 鲜花( 57)  鸡蛋( 42)
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Advantages
3 O2 n' R, S5 S8 T; x, }; DVery durable in cold weather4 S, U3 R; N# g/ T7 D, N& }
High percentage of recycled material and are 100% recyclable ?/ k" O- J1 ], \- H
Disadvantages! G" C, i! }9 ]& |0 J0 I
Rusting (require maintenance to prevent corrosion)
9 f# V) S, y" h+ Z' F( ] t; pCopper and lead roofs can be targeted by metal thieves
3 b' j% t& L2 dHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure+ ^5 i" v- a9 b8 J# L/ L: ~3 y% U+ G
Cellular and radio reception may be negatively impacted |
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