what is R factor? how do you have UV on the windows? ( E" T* O& z9 C' o& {+ x% TChiaPet 发表于 2011-2-18 08:53
, N, ]3 M( l+ H0 ~. ^. L9 [
R factor is used to determine insulation capability. ' o. I4 |$ k1 C( y( [ - }6 @& F8 B9 `5 `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 `+ g" d! y8 v% p- r: M% a2 d0 q8 L% e* [! U7 h: M
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 3 g# u- d' D5 W
R factor is used to determine insulation capability. " C: S' `% k) @) A J) {% A/ h8 R+ t. `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 X1 e0 o4 @/ m* a p+ {. q ...; M, S) q: r, R6 X: U$ ^
小黄 发表于 2011-2-18 09:06
7 e# r8 s! r4 B' B
Thank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? 9 Z( @/ n9 @9 u0 B2 XChiaPet 发表于 2011-2-18 09:09
2 O! K0 i( K% [* `3 v( iAsk your builder to give you an exact quote. . c( f2 [; F6 R+ ~You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.* U. ?4 C: S8 D- D/ r
You don't have to upgrade all the windows. Only the important ones./ {' s( I# L( O& }# L+ x& A
小黄 发表于 2011-2-18 09:13
. r- k, u% d/ q6 n0 [- J- } 4 j& h' L3 v+ ]% ^, ^& t1 nit must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.