 鲜花( 57)  鸡蛋( 42)
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Advantages
+ v, S# d' d. R0 U/ W- ~6 i8 GVery durable in cold weather$ B/ h0 z7 ]4 A7 P, R, I2 x
High percentage of recycled material and are 100% recyclable
) W7 |7 p4 m" O% KDisadvantages! q) m! _/ _" Q. b
Rusting (require maintenance to prevent corrosion)/ Z1 T* f9 I3 y! P
Copper and lead roofs can be targeted by metal thieves0 ^: Q( N$ y, w
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure
: E, N- v; N/ a0 f: `Cellular and radio reception may be negatively impacted |
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