what is R factor? how do you have UV on the windows? * Z( K0 a! U1 H0 p& JChiaPet 发表于 2011-2-18 08:53
+ w- J: g- T0 L3 C1 d7 M/ AR factor is used to determine insulation capability. / b: S5 y8 Z( ^% m+ N % z+ s3 }2 y: Z$ l. r) QHere 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. / }; O" D( J' V9 G4 ? 6 ?/ V, t4 x. S% y# _9 j: {1 e$ S( rHowever, 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.
本帖最后由 ChiaPet 于 2011-2-18 09:12 编辑 . T& i, g9 {4 L
R factor is used to determine insulation capability. * L, S( J2 ^9 m* C- O; Z: X# H( a. r8 }
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.7 x& ^4 `& j {8 h3 m0 m
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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?. x0 ?& p1 J0 o& v) H
ChiaPet 发表于 2011-2-18 09:09
- `# m8 f& p, o: n- j/ B" g& Z9 AAsk your builder to give you an exact quote.# i/ G9 C0 g& o* Q
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.5 @! m$ Z& ^2 M$ W( W$ c
You don't have to upgrade all the windows. Only the important ones.$ A2 N- {+ r! |! W5 c( u1 F6 m% E7 K, h
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.