Advantages* h! R1 N" ^2 Q# l3 |" O: ]* w' E
Very durable in cold weather ; M8 S5 ]$ t5 kHigh percentage of recycled material and are 100% recyclable 2 h1 ]$ R; Z' |9 x; p6 O1 k6 O1 B5 DDisadvantages - |/ e' e( e$ F6 ZRusting (require maintenance to prevent corrosion) 2 R# |/ H$ }4 FCopper and lead roofs can be targeted by metal thieves9 e- K+ E) J5 Y4 p2 L
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure - p2 w4 {) Y! R4 }# L; ?* wCellular and radio reception may be negatively impacted
Metal roof ??1 J: j; ]5 \/ k5 P" p9 D1 t
what's going to happen in a hail storm, will it be very loud ???8 {% T+ T% |( i: c' E+ T2 K/ I4 V
Summer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 ; u w. P( E. p* F0 ^4 |& _
Metal roof ??5 }! H8 g, T9 k8 k* S# N
what's going to happen in a hail storm, will it be very loud ???* q+ }; `& P3 e7 m% Q, T* o. D
Summer raining seas ...