what is R factor? how do you have UV on the windows?8 Z+ t: ~% ~! {
ChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability.. D; ?% f! b* U$ _, K6 ]- {
& _5 h! X5 k, {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. . I0 B& ~( A) _5 \( {- i# w; F+ c: c+ U i M R
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.# `, O4 C0 v( R# ^/ \
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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.3 `/ Q7 e/ n P1 P
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小黄 发表于 2011-2-18 09:06
& N' T* s' {4 b& \1 D' t0 vThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much?4 ]& }; T3 x/ j6 T0 Z$ E/ d) } Y
ChiaPet 发表于 2011-2-18 09:09
* F6 P: I: N3 f! M u, x. s4 NAsk your builder to give you an exact quote.* m% y1 a8 l0 _0 A
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. & [$ Q2 F* |, uYou don't have to upgrade all the windows. Only the important ones. + j! J. ~' V! w1 i& o* g9 ^& 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.