what is R factor? how do you have UV on the windows?; ^4 X/ G9 }& }
ChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability. ! C! ~# A1 N G& u7 g # I2 C& K) q3 l$ RHere 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 c. P0 T$ C3 V' F
" C" e1 l% `6 VHowever, 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.1 {" {4 G. w6 d( l5 s
$ g* j* G; `6 n0 p; K1 b5 Q! t1 xHere 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. 7 d l" A5 d( M e" {$ ~4 Q* { .../ z% ]" p, r$ |
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?) j' S; O$ ?, c F1 `" c8 _ d" m
ChiaPet 发表于 2011-2-18 09:09
7 v0 P7 f* j ~9 b6 FAsk your builder to give you an exact quote.1 ]) V; W% H! x& V5 y
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.6 Y, K7 ^2 v2 D4 H- L* q
You don't have to upgrade all the windows. Only the important ones.) d) U4 o8 Z7 {& `' ~1 g
小黄 发表于 2011-2-18 09:13
6 Z8 H; ^ _5 o) C" M7 w5 r - {; l6 |6 T4 @, Q9 I& z& \" @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 ...5 _# W. b7 H% i8 b' k
amy-china 发表于 2011-2-18 16:09