Advantages % R$ D4 D3 X3 t- U- Y, k [+ LVery durable in cold weather/ z5 B3 `6 D" t/ a# i2 ]- T
High percentage of recycled material and are 100% recyclable 5 F) {3 [1 e' P1 j/ kDisadvantages: ?$ r+ h9 a) S- J) r5 J; g. H* S% K
Rusting (require maintenance to prevent corrosion) / O; D9 y2 V% i5 ?Copper and lead roofs can be targeted by metal thieves/ l8 S8 y; N! ^7 }" X4 L
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure5 d8 ~- F. K, z$ N! K
Cellular and radio reception may be negatively impacted
Metal roof ?? 4 T G6 Z% h) z( \0 O3 g6 S$ w6 fwhat's going to happen in a hail storm, will it be very loud ???4 d$ P$ c. ~. x/ C. u. ^
Summer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 , V& r g! ?( jMetal roof ??: o, T9 G1 d8 A, V
what's going to happen in a hail storm, will it be very loud ???1 m/ R+ d. l9 H/ B3 v! V+ p
Summer raining seas ...