Advantages 4 K p% G! a/ I6 b7 xVery durable in cold weather# H' o6 T9 b# T- L7 z$ g
High percentage of recycled material and are 100% recyclable 0 v& H$ }1 b& ]( u: d( y% kDisadvantages - X% E: }8 H/ F! k7 y/ gRusting (require maintenance to prevent corrosion) # `2 i1 w' c0 i x7 vCopper and lead roofs can be targeted by metal thieves: N) a T0 m; P$ v9 j- T
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure. ?) I; Y* [0 k8 D& C% b% {
Cellular and radio reception may be negatively impacted
Metal roof ?? 5 b5 B4 K# p% Z& {what's going to happen in a hail storm, will it be very loud ???3 A+ j2 F; R# e# p9 E7 t& T
Summer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 7 H% Z' Q1 t, H, n
Metal roof ??8 F( M ^4 `4 {8 Y3 |: \
what's going to happen in a hail storm, will it be very loud ??? 2 H" M! p# f0 u: _$ ^Summer raining seas ...