what is R factor? how do you have UV on the windows? " V# G0 c# K& t' V$ W: ?3 w# ^ChiaPet 发表于 2011-2-18 08:53
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R factor is used to determine insulation capability. 8 W' _- d3 V& \4 z% A% @; d 8 x X/ _5 w S. _$ D; X5 _+ \& ZHere 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.# i/ o& a) u) n8 K: Q
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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. 3 O! ^9 L5 H; p / e) A, L5 A4 |# w+ ?1 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. + K0 Y: D6 t7 [4 f( N, h ... D) N, J* F6 E n: Q O小黄 发表于 2011-2-18 09:06
9 E; f+ [) B2 C( X, IThank you for your reply. But would sun-stop coating cost too much?
would sun-stop coating cost too much? ! n5 v- t7 [3 w T! M hChiaPet 发表于 2011-2-18 09:09
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Ask your builder to give you an exact quote.: L# `- m( Y" t! @6 Y7 B( f- ]
You don't have to upgrade all the windows. Only the important ones.
Ask your builder to give you an exact quote. * v6 E; I9 f: O/ x& @You don't have to upgrade all the windows. Only the important ones. 3 ~) E v- ]) G" s6 v小黄 发表于 2011-2-18 09:13
. Q9 L7 \1 [% X7 G2 ^, H$ Z 8 \2 h3 c `5 J# S; t8 W8 s: }it must be one of the best, get lot of sunshie, summer may be a little hot, but winter it will be so marm.