what is R factor? how do you have UV on the windows? 7 `: `5 k1 ]# Y* K. Z- UChiaPet 发表于 2011-2-18 08:53
1 _/ ]# S1 v& E3 r( \R factor is used to determine insulation capability.! C. S' W) R. w
4 H& s/ V( S2 e" Q: y6 gHere 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. # e0 B) E7 Q& ]2 v; ?' e2 p4 a" Q
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.( Q. I+ j2 o* w# V0 G h
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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.- p& {# D7 J0 O( |3 `9 O
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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?) E3 F- w H. B6 _
ChiaPet 发表于 2011-2-18 09:09
`. h) Z$ B3 l2 h k# @# x) QAsk your builder to give you an exact quote.5 D" Z6 s/ V/ H; w) R3 i5 I$ D+ b
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. 3 N# }) r+ L8 H" f3 q8 {% s2 k: xYou don't have to upgrade all the windows. Only the important ones. . X! W9 H0 c# Z9 Z! Y小黄 发表于 2011-2-18 09:13
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it must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.