Advantages $ r1 A4 b0 r) @Very durable in cold weather 9 W6 V$ Z, n- l) Y4 KHigh percentage of recycled material and are 100% recyclable; u. f* ^: B' Q& [
Disadvantages 9 @5 H5 m+ b/ m& lRusting (require maintenance to prevent corrosion)( c1 g5 W& p6 K/ b8 e0 X( ?
Copper and lead roofs can be targeted by metal thieves" d& {( X5 R6 b" F% x, I7 v _
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure + W1 y7 w2 y" @+ m& k) r. kCellular and radio reception may be negatively impacted
Metal roof ?? F% ^& g' y7 _
what's going to happen in a hail storm, will it be very loud ??? ! B2 g0 g" g, S, X$ kSummer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 9 Q$ U! {) ^, k4 g- _
Metal roof ?? 7 p' B8 |2 I- @& R9 c4 gwhat's going to happen in a hail storm, will it be very loud ???7 _4 T* c$ a( G2 g! `2 u
Summer raining seas ...