what is R factor? how do you have UV on the windows?, X4 w P) \# R
ChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability. ' L v) q4 r+ U) C& {. G: j( w
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 L8 H: c* A, o: A ! w$ ~- u* y/ _( U- g" UHowever, 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. ) v. Q) d1 u& q* H2 J9 R8 o" z$ [4 ^8 |, P% o: G4 C
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.& }6 _( S" v+ ~9 d
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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?. P1 g$ \+ V8 D J5 ]
ChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote., S _0 C$ E) c: e# M
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.7 t6 B j$ J5 f/ Y+ V' ~8 f
You don't have to upgrade all the windows. Only the important ones.( l3 \3 D* Y/ H6 k6 p
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? - E5 d' t% ~& Y UChiaPet 发表于 2011-2-18 08:00
$ v. i2 G; I5 @4 h2 B4 F 1 h; Z, G1 x% K: ^& b$ Sit must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.