what is R factor? how do you have UV on the windows?" I; C- @. \8 ^
ChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability.. R7 Q3 Z/ X3 R& l; G. E
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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. 9 Y: M# W- |4 \ q4 _ ; O8 R9 s6 t( @5 D& Q; g+ x; qHowever, 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 ! s7 T7 [/ M) \# b
R factor is used to determine insulation capability." J1 [' q f0 C4 W; j
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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.: B7 ?2 M6 `. o8 p1 B( w" f6 P+ @
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Thank you for your reply. But would sun-stop coating cost too much?
Ask your builder to give you an exact quote. % f K' f. w2 j" s0 JYou don't have to upgrade all the windows. Only the important ones. h6 |& f5 o* F) ^$ ?% K小黄 发表于 2011-2-18 09:13
请问:主卧,客厅和饭厅朝西, 车库和bonus room朝东好吗?朝西晒的房间,夏天很热吗?( Z6 c: f' @$ Y' M+ E& m L5 }2 K3 ?
ChiaPet 发表于 2011-2-18 08:00
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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.