Floating plywood floor on rigid foam insulation on concrete?

Philip Koepf|发布了GBA Pro Help在December 14, 2011 08:36am

我正在向一块板坯提出一个板坯的一个项目，其中2英寸的泡沫在平板下，1/2“或2英寸的泡沫，在板上的泡沫，3/4”T＆G胶合板或OSB地板。我想漂浮胶合板，而不是使用熨平板来最小化热桥。内墙都是非轴承，所以它们可以固定在胶合板上。我确信这不是一个原创的想法，所以我想知道有人是否已经尝试过这个，并且可能是下行问题的问题。

回答

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GBA Editor

Martin Holladay|Dec 14, 2011 09:43am|#1

Philip,
1. Why not put all of the rigid foam under the slab instead of putting some of it on top?

2.如果你真的想把一些僵硬的泡沫放在板上，这里有一些链接向您展示别人如何做到这一点：

Fine Homebuilding: The Stay-Dry, No-Mold Finished Basement

Fine Homebuilding Q&A: Finishing a basement floor

GBA Q&A: Basement floor insulation retrofit
Philip Koepf|Dec 14, 2011 10:20am|#2

Thanks. I guess the short answer for the concrete sandwich is that it is more comfortable for the occupants to stand on a wood floor rather than concrete. Just that little bit of give in the material seems to make a difference. I have no specific data on that just my opinion. Thanks for the links. I read though them and I think the trick is to have some way to tie the pieces together.
Expert Member

Kohta Ueno|Dec 14, 2011 10:49am|#3

我肯定会同意马丁 - 将所有泡沫放在板下是优选的，更少的工作。一些朋友和我最近在地下室工作，在那里我们沿着这些线路做了一个装配 - 没有现有的地下室板材绝缘。原始设计意图是1“XPS，带有胶带接缝，聚乙烯，3/4”T＆G胶合板“浮动”。然而，我们发现胶合板卷曲或“薯片碎”过多，我们必须将其用塔皮斯固定在混凝土中，每4x8张约6张。请注意，Tapcons不会自检 - 您需要钻取浓度才能让它们刷新。也许你可以用两层3/4“或1/2”胶合板来做，但在那一点上，你就陷入了非常荒谬的材料，以便只为一点垫子躺下。

As an FYI, our recommendation for an ideal slab can be found at these web pages:

http://www.buildingscience.com/documents/insights/bsi-001-the-perfect-wall
http://www.buildingscience.com/documents/insights/bsi-003-concrete-floor-problems/
Philip Koepf|Dec 14, 2011 11:30am|#4

Thanks again. I was hoping that someone had installed this system before without issues but I suspected that the potato chip effect might be a problem. I don't want to go there. I think I will explore the foam fastened down with screeds and then plywood or maybe just put all the foam under the slab. The other issues with the concrete slab on top is the sheet vinyl they typically use in the kitchens and baths. The low VOC adhesives just won't work on new concrete without much fussing around.
理查德帕特曼|Dec 14, 2011 12:00pm|#5

You might also try two layers of 7/16 OSB with staggered joints both directions (glued and screwed).
不太可能卷曲，而不是比3/4't＆g更昂贵。
Philip Koepf|Dec 14, 2011 12:10pm|#6

Thanks again.
Keith Gustafson|Dec 14, 2011 12:12pm|#7

有一个地板产品是一种粘合剂和蒸汽屏障，即我没有指尖的名称，桶在车库里。

I used that and then discovered a wonderful tool called a "T nailer"

空气动力混凝土钉，工作很大，但你必须拥有正确的长度指甲，因为它们不会驾驶超过1/2英寸左右。比框架的钉子大得多，但你可以一分钟驾驶20个钉子而不是20个小钉。非常适合这个应用程序，在那里你真的只是拿着胶水干燥，如果它失败。绝对喜欢这件事

Insulate under tho....
John Klingel|Dec 14, 2011 01:46pm|#8

I did exactly what Richard P suggested, 11 years ago in our basement bedroom. Were I to do it again, I'd use plywood instead of OSB. No issues have as yet surfaced.
Philip Koepf|Dec 14, 2011 02:19pm|#9

This is awesome. The first time I have ever submitted a question to a blog and you all have been hugely helpful. Hope to return the favor at some time. Philip
Dave Cummings|Dec 14, 2011 08:24pm|#10

就个人而言，我将在下面的绝缘材料放置以保持热质量。然后挤出一个厚厚的PL胶12“在中心。这将消除未来的混凝土并拯救捆绑包。用贝拉克完成胶合板的下侧。
Keith Gustafson|2011年12月16日03:39 PM|#11

I think the product was 'Dritac 1001' but will double check

[edit 12/16] that is in fact the stuff, seems to work great