Advantages2 x4 `" l' c6 V2 ]# k5 Y5 v- P
Very durable in cold weather 1 x4 w+ z* W: e- K7 X9 a* SHigh percentage of recycled material and are 100% recyclable; U) s& Q( q7 M P
Disadvantages# b# C: H9 @' `7 f( C1 {4 h+ ]0 s
Rusting (require maintenance to prevent corrosion) ! d- Y _2 }5 T+ y" gCopper and lead roofs can be targeted by metal thieves; S J0 a1 _% m7 o5 v
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure& B4 L$ K1 l: j) t/ S
Cellular and radio reception may be negatively impacted
Metal roof ??, R0 `3 [+ [" y$ p2 d$ W
what's going to happen in a hail storm, will it be very loud ??? " Z9 b1 F; c1 S8 K" r4 R6 U! kSummer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 5 S9 L$ g5 l+ I. S x6 RMetal roof ??5 a3 P) {6 C# `" p& n8 P
what's going to happen in a hail storm, will it be very loud ???" K: h+ y$ p. @# o X% Z
Summer raining seas ...