what is R factor? how do you have UV on the windows? 4 d. r% g; n# l% c5 O$ T0 k" ?ChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability. + N1 L% C' I4 k& d2 k1 F4 z0 k Q. ^& r2 h
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.% v$ M" _2 a7 Y8 _2 c
2 G: F; `; I1 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. " K- q2 X& {0 V8 L" x/ \4 K: y, ?
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 P2 H1 o% _6 A) J' d' s0 q ...9 W7 E# \+ Q5 U$ g4 b
小黄 发表于 2011-2-18 09:06
7 _! L0 D5 ?$ n; W) i' w' aThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much?4 s. X% r' |: ]# `4 N: X
ChiaPet 发表于 2011-2-18 09:09
# k/ Y' b( S6 h* Z& f. q5 R% tAsk your builder to give you an exact quote.: ]+ T! {- d& \9 |
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.0 Y7 A6 l7 w$ e4 R, L% Y4 h+ I9 l/ e
You don't have to upgrade all the windows. Only the important ones. 0 H& w% }: R0 W/ o小黄 发表于 2011-2-18 09:13
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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.
我觉得不会,去年我买的新房装有空气换气系统,有三档,最低一挡是每20分钟就RUN一次,屋里温度夏天也是阴凉阴凉的,很舒服.BUILDER告诉我用最低档每月大概比不用增加$5,不管增加费用是不是这么低,总之我没发现比人家增加 ...+ d- {, C. Y G; N1 m1 ?4 u
amy-china 发表于 2011-2-18 16:09