 鲜花( 57)  鸡蛋( 42)
|
Advantages
7 j. p1 I v5 X8 j- b7 h8 F& `Very durable in cold weather
8 q7 g V/ J7 F x5 Y- `7 MHigh percentage of recycled material and are 100% recyclable
& m0 W7 D4 a: f0 Y' ], xDisadvantages
, Q. H3 C5 x! w& l* ERusting (require maintenance to prevent corrosion)
* T9 n1 E, r: c% ?4 D9 t3 vCopper and lead roofs can be targeted by metal thieves
9 G, o8 q- r, Z, KHigh heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure
: H: D! P! ]7 }0 \3 ]Cellular and radio reception may be negatively impacted |
|