 鲜花( 57)  鸡蛋( 42)
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Advantages6 o$ S2 s5 b" k/ s4 V+ h
Very durable in cold weather
! [, v: Z/ s. sHigh percentage of recycled material and are 100% recyclable5 {9 ~. M: d U, @% e, I
Disadvantages
& h M& Z, D' GRusting (require maintenance to prevent corrosion)
' y X8 R4 o. W; C0 {. p' K* M! h A% @Copper and lead roofs can be targeted by metal thieves
- {& Q& E" M' p8 h1 RHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure# ^) ^% z; u- d, T, Q- O
Cellular and radio reception may be negatively impacted |
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