How do you insulate a crawlspace with dirt floor?
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How do you insulate a crawlspace with dirt floor?
We have a cottage with a crawl space near Halliburton, Ontario,Canada. It has a solid block perimeter but has a dirt floor. Also, there is a very large rock under the cottage which makes the crawl space uneven- ranging from 2 ft to 4 ft high. We have aluminum vents in the block foundation that slide open with a little screen. We have rigid foam panels on the concrete block walls (2 inch) The cottage is 900 square ft. To complicate things, we have just made a 400 square foot addition on concrete piers which is also not insulated.
目前，我们有一个从湖中抽水的水泵。我们在冬天关闭了小屋，并在这个季节排水，我们想要隔离，并试图使它成为一个四季小屋。我们不确定是否我应该绝缘的天花板的爬行空间或只是试图得到一个地板。有人说我们可以用泡沫隔热材料喷在泥土地面上，这样会变硬。
We are currently power venting the crawl space to protect against radon gas. What would be you be advice as to how to proceed for insulation/winterization/moisture?
At this point, I’m thinking to simply put a 6 mill poly on the dirt floor to keep the moisture out and to put rockwool in the ceiling of the crawlspace with no Vapor Barrier…. we would very much appreciate your input and advice.
Cheers, Sal
The first thing to mention is thatif you have an uneven surface of solid rock in a basement or crawlspace you are at risk of radon gas contamination所以现在发泄是好的，但我会想出一个长期的解决方案。The whole Ottawa Valley area of Ontario is unfortunately a real hot spot for radon gas in homes, so see our pages onmitigating radon gas in basements, includinghow to remove radon gas from well water，以防你将来挖井。
打开爬行空间的通风管道并不是一个好主意，因为那里非常凉爽，在夏天吸入温暖潮湿的空气时，它有在凉爽的表面凝结的风险。所以我会考虑一个氡气排放的解决方案然后关闭通风口。Once you've done that, keep an eye on the humidity levels and keep a dehumidifer running down there if necessary.
Applying spray foam to the dirt floor of your crawlspace may be one of the easiest and most effective solutions, and if so, then you would be best not to insulate the joists over your head and just heat that space instead.See here our page on How to insulate a crawlspace floor, and please feel free to ask more questions if you are still stumped on what is the best solution. At the very least, laying a 6 mil poly vapour barrier will keep the moisture down.
For the addition that is on concrete piers, if that means air (and wildlife) are free to travel underneath it, then you could consider spraying the underside of that if you have a spray foam contractor there anyway. We would recommend you look for an installer than has switched to thenew spray foam blowing agents that have lower greenhouse gas emissions. Spray foam will act as an air and vapour barrier but it it is pretty easy for critters to dig into it, so you may also want to tack up something like a diamond lath underneath to keep rodents out.
至于你对氡气的担忧，这只是你的常识，还是你已经进行了氡气测试，发现它很高?I had high radon gas in by basement and so I installed aradostat that monitors radon levels and activates and HRV when the levels are too high.
Hi Emmanuel!
CAn this insulation be used on dirt crawl space floors?
Thermoquiet , Thermal Acoustic Insulated Underlayment