what is R factor? how do you have UV on the windows? % e' q* o7 }- v% [ChiaPet 发表于 2011-2-18 08:53
8 ^: t2 A* `0 ?5 L4 ~3 x" T$ d LR factor is used to determine insulation capability. 5 l/ t( m" j) t1 q& R5 [ ! c: n/ u& p/ S5 z2 d: bHere 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. . u. k+ H [* t7 y7 L3 o3 a$ f) t : {& v2 _4 i* P+ H& S5 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.9 ?, M1 ]/ \6 e% X, c
4 N( j2 T6 D8 s9 yHere 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. % g& ^0 e9 v* F o ...7 P* N$ `9 X! `( l- v0 u
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?6 G$ H/ j2 u; `6 J
ChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote. ; J" c$ g3 m5 y8 b" cYou don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. 6 f* P& m* m# J4 v: t- Y2 z/ EYou don't have to upgrade all the windows. Only the important ones.9 ?' p/ ?9 [! o
小黄 发表于 2011-2-18 09:13
; s. j/ K5 i6 e8 m1 @4 C: O 9 v8 r1 I' y: A# g* Jit must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.