 鲜花( 57)  鸡蛋( 42)
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Advantages
# `, q" [% v7 k7 e, Z j, h5 E& r, GVery durable in cold weather9 y! h1 K8 D5 ^+ K9 y6 x
High percentage of recycled material and are 100% recyclable* `/ ?# } Z+ ~; ^+ J8 ~7 W
Disadvantages4 z' {2 n7 q2 E% K: U% N0 W6 d
Rusting (require maintenance to prevent corrosion)) ^3 a* @0 o" g* K0 m' v- @
Copper and lead roofs can be targeted by metal thieves
0 \, p0 ^/ o: T. h8 Q5 [( r7 p( WHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure
$ S, s1 l0 e# a3 Z/ t5 e' sCellular and radio reception may be negatively impacted |
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