爬到屋顶阁楼量一下就知道了 & w! ~. n* N( X, l# k% v X8 H8 ]' k* ^/ i http://www.edmonton.ca/environme ... AtticInsulation.pdf# _& x6 N) Z) {$ P( U% [" j
/ b: \4 L; E: P. H http://www.edmonton.ca/environme ... ulation-rebate.aspx ; f1 s' B( _% Y) U; K! P( A应达到R50 % ~/ v1 \+ C' n1 P# ]6 ` @0 {6 S& C6 a: E; k& D* \7 ^
Attic R-509 Q3 w+ B! P$ e
External Walls R-20: y& s, z; P) n9 y" i m) H$ r& b5 G
Basement external wall R-20. 3 ]# D% d/ y' Z" g, J & C! b7 t g1 y- J, i) Z 9 D! z& f$ `. k" B' U$ C# J6 [7 Ghttp://www.georgianinsulation.ca/s/FAQ.aspx4 Y9 W. P- q& a9 x
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According to the Ontario Building Code homes in central Ontario should have a minimum of R32. This is the bare minimum that many builders install. However to prevent excessive heat loss and roof ice your attic should have an R50 value, as recommended by EcoEnergy Canada. R50 is equivalent to approximately 13 inches, depending on the type of insulation. ?; ^; |4 o. \2 L3 r
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发表于 2011-7-17 22:55
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