what is R factor? how do you have UV on the windows? 0 h6 r( k1 G5 A/ ?; D0 WChiaPet 发表于 2011-2-18 08:53
3 g: ?2 K5 H) _9 z% F( m8 D/ TR factor is used to determine insulation capability.! ~% }+ ~$ L i+ Q( ~) N& }
4 Q8 A' `; K3 _: P5 I# N
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 S8 }$ S4 e/ n1 g4 B" ~! N 2 N9 D/ b+ h* V& `8 oHowever, 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 7 z; s. p1 Q' A1 X0 S
R factor is used to determine insulation capability. S4 o9 h/ }1 M; }4 } , u: H5 Z% E d' M" B6 O0 E8 JHere 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. + |5 O% y* c) u$ k ...$ a" B9 l5 T0 W( S4 J
小黄 发表于 2011-2-18 09:06
5 t# ]3 k/ n- c" z ?' e8 Z# RThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? o4 c) Q. z3 ?9 eChiaPet 发表于 2011-2-18 09:09
# l( m. J& H! A+ W8 G. j
Ask your builder to give you an exact quote., B. `! e6 v. ]% d
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote.6 l8 R! E3 o$ J- N- ?
You don't have to upgrade all the windows. Only the important ones. - f4 X( V: y* o" f小黄 发表于 2011-2-18 09:13
+ }& Z, U8 J. V6 k* f 4 Z) Q0 y, q- P$ w/ x( o& tit must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.