what is R factor? how do you have UV on the windows?" ^5 p% W: L5 }
ChiaPet 发表于 2011-2-18 08:53
& ?( d) S' o) k# _/ u1 z- x4 ZR factor is used to determine insulation capability.) s R W5 @. s: p' Q' M
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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.: S; Z" B7 W- |
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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.1 W d5 Z5 z i* k4 d! w
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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.# G% @5 G, M6 Y" l8 Q
... % o6 f7 J8 Q7 B2 {4 B+ a, r小黄 发表于 2011-2-18 09:06
$ @8 }* v: e0 x+ e8 a5 \8 T2 R/ cThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much?7 Q7 ^& U; b0 T* d1 T! O+ N
ChiaPet 发表于 2011-2-18 09:09
+ }0 @; g6 [5 d# m0 ]& n- kAsk your builder to give you an exact quote.' u# A# f6 t& @* J- D, l! y
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. 3 Y7 M- r9 o5 ~% H& @+ {You don't have to upgrade all the windows. Only the important ones. # U8 t; B7 T, F0 ?& M" Y小黄 发表于 2011-2-18 09:13
6 V5 ?( S. q0 b0 U9 n 5 ]& q' j( v1 Y7 _# L) }" uit must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.