what is R factor? how do you have UV on the windows?! T. P- k' Y, T2 P$ }7 g
ChiaPet 发表于 2011-2-18 08:53
7 |5 A, z. S# h: _" @R factor is used to determine insulation capability. 4 p3 ?* q& ]3 }; W2 b) _: t0 L) W 5 i: Y+ X) |% |! K! T$ Z: AHere 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 _9 l g- F' d9 A0 i4 y6 x4 [
4 B+ p" M5 f8 S' M1 |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. 2 P, `" ?4 L9 ]( B8 g( u4 U * ]; i ~( H# F6 _5 S; n. ZHere 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 u+ G8 Y. _% ~% D/ G, H
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小黄 发表于 2011-2-18 09:06
$ K. f0 r, Z8 o, f; fThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? 9 t4 t8 M1 x9 B- TChiaPet 发表于 2011-2-18 09:09
4 [, w7 S A# l4 s2 D: [- H ~8 G" |" CAsk your builder to give you an exact quote. 1 r/ o6 t$ n( T8 `" E6 u0 XYou don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.9 [: J/ G7 n9 v
You don't have to upgrade all the windows. Only the important ones. 2 U2 m- c) P2 I) D/ R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.