what is R factor? how do you have UV on the windows? * r. K1 l" q; n" k+ [ChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability. + e: G$ r& e" N a' g( B D7 s3 p: `$ g; Y8 w) F9 g" \8 d
Here in Canada, walls are well over R20. So, even if the exterior walls are hot under sunlight, it won't really affect interior living space. 5 ~5 @6 p$ E- @5 V 8 ^4 a) T3 b! E3 U+ `However, windows have lower R factors and allow UV radiation (and radiation of other frequency) to enter the house. So, it's best to upgrade your windows, if radiation (i.e. sunlight) is a potential problem. Typically, you can upgrade your windows to triple pane, with sun-stop coatings on both sides.
R factor is used to determine insulation capability.6 Q0 U5 R2 u3 A$ a. z$ D4 f9 y
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Here in Canada, walls are well over R20. So, even if the exterior walls are hot under sunlight, it won't really affect interior living space.& y4 h1 z- [" S6 ]! I& B( B
... 8 h) l, O9 R1 @; b" k小黄 发表于 2011-2-18 09:06
7 h& F6 E5 c% w$ wThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? p4 r O+ @9 C' G5 O9 tChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote.: q& l3 P$ [6 c }* d4 A! o# \
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. " J5 k6 c9 N3 I8 ?1 z$ X- NYou don't have to upgrade all the windows. Only the important ones./ _; _6 C% H7 H9 t) M' ~% O
小黄 发表于 2011-2-18 09:13
9 ^, [, s( g) S4 y7 l7 p! X ; ^% L% O6 n. Y6 ]6 Dit must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.