Advantages: e" s' D: d1 I1 ]$ I. y' ^
Very durable in cold weather' N* T9 g4 p4 [, A' G; K' y1 t
High percentage of recycled material and are 100% recyclable , L) {7 s% H3 q& c4 C/ NDisadvantages + V( o' }4 }. Z' aRusting (require maintenance to prevent corrosion) ; t/ R5 \% \0 v: f" VCopper and lead roofs can be targeted by metal thieves % J& h" h1 @* ]4 Y9 U5 ]High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure" ` {) ?$ c. g: y+ D" K
Cellular and radio reception may be negatively impacted
Metal roof ??! e: ?" G. O: a+ }4 }* I+ v: e
what's going to happen in a hail storm, will it be very loud ???1 O, {: R6 O$ I7 z" b; X
Summer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 # n" [: m% c7 U: [9 T. c' ]- q8 `
Metal roof ?? ' X8 N: y0 t: G# Y) mwhat's going to happen in a hail storm, will it be very loud ??? + n1 f- ~# w- _* K% g3 V, bSummer raining seas ...