Roof

來源: 於 2012-09-20 12:34:48 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

Hi everyone, I need new roof on an apartment building, here are the options:

1. Asphalt and Felt Roof System 

2. EPDM Rubber Membrane Roof System

3. SBS Modified Roof System

The building has a flat roof.

Which one is better?

Thanks!