Advantages ) ]9 y3 U- Z% Q+ o" I( o9 yVery durable in cold weather - L7 w5 D! D0 IHigh percentage of recycled material and are 100% recyclable8 t9 m5 z! z0 L5 S! r7 \& q
Disadvantages4 e, B& P) P" E h% a' ~
Rusting (require maintenance to prevent corrosion) 6 {! ~. p8 h# ~( Q# t1 b BCopper and lead roofs can be targeted by metal thieves ; i$ F6 k9 D; l; S% L! g& \9 C+ \High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure4 {" L" b0 f1 ~. Y
Cellular and radio reception may be negatively impacted
Metal roof ??, y1 |+ W8 \0 W1 d8 V3 f
what's going to happen in a hail storm, will it be very loud ???/ Z% ?6 @* w) V
Summer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 9 h" {7 k$ i0 ]8 BMetal roof ?? ( q8 v* y' L* u# D m2 [3 e2 Q Gwhat's going to happen in a hail storm, will it be very loud ???; V; Q- a' B6 ]
Summer raining seas ...