那他家 的房子肯定好啊, ; v6 l- i. W7 Q. ~) r
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冬季能升温 肯定热损失小吧, 夏季肯定就受日照影响小. 夏季屋顶在日照下烫手啊1 R6 p ?( S2 |5 d7 k. L) U
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他家 做了屋顶 肯定好了.& [% E, Y. {$ e5 r* E- S3 O
% Q0 Z, t* R* ~如果没有效果他不会干升级的, 劳民伤财哈, " r* M, a6 `! l) `2 ]' A/ V % H. D/ r, v# p B: |, ^请问 日r20 r60是什么, 厚度还是保温性能?
40% is lost from ceilling. 40% from windows. so 屋顶改进分别对保温性能贡献大. Costed me $2000, because I used the Pink insulation ( usually for walls) at the ceiling. If you use foam that usually for ceilling, then your cost should be only 1/3 of mine. Rent a foam spreader from HomeDepot.