Advantages k% A9 T/ |- t3 Z; }* z K
Very durable in cold weather ) i* Y; K" M( AHigh percentage of recycled material and are 100% recyclable, D6 ~% x' C$ L3 h
Disadvantages 4 B8 P9 r3 s% A! _Rusting (require maintenance to prevent corrosion) 7 D+ R3 C- l7 ]' tCopper and lead roofs can be targeted by metal thieves ' |% M9 g4 ?: sHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure $ v, i- @9 u3 f! iCellular and radio reception may be negatively impacted
Metal roof ?? & Z: D ]! c& Z/ }' w4 O7 @what's going to happen in a hail storm, will it be very loud ???/ ^5 L) K) D5 J
Summer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 ' E T! W- K' ?1 Y( F c O
Metal roof ?? 7 e0 h/ \; |( \; \what's going to happen in a hail storm, will it be very loud ??? * H. P2 H) E; ?, gSummer raining seas ...
icing 发表于 2014-6-7 22:36 , h4 D N. ^2 DMetal roof ??, |; T' z ?9 Y+ f
what's going to happen in a hail storm, will it be very loud ??? 4 m( z# V: R# T! E- X OSummer raining seas ...
9 p/ o* `; N$ mthat is not my major concern, the hail won't last long, but other issues bother me such as cell signals, conductivity, etc.