what is R factor? how do you have UV on the windows? " } l. o8 e. @1 Z# e% A4 w' i N) XChiaPet 发表于 2011-2-18 08:53
' g, ^) {4 E( Q# W: UR factor is used to determine insulation capability. a4 ^$ I. y5 R1 R
. b* p# Y! `& t2 s! X3 y/ KHere 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. M# O. D" y0 G% y& H9 k
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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. 5 [$ n# E# W! \$ ?5 r5 m 8 P" v; t+ O- w( c1 ^& w3 OHere 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. . f. g1 ], b9 b+ K$ J& u/ v ... 5 [' p3 n+ k3 L5 Y+ z) r0 L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? * G7 T5 ~8 g: z7 y# PChiaPet 发表于 2011-2-18 09:09
+ @2 l( W2 z% M5 p$ q5 IAsk your builder to give you an exact quote., d' M5 g. }# l1 G9 [2 G
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.) U2 B; V, p# \& M% d- _8 F
You don't have to upgrade all the windows. Only the important ones. ! ~* f0 Y: q! p+ W/ ~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.