Advantages; \) R# v$ h) X4 ^
Very durable in cold weather6 P8 g1 s0 A5 D7 i+ R3 n- h3 i
High percentage of recycled material and are 100% recyclable , o! @/ |. O+ wDisadvantages : Q% e( _) K8 _! h" \Rusting (require maintenance to prevent corrosion)$ h, ^# O( ^" ~" H0 K
Copper and lead roofs can be targeted by metal thieves. g) b5 i; L3 J% p: m' P
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure5 [4 [9 w0 D+ ]* u6 e3 p; L
Cellular and radio reception may be negatively impacted
Metal roof ??6 F7 Q {; y3 c1 [* Q
what's going to happen in a hail storm, will it be very loud ???7 \4 P( W1 c4 g, e( O8 Q5 Z
Summer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 V: j9 Z! |% l# v/ C
Metal roof ?? & }/ Y, Z' X( |+ U9 @5 wwhat's going to happen in a hail storm, will it be very loud ???; i2 k# h4 _ v! t( `0 t
Summer raining seas ...