what is R factor? how do you have UV on the windows? - ]" F4 t- S) t9 w* V4 S7 yChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability." f7 m+ k7 ?4 @/ W8 d0 U5 B
9 _: t* N3 ]( H R: x6 k/ [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. ( Z9 Y: d: n* C 0 k! {5 `4 o9 C9 aHowever, 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 9 L# Q+ t3 N1 A% U8 P
R factor is used to determine insulation capability. 6 f8 q. P: R! E5 F. r& x8 g& q: _; v: j6 n! x: L; g! x* ^0 _! S
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 o( K1 k1 v6 T. i( k
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小黄 发表于 2011-2-18 09:06
$ F& ?8 L3 H ]! u$ p' z5 HThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? / z: ~5 j* J r8 c: pChiaPet 发表于 2011-2-18 09:09
/ X( e8 m7 p9 `" aAsk your builder to give you an exact quote. ' y6 V* Z$ K5 q) b- p( v* pYou don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. ( P7 L% t# x ~% ^You don't have to upgrade all the windows. Only the important ones., Y5 p6 g @- K" ^# n5 c0 p+ e
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?& W" x* z4 V: M# N B$ Q+ u$ S
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.