what is R factor? how do you have UV on the windows? 3 ?& U) Z; g5 t6 }; x8 cChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability.# Q& a$ V. [- V- s" f
8 L( m( `, u9 g# SHere 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. & r" H0 o" M4 H' U: \' v; t% @7 _! ^
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 # R/ }9 J. P+ Y; a+ v$ A4 U; a
R factor is used to determine insulation capability.7 ]9 k+ q3 N7 h/ |+ O4 D: E
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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.9 O9 Z) R0 j' ^) u) m
... 8 v6 h: {( Q0 v7 Z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?
Ask your builder to give you an exact quote. A4 d% j' b+ v
You don't have to upgrade all the windows. Only the important ones. : @+ ~. e/ a6 [- H5 B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?# N2 S+ Z s( U2 D+ g
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.