无霉的地下室地板
你好，
大约一年前，我们在加拿大雪地买了一所房子，直到发现地下室到处都是霉菌。在混凝土墙壁和地板上安装了一个蒸气屏障，形成了冷凝和模具节…
We are now at the stage where the basement got demolished, mold removed, all tests good to start rebuilding properly. Nightmare is over but we don’t want another one!
我的问题是相对于地板。这所房子是从60年代开始的，因此混凝土板下没有蒸气屏障。我没有从高地下水位或其他水中进出的水问题，但我知道到达水分将是一个问题或挑战。从我阅读并被告知到目前为止，一个选择是将瓷砖放在平板上，它的水平对瓷砖还不错，但是这里和那里有一些裂缝，所以我害怕瓷砖破裂。我不想使用ditra为塑料，我害怕下面的霉菌。我还被告知要用胶合板做一个凸起的地下，但每12英尺都有开口，以使空气流出和水分。我在这里读到的板上使用了完全粘附的水分屏障，这是有道理的，因为没有气隙意味着没有模具，但是我如何在那上面建造地板呢？
Final note I don’t have a lot of head room in that basement so even if no possibility of mold is the number 1 priority after what we’ve been through, the second is head room, third is cost.
Thanks in advance for helping us!
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Replies
If water condenses on the floor and keeps things moist, mold will grow on just about any floor using dirt as a food source. There are paints with moldicide (not sure if that’s a word) in them.
您可能需要考虑放下易于清洁的东西，例如环氧地板。随着地板的流动，环氧树脂相对便宜，它很快就会下降，而且很容易清洁。任何模具都可以用一些消毒剂擦掉，您会很好。
账单
嗨，比尔，我会选择更好的东西，因为地下室会有一个家庭房。一些专业的环氧饰面非常好，但我认为粘附受到板的水分影响。
您是对的，霉菌不需要太多，这就是为什么我们正在寻找没有气隙的选项的原因。
考虑一个完全粘附的涂层，未取代的EPS泡沫，Hardibacker，Tile。不要在水分陷阱中使用木材。
嗨，乔恩，您是否有完全粘附的涂层的例子？那是像蓝色皮肤一样的膜，否则或液体。我有大约1000平方英尺的覆盖，因此，只要它可以完成所需的工作，就可以寻找最简单，最经济的。
杰夫，霉菌通常需要水分和高于50°F的温度才能生长。当地板足够冷时，水分会凝结。因此，如果没有液态水的来源，您只需要保持地板足够温暖和/或空气干燥，以至于水分不会从空气中凝结。
Without insulation, the floor surface is probably about 50°F, which will create condensation if the air is 70° F and 50% relative humidity. If you have even just an inch of insulation on the floor, the floor surface will be very close to room temperature and should not allow condensation unless humidity levels are very high. Or if you keep the air at 70° and below about 30% RH you should not have a problem.
The easier of those two options to maintain is likely adding insulation. Even 3/4" will probably be enough. Over the foam you can float two layers of 3/4" subflooring, with seams staggered and overlapped, use any tile underlayment you want, with a total buildup of less than 3". If you have a perimeter drainage system you can leave small gaps between foam sheets (3/8" or less) which will allow water to drain without affecting thermal performance.
对于天花板的高度，我在完成地下室时要做的一个技巧不是降低地板托梁下方的天花板，而是从托梁底部约1/2“至1”的托梁之间安装面板。这会产生更多的净空和一些视觉兴趣，有助于掩盖低天花板。大而单片的天花板总是比被细节（颜色和照明差异）分解的天花板低。
Hi Michael, If I was to do as you suggest with a subfloor I might do vinyl planks instead of tile. Tile was really our option if straight on the slab. I assume then I would put only 1 layer of 3/4 subfloor? By the way love the idea of panels between joists, I would go with drywall unless you have other ideas.
Thanks again to all so far for the help
Jeff, you either need two layers of subfloor or you need to interrupt the foam with sleepers. Here are a couple of articles that explain the concepts. They are behind paywalls but have been influential pieces.
https://www.finehomebuilding.com/2005/03/01/the-no-mold-fined-basement
https://www.jlconline.com/how-to/foundations/a-basement-floor-without-concrete_o
在您的情况下，我一定会在泡沫上添加一层多板。
I'm glad you like the idea of panels between joists. Drywall would be the least expensive material. Once you factor in labor, you might decide that cabinet-grade plywood, PDF or similar would be easier, but there's nothing wrong with drywall in that location. Hopefully most of your wires and plumbing are run through the joists rather than below the joists.
如果你是某些水feedin的唯一来源g the mold is from water condensing out of the air and condensing on the floor a large dehumidifier set to 50% RH connected to a drain should keep the mold at bay at about $25.00 a month to operate.
我不确定您没有Leakey的墙壁和地板。在60年代，地下室板直接倒在泥土上。今天，我们将拥有几英寸的砾石和一个塑料蒸气屏障。多年来，墙壁上的水质质量和数量有所改善。您可能没有下水道。
沃尔塔