what is R factor? how do you have UV on the windows? . ^2 h8 f# Y y I7 zChiaPet 发表于 2011-2-18 08:53
4 a5 z) _1 P" {* s! _R factor is used to determine insulation capability.0 C4 t' E. C$ V1 Y
: `! Y8 y9 J5 ~ H2 YHere 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. 7 C4 [. ]/ z. Z/ p' B$ {# Z 2 B* K; [1 t2 n5 \$ m) _( [7 hHowever, 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.
本帖最后由 ChiaPet 于 2011-2-18 09:12 编辑 - c8 e; V; D' z. U' h: D
R factor is used to determine insulation capability. + y# m+ b+ S& Q. `- B ) A7 z. o- Q5 T7 Z. sHere 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. : U2 ?# [9 r& S, ?, J6 @ ...8 k! V' l8 I0 X4 n v8 u g5 F
小黄 发表于 2011-2-18 09:06
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Thank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much?8 m2 t- k R# I1 ]
ChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote. 9 r# r5 v* n sYou don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. 3 ^. `* Y% O! CYou don't have to upgrade all the windows. Only the important ones.6 @- c0 f" k, }# v+ j7 d
小黄 发表于 2011-2-18 09:13
: S; F9 }/ |4 Y' _ 6 f _! l' m, [& J5 S5 T$ m6 Dit must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.