what is R factor? how do you have UV on the windows?- m# N& `' u: r% T. G
ChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability. 1 P7 r5 r& l/ E9 [- r7 M1 G+ h! r: L% h" \+ z
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.: h* o" T& P7 F1 ^) C, w+ C8 ` M
; T; P, Z; R0 M" \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.
R factor is used to determine insulation capability. - C2 Z/ B: a/ }4 b$ u# q ) B; ?: p; o% T9 ~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. " r5 l0 O$ t: B' J4 F' v6 d3 v ... 3 f; r$ A I; r0 N4 D( r5 R+ d小黄 发表于 2011-2-18 09:06
0 t* L* D: G( p; X3 R" JThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much?- n9 H, b, }2 [" E- T
ChiaPet 发表于 2011-2-18 09:09
9 X0 s7 J9 p& [0 c3 V; @4 fAsk your builder to give you an exact quote. }' f1 K. F$ u# {5 Z V2 z8 JYou don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.4 M. o. ? }, T' _) |
You don't have to upgrade all the windows. Only the important ones./ \8 b _) N. D2 Q. y. 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 ...6 o1 g' T. d- b1 ?% c' r9 d: S3 y b
amy-china 发表于 2011-2-18 16:09
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谢谢你的信息,我也正在考虑是不是东西朝向的房子(客厅,饭厅,花园向西,bonus房间向东)会比南北朝向的好,因为可以两边都有阳光进房,唯一担心就是夏天客厅,饭厅房间西晒会热?很想再确认确认,期待你的答复,万分感谢!