 鲜花( 57)  鸡蛋( 42)
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Advantages, g% ]$ A# y, B0 X
Very durable in cold weather
3 ~- |( T4 v3 }1 i) UHigh percentage of recycled material and are 100% recyclable
/ E, }# ^$ M; o! eDisadvantages9 E- j {% D' d
Rusting (require maintenance to prevent corrosion)
$ D* p( X3 v; ZCopper and lead roofs can be targeted by metal thieves
8 S4 z/ U3 w5 R! g( ]6 Q8 BHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure
, U3 h% W( O% |, O2 O+ z# g: b& m2 [Cellular and radio reception may be negatively impacted |
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