what is R factor? how do you have UV on the windows? 2 ?' Y! y* m4 [* O2 I1 m( w' `9 dChiaPet 发表于 2011-2-18 08:53
( B% i- w/ q0 g/ T. L/ O) ~# eR factor is used to determine insulation capability.* z+ W8 W- B* I, {/ L" i0 L/ b
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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. , |& y- r& I) @+ o* q ! d7 P' Q9 K5 H j2 z- \ ^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 $ k$ [( M, y7 f! I
R factor is used to determine insulation capability. . |3 V" E/ K; c& v5 G& M3 I$ ]9 o \, ^! U
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.% h2 d+ c. {$ l! E# p
... 1 C' y( m3 F; f0 E小黄 发表于 2011-2-18 09:06
+ i- _% T" L5 W9 y0 O- YThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much?$ \. C( A/ Q" G* [! z5 ]
ChiaPet 发表于 2011-2-18 09:09
, X9 t1 P4 l0 _2 D6 ^/ j$ oAsk your builder to give you an exact quote.' }% y- k" `( U) l1 `
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. ' {7 Q) |3 r# Q# e; Z! l! `! s7 dYou don't have to upgrade all the windows. Only the important ones. 4 W7 U" \4 m/ {' |$ R: C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?+ \0 P \6 H3 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.