what is R factor? how do you have UV on the windows? 1 m! Y* B- l2 o5 Q+ c# s% D! NChiaPet 发表于 2011-2-18 08:53
3 w' e* z4 b4 u5 C) B4 FR factor is used to determine insulation capability. * f9 H2 m5 A% S" {. i$ G" t% m* ~, k0 e2 ?$ d$ Z
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. 2 Z/ v' q: ]6 G6 m; v1 u/ _8 |0 Z" S1 l2 z- M3 M7 a. z9 q! U
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.
本帖最后由 ChiaPet 于 2011-2-18 09:12 编辑 3 W& Y2 Y' x$ X. V/ c) H% Y2 ?. z
R factor is used to determine insulation capability. G0 i$ H# B! A: A B " \. D7 e. Z. U+ NHere 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.5 O x% {9 D0 R- {
... ( W) H0 }; S# P7 F5 {( U8 ^1 i5 Y, n* H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? e& }* M3 U% G8 Z/ ]" \6 XChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote.: x) g' @# a& J7 F* q5 h
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. 6 D7 P& X: ?8 Y! p0 X7 jYou don't have to upgrade all the windows. Only the important ones.: [7 b/ y* @8 g. F* d
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?0 u2 ~- I2 t. ?+ `
ChiaPet 发表于 2011-2-18 08:00
2 c i6 y) g. a' g' Q$ u , `0 c7 N4 b' \6 _+ F4 nit must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.