地下室墙面的EPS泡沫保温层应该有多厚?
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地下室墙面的EPS泡沫保温层应该有多厚?
Derrick R
March 17, 2021Last updated: March 22, 2021
我正在研究在装修地下室时应该使用哪种硬质隔热材料。我在一个eps绝缘制造商的网站上，在他们的技术/规格部分，这种特殊的刚性面板，它说1”的蒸汽透气性是0.5烫发。使用1“面板而不是推荐的2”是否足够?
EPS rigid foam insulation is made of tiny foam beads squished together, so there is a continuous path between the beads where moisture can move, but the rate moisture will permeate is reduced by increasing thickness.
I wouldn’t be in a position to speak to what performance statistics an individual manufacturer claims on their site, but the generally accepted permeability of foam is that at 2 inches it performs about like a Type II vapor barrier. Read more here about the characteristics and applications of different types of foam insulation, as they are all a bit different and not all great for the same purposes –
Choosing rigid foam insulation panels, which is best?
你是否有空间限制或预算限制，让你倾向于1英寸?既然你将努力添加刚性板绝缘，我将做更多，如果你可以。2英寸或2英寸以上会更好地防止水分移动，也会节省额外的热量。反正你也会惹上麻烦的。
Thank you for your insight. Obviously I don't want to spend more money than necessary so if the 1 inch was sufficient that's what I would choose. But if minimum 2 inches is what's suggested then that's what I'll go with. Thanks again!
Happy to help Derrick. Worth considering is that if you are in a cold climate, then the added investment of going from 1 inch to 2 inches will pay for itself in a few years at most in heat savings, if not even in the first year. I'd do it anyway for the moisture though.