 鲜花( 57)  鸡蛋( 42)
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Advantages
6 N% x+ b, ?4 H( y) ~, q+ E9 mVery durable in cold weather
6 h7 ]8 ?$ f* I, UHigh percentage of recycled material and are 100% recyclable/ _- g: Y( |& x+ N. G. D8 T
Disadvantages
/ P& M" H: f! oRusting (require maintenance to prevent corrosion)% D8 X/ V* x8 i, X
Copper and lead roofs can be targeted by metal thieves: X9 F& R$ C0 e+ I+ n8 \
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure* n, Y: A" ~2 G- s; p% ?
Cellular and radio reception may be negatively impacted |
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