what is R factor? how do you have UV on the windows? / G7 b+ M0 T6 EChiaPet 发表于 2011-2-18 08:53
/ B2 O4 `4 f7 d2 \R factor is used to determine insulation capability. 9 y, ~" P1 K7 ]+ G' w( q 1 ]; m# ^7 |/ s* f% ?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.$ L6 s6 g5 W7 V c/ v) Z+ B% b
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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 7 A, k! U( {8 ]2 x
R factor is used to determine insulation capability. : l" }: d( Z) j% _ 2 _5 V* s; u* B: IHere 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.: K7 W4 |3 J3 v2 r
... / k7 L- y H; C3 m" c小黄 发表于 2011-2-18 09:06
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Thank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? 3 K4 p8 C3 k% t8 e( a) K3 g- a9 IChiaPet 发表于 2011-2-18 09:09
) U2 _, i* v0 G& a, f. ZAsk your builder to give you an exact quote.& J G9 d( A9 e7 s1 |5 Z8 b+ c5 b9 ^
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.$ s2 y2 y% X/ N1 T+ a/ W* t, V+ J
You don't have to upgrade all the windows. Only the important ones.- G$ b) ]( e; B: K% G
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.