Advantages 9 e* Q0 R! @' F9 Q9 ?/ D WVery durable in cold weather - G: L- r: G0 @3 Q: A! mHigh percentage of recycled material and are 100% recyclable 2 U3 X- Z* Z5 z$ dDisadvantages$ `( F7 d7 M: J: O& l9 N8 Z* h9 V
Rusting (require maintenance to prevent corrosion)% z6 U& W: Z4 ^! Z, Y; k
Copper and lead roofs can be targeted by metal thieves ( l, {9 Z2 d; i: y2 ?9 fHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure3 I( U+ k, D3 [! j+ X$ s9 w0 c
Cellular and radio reception may be negatively impacted
Metal roof ??9 o9 C- A1 L* ?- u( n- F
what's going to happen in a hail storm, will it be very loud ??? * R+ j P5 \) H6 |: B0 T* l& N9 WSummer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 & O! l* y+ `' m( a5 g0 B
Metal roof ??1 G. H& ?; c9 _8 H8 Q
what's going to happen in a hail storm, will it be very loud ???3 s4 S$ S9 c6 U" h
Summer raining seas ...
icing 发表于 2014-6-7 22:36 , ^+ n6 I# P P5 d
Metal roof ??8 _+ A5 P1 A- e$ t d% n1 b" ?; z
what's going to happen in a hail storm, will it be very loud ???+ ~; R7 Z k( _+ h
Summer raining seas ...
. @( z- X. E7 mthat is not my major concern, the hail won't last long, but other issues bother me such as cell signals, conductivity, etc.