what is R factor? how do you have UV on the windows?7 s. r j e7 M( W8 f9 u* f
ChiaPet 发表于 2011-2-18 08:53
9 c1 u9 a0 J3 b& ]% JR factor is used to determine insulation capability. A- K. f' f6 X) H- z6 R- t+ g% Y
- Q2 Z. C1 B4 O/ p5 [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. 9 y/ U/ ?+ R& M8 ^ 0 p+ p0 h' X! x1 ^( @% ^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. , g5 {! E1 O4 r e1 n8 m. J1 `: c' D: _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. 3 m. G8 S' v# g6 A, { F+ m" j ...0 \( j2 d- ` }
小黄 发表于 2011-2-18 09:06
6 \1 s0 G4 [* l& |6 _! E8 k$ lThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? 9 X$ F, n: H9 g8 H2 zChiaPet 发表于 2011-2-18 09:09
& | `. U* f' @0 @0 h8 C" {. ~Ask your builder to give you an exact quote.1 c1 B- R- i8 z! a ?, v0 ]2 J
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. 2 T9 g) p+ R6 f5 X7 f$ C! vYou don't have to upgrade all the windows. Only the important ones. + G! i" {3 S# A5 l2 e4 P小黄 发表于 2011-2-18 09:13
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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.