What is the best way to insulate a slab on grade?
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What is the best way to install slab on grade insulation?
paul fowler
Aug. 26, 2021Last updated: Aug. 31, 2021
I am planning on building a small house 35 x30 that will sit on a slab on grade. I'm planning on installing some kind of wood floor so my question is. Would it make any sense to install rigid insulation between 2x3 every 12 inches and cut down on the amount of insulation under the slab? Also, how do feel about using this 1 1/2 inch space to run pex and electrical wires if needed. I only discovered this site yesterday looking for information on slab on grade, a lot of really good information here. Thanks
No, I would stick with below the concrete. You are simply adding work and cost for no particular value.与使用完全不同的绝缘方法相比，增加子板EPS泡沫绝缘所需的劳动力微不足道。I would first point you to this page -
Slab on grade technical guide
We have other pages on slab construction as well that are worth looking at, you can find them if you enter slab on grade in the search bar at the top.
至于你的Pex管和电线，我会把它们放在管道里，直接插入EPS泡沫底部。至于地板，如果你做得好——意味着足够的隔热和防潮——你可以把木头直接铺在平板地板上。确保它是工程木材，而不是实木，因为实木会有更高的风险罐或翘曲，因为任何水分留在板。只是一定要检查木材制造商，它是合适的。
Remember that there is a lot of water in concrete, so wait as long as you can to let it dry, and if possible try to cure first. If you are installing radiant heating in the floor it would good to run in for a week or two to dry the floor before you install wood.
Mike
Under the slab, it is, makes sense for the reasons you listed. The conduits suggestion is a good one also, i can use that. Thanks for taking the time to reply to my question, appreciate it
Paul
Happy to help Paul, good luck.