Advantages + ?5 U/ e8 j0 k( D7 P% U2 @( FVery durable in cold weather : t1 F& [0 a' F; R: m4 }High percentage of recycled material and are 100% recyclable5 M6 j9 _. W: Y& B3 u
Disadvantages/ L: `) B* {8 n) w u+ I
Rusting (require maintenance to prevent corrosion) . Y' L- P2 a+ O4 S% W% MCopper and lead roofs can be targeted by metal thieves) A8 A' a* Z' C) Y/ K, D" C$ j# f
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure9 v5 H% }4 F/ \: q/ @, b1 X
Cellular and radio reception may be negatively impacted
Metal roof ?? ) B& I8 B! x# l, A: g* A6 ewhat's going to happen in a hail storm, will it be very loud ??? 5 \# [9 ?% Q& u- C9 LSummer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 3 b& l1 k& }4 Z# k0 B- zMetal roof ?? ; J( u Y" H; j% }what's going to happen in a hail storm, will it be very loud ???5 Q/ T4 f0 v9 v. n) e" t0 Q9 G
Summer raining seas ...