Advantages 5 c5 q) H. j, C* K9 B7 |$ jVery durable in cold weather - @9 _2 |' e! j+ J7 O! x( F8 a. |High percentage of recycled material and are 100% recyclable . {7 n' M3 L7 c2 D/ S8 C# `& P) \6 V$ zDisadvantages+ z+ C/ x5 _6 u
Rusting (require maintenance to prevent corrosion) 2 E5 n( X! D9 ]$ uCopper and lead roofs can be targeted by metal thieves & h7 R8 r6 n! g& aHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure; p0 ]- z/ ]) {$ G
Cellular and radio reception may be negatively impacted
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what's going to happen in a hail storm, will it be very loud ??? 7 X" M5 p- c& t/ l- w; d6 mSummer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 ! ~7 r% i7 X8 x p2 {' Z m% zMetal roof ??7 p$ Q; `7 Z# P1 o
what's going to happen in a hail storm, will it be very loud ???! g; j" {5 M4 d0 {
Summer raining seas ...
icing 发表于 2014-6-7 22:36 # G) m. j! h* w* f" q. y: \8 fMetal roof ??# F1 E7 k" t+ h# y
what's going to happen in a hail storm, will it be very loud ??? : e$ w6 F+ p0 O9 BSummer raining seas ...
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that is not my major concern, the hail won't last long, but other issues bother me such as cell signals, conductivity, etc.