 鲜花( 57)  鸡蛋( 42)
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Advantages
- Q" @" {2 O, s6 X, ZVery durable in cold weather9 _5 C' M0 A* k$ z- I! \
High percentage of recycled material and are 100% recyclable
# [, V) }) N O, H, k4 FDisadvantages
; S# {) N! _" D7 o5 m3 G' eRusting (require maintenance to prevent corrosion)1 @+ i1 g0 j; e
Copper and lead roofs can be targeted by metal thieves, K. D0 x5 b! |! C
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure% `! ^" T2 U+ i/ P7 c! i
Cellular and radio reception may be negatively impacted |
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