 鲜花( 57)  鸡蛋( 42)
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Advantages
' O6 C! n7 D- b, g8 _Very durable in cold weather
( G( \2 q: j$ J4 i5 M' e8 w' B' t" IHigh percentage of recycled material and are 100% recyclable
* I+ f2 o- w; t+ s. i, e# S+ xDisadvantages, D2 t5 g( e4 _2 Y! W+ Q, L* o. V
Rusting (require maintenance to prevent corrosion)
) b* J; B0 H5 LCopper and lead roofs can be targeted by metal thieves! Y0 @6 s: E$ p, Z9 q( J9 Y# G
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure
: ?1 n/ ?+ h, l1 P9 g# `Cellular and radio reception may be negatively impacted |
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