what is R factor? how do you have UV on the windows? ; z9 a6 m3 ], B: UChiaPet 发表于 2011-2-18 08:53
% e( o( G# B( n% O8 T, k( y3 m0 s% BR factor is used to determine insulation capability. ; R" F, d( ~1 G; R6 ] ; k" ]9 Y" Q0 f# S8 }1 BHere 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.' O1 V+ i* [ S- P% t; K
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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 @! I% b) Y$ d3 V. b/ f0 z
R factor is used to determine insulation capability.5 m! g) a! s8 t9 }. a r
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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.2 j( X4 l2 k& v. f
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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?/ O2 W1 T1 c( o7 y# ?7 t5 {
ChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote. l/ O. O& h/ Y+ i. w% L
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. 5 Z9 a: {0 Z6 |: A. YYou don't have to upgrade all the windows. Only the important ones. $ ~' r, p) T+ [2 _# u小黄 发表于 2011-2-18 09:13
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Will do. Thank you.
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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.