what is R factor? how do you have UV on the windows? - {/ i3 v2 P' E" WChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability.$ c) ]" |) V4 Y3 D
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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.: a) d+ R B3 V$ b
1 g7 w- O, l2 ], M: P- fHowever, 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.( b' _ ?+ U, z8 J4 i
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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.3 J, ^" s; v: i h4 v8 E
... 7 P+ p! g: w' V( K( C; i9 w+ V9 ~小黄 发表于 2011-2-18 09:06
3 B5 Y' U1 n: J9 a0 b/ L1 V5 rThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much?$ q$ s, }" F# S+ f# J0 T
ChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote.. y3 L5 a/ z8 ^: E; Q
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. $ E/ g2 i# t: p) v+ ?5 t6 @1 NYou don't have to upgrade all the windows. Only the important ones.* D" s1 M+ @ w. W" y W
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?% _5 P. w( c0 ` x6 x
ChiaPet 发表于 2011-2-18 08:00
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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.