Advantages 3 S: B0 i' ~$ A/ w2 MVery durable in cold weather : W; z# K$ a; }0 \High percentage of recycled material and are 100% recyclable# J8 m6 B: g2 o' @+ P
Disadvantages, h/ g M4 u3 o# a
Rusting (require maintenance to prevent corrosion) X1 U$ k. u4 l1 w8 NCopper and lead roofs can be targeted by metal thieves/ `9 ?: Y1 t2 v+ D
High heat conductivity of metals (particularly copper and aluminum) requires careful incorporation of insulation into the roof structure# e7 D2 C# E; E$ b; _: `3 `
Cellular and radio reception may be negatively impacted
Metal roof ??7 g ~# y C0 }6 S
what's going to happen in a hail storm, will it be very loud ???" w, a- a$ S9 j: \& w: {5 K* _- {
Summer raining season, if it rains in night, people can sleep well ???
icing 发表于 2014-6-7 21:36 - J1 F' O/ \: x4 W( r# K2 k
Metal roof ??% n0 P* Y$ s+ z" r
what's going to happen in a hail storm, will it be very loud ??? , T; s+ Q. X B- gSummer raining seas ...