what is R factor? how do you have UV on the windows? 0 [$ k; p, x8 D) }" @" e" FChiaPet 发表于 2011-2-18 08:53
- f4 R1 s' A1 o0 \R factor is used to determine insulation capability. 2 B' y4 O% p! F h" o/ ]' B7 {( s8 C% T9 J: y5 _, G( 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. . W) L# {% _) |. B) i' y6 L # [# |+ P) f6 m0 k. t rHowever, 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. 2 p+ y5 {2 v" a5 F& `2 [% \' \4 t# o/ U
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. 4 f- D! a3 U- g/ w) T ...5 g5 t: x6 Z) I+ a' |) U; ]2 z e
小黄 发表于 2011-2-18 09:06
3 r$ T7 _* @5 {4 ~! {8 G' oThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? 8 A2 X2 d. g7 t- C6 zChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote.5 H V, i. k8 e- C' O
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.3 t! j+ c: k# o0 r! v3 {
You don't have to upgrade all the windows. Only the important ones.; h, v: O x; e3 r
小黄 发表于 2011-2-18 09:13
- j6 ^, h8 e* x9 q( M: ^4 f / v- K2 F4 O# ^3 }it must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.