么获得良好的水平应该很容易。您甚至可以将2倍放置在适当的位置。由于需要很长时间，因此非常宽容。您可以在这里阅读有关正确的干包混合的信息：
https://www.johnbridge.com/how-to/deck-mud/
另一个选择是将泡沫直接安装在现有的平板上，然后在泡沫上锥形卧铺，以使地板平坦。如果您的PSI泡沫较低，则可能需要使用更宽的卧铺，例如Flat上的2x3。关于此设置的好部分是，您可以使用单层胶合板进行下层地板。如果它像一个工作坊，您甚至可以跳过胶合板并直接在卧铺上安装T＆G。这样安装的T＆G倾向于吱吱作响，不建议用于生活空间。
That's an intersting option. Would you worry about the wood screed sleepers rotting, or since it's down under the foam etc. do we just call it out of sight out of mind?
https://www.youtube.com/watch?v=9bbvaa7inwe
这看起来像甲板泥吗？似乎他甚至没有使用参考卧铺，但显然有经验。看起来很有趣。
几乎就是这样，但他正在做一些可以用于完成地板的固体。如果您可以将混凝土作为成品表面很好，那么如果将刚性直接放在平板上，则可以做类似的事情。
由于您主要是在寻找水平的表面，并且不在乎完成，或者它是否在任何地方破裂，您就不必做得很好。沙子/水泥比并不重要，水含量也不重要。Drypack是用最少的水含量制成的，因此可以形成形状，您在这里不需要。沙子中的水泥大部分都在那里防止它流动，只要表面大部分是平坦的，泡沫+地板就会掩盖大多数缺陷。
There are many ways to get a flat reference, he is using the a strip of screed that is leveled in one direction as reference for working in the other direction. Wood works well for this as you don't have to take care not to damage your reference strip or wait for it to set. It is easy to slide across it.
P.S. About the only way to level over long distance is with a laser level, even the best box level won't be accurate enough.