Advantages0 d* I0 w( J$ Q5 o! x7 V* [+ n* ?
Very durable in cold weather 8 [$ u! N: X4 v) jHigh percentage of recycled material and are 100% recyclable; g/ ~7 l) S% k! m: b. q, h
Disadvantages' ?6 T: X. T" S- T
Rusting (require maintenance to prevent corrosion); i+ ]7 V- o' ^4 k
Copper and lead roofs can be targeted by metal thieves' i1 r; W3 l- v% p7 ]$ C2 q' @
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure ( }) e; [, B; T! |Cellular and radio reception may be negatively impacted
Metal roof ?? , K- q& D3 p' z& L4 Kwhat's going to happen in a hail storm, will it be very loud ??? : r. B& j! g; K* Z _& s/ x' X$ _& i" bSummer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 ! j4 u9 T" W" r) a! h
Metal roof ??2 y3 \/ v4 a. j, O$ R) s& o
what's going to happen in a hail storm, will it be very loud ??? 3 t8 O, P+ a5 F) a9 _ m$ pSummer raining seas ...