what is R factor? how do you have UV on the windows? + A- \0 N( W" t7 o& M- r+ rChiaPet 发表于 2011-2-18 08:53
9 i, P$ B ~" H/ E+ @4 a3 uR factor is used to determine insulation capability.8 c% P" N( g# \# d4 w% b
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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.8 e% n" X2 ~4 I5 r* f
/ {0 Z0 v6 v$ ~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 + E; ?5 r; a. b0 C
R factor is used to determine insulation capability. 0 [, S& [, W7 t8 L/ X6 D' i* K- H1 X+ m5 o& a5 ~
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. 0 y2 k4 t& c' O: w ... 7 ~$ d3 Q7 E2 [8 x; ]小黄 发表于 2011-2-18 09:06
5 v ?% {/ \ v F! {5 i, x MThank you for your reply. But would sun-stop coating cost too much?
Ask your builder to give you an exact quote.4 C3 h% Q( T. @+ n5 H+ N
You don't have to upgrade all the windows. Only the important ones.& Y1 \+ ~3 o' R* d% f' F
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?+ H5 I; ~ v. x% H! e5 j3 t9 ?) n
ChiaPet 发表于 2011-2-18 08:00
1 a, k) i+ _/ F; v# K/ [( [ 5 y+ N! }4 j3 Y* O. \it must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.