Advantages1 E7 ]1 ]7 n9 s- J' f! L. s( n
Very durable in cold weather* ~" ]4 e# J0 T* e8 ~6 j8 D
High percentage of recycled material and are 100% recyclable" }6 o' U3 n4 q. H; I3 \
Disadvantages 2 w3 t1 M2 C5 B, dRusting (require maintenance to prevent corrosion) % z( v# E c" \+ ^) C5 |Copper and lead roofs can be targeted by metal thieves `' S) i2 G; nHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure" s' _. i0 f; f" s0 m3 c
Cellular and radio reception may be negatively impacted
Metal roof ?? - D k. C' T9 |5 H% @what's going to happen in a hail storm, will it be very loud ??? , s2 M/ g- P4 h. ASummer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 2 S- b. q" k0 {. \* E
Metal roof ??; m0 f( e! @# d T4 l
what's going to happen in a hail storm, will it be very loud ???" u- [, i4 c, }; S; w7 x* T/ Q
Summer raining seas ...