what is R factor? how do you have UV on the windows? 4 k9 j: ]0 c, i: n& gChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability. : W# R9 G$ H0 f. N8 ~ ^$ o) F- L3 _) o) x
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.( D! T+ c0 F6 i& j1 L8 e
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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. m% \% B4 ]7 m' \ & M0 W" v% U; P f9 Z) |: XHere 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.& ~ Q6 E2 }4 v; A" L
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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? / V, X$ ~/ p0 n! V/ B' _1 JChiaPet 发表于 2011-2-18 09:09
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You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. & P" k2 N/ y1 F! M* vYou don't have to upgrade all the windows. Only the important ones. ) W, }7 h% L" j4 _( P7 x; X; V4 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?" k! P/ p% e: b' j8 o! K
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.