Advantages 4 T# r% O) w1 \) H8 m& A* rVery durable in cold weather ' M7 {# M# M5 T6 [High percentage of recycled material and are 100% recyclable 1 l# I; f$ S2 H/ m. aDisadvantages % w& U' _1 z6 K# s. x' o, {Rusting (require maintenance to prevent corrosion)- ]7 x& T" T: I% P
Copper and lead roofs can be targeted by metal thieves2 z$ | N& ]* o, S
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure8 U B0 V; E/ y; @0 {
Cellular and radio reception may be negatively impacted
Metal roof ?? 9 a5 H3 s# u* n( ^% ^( Fwhat's going to happen in a hail storm, will it be very loud ??? 7 W& R9 e$ d% z' ySummer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 ) l/ o6 O& W" W% d- b7 ~
Metal roof ?? d) S3 l3 V8 _5 _
what's going to happen in a hail storm, will it be very loud ???2 g; c# z: {/ P4 C: m& n
Summer raining seas ...