what is R factor? how do you have UV on the windows? C j( T" _, |/ |1 WChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability. / ]5 u) P/ r2 U5 w8 v; Q/ q6 f f N! L7 Z7 q' 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.! a k$ S' D# `- ~' M, N% B
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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 A1 g: h& M* s6 S0 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. # _) V0 E! z" [6 j# m2 B0 ?) h ... 0 \- c% _5 F# }6 C5 R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?
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Ask your builder to give you an exact quote.$ T$ |! q7 W" H5 c
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. 5 |4 o$ q$ l: @1 L) _" u" w* @You don't have to upgrade all the windows. Only the important ones./ d5 b* x8 p% T/ Z
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? / e7 |6 t. E! J. U: nChiaPet 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.