Different quality results in different lifespan. Some warranty 25 years while the excellent ones have a lifespan of 50 years. Of course, there are others in between and last from 30 to 40 years. They are all priced differently.
我应该是这个领域的权威了。我曾经在IKO工作过。 . T8 T+ w- R- P产品是可以用30年/40年/50年的。7 u, G- k3 O' W. O7 L+ F
但是记住,安装水平是整个屋顶的关键,这就是有的安装公司要价1万但是另家可能只要6千的原因。 ! ~; D( U, ^- m& ]& k. M# T0 P质保是取决于怎样安装。还有房顶的角度和结构,屋顶的底料。 : H; e! P4 b$ Z n, i" D: v3 h5 _2 Y6 z
通常10-15年就要换屋顶。