what is R factor? how do you have UV on the windows? 1 s3 L6 g# S9 S( v* IChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability.9 C# t. ^& ^, u. M `/ 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.' l0 @" [* @3 j
) h# d! \6 x3 |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.
R factor is used to determine insulation capability. L5 W0 V* r) N, H" I: H" ?* K' l$ z3 S
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.( g& N) p) |4 m# j
... 2 A( T: d. q0 h) x# K# s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? 4 j5 f0 N8 L. T- w4 lChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote.* ]' W( j' b% K& C/ P+ e8 P+ E: x
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.7 d" i) B& w) ^" M; S) f) w" [
You don't have to upgrade all the windows. Only the important ones. 5 z3 ^8 u& y! {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?8 U% C/ ^# x- t1 o) b' M
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.