what is R factor? how do you have UV on the windows? $ V9 \ _( X- H6 FChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability.* G5 H9 k9 K2 |& y8 u, x1 m
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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./ @ h. [6 B0 ]0 Z4 l
1 U; u }; g! y( u! hHowever, 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. 7 B' W' B! U# R! Q( p q0 S P9 k7 I% {' b" p3 dHere 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" ^ I* q6 {1 x9 o8 y/ f+ r
... ; Q4 b- D0 d1 G: o$ a小黄 发表于 2011-2-18 09:06
5 x# r- a7 l2 d1 B5 j2 q% gThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? 1 f, u: _; c, C8 \( EChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote. 5 {9 p- b: o- p. _$ y5 EYou don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. / G- [$ W+ E' ]! k5 O/ e6 j$ PYou don't have to upgrade all the windows. Only the important ones. 4 I& D8 t" T5 v' T5 K0 L# {小黄 发表于 2011-2-18 09:13
请问:主卧,客厅和饭厅朝西, 车库和bonus room朝东好吗?朝西晒的房间,夏天很热吗?6 O4 M, S8 B/ ^* n5 e5 |6 w0 c
ChiaPet 发表于 2011-2-18 08:00
. p& b- }' K( @! u9 a' z + s# ] w7 C! @' D1 ]it must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.