Built up roofing is the most popular roofing material used on low sloped roofs.
Roof low pitch options.
Think of them as taking the middle road in terms of roof pitch not too flat not too steep.
For commercial buildings one of the other popular low pitch roof options is coated metal.
2 where the roof is not visible consider upgrading to a single ply roofing intended for low slope roofs.
For a low slope residential roof there are two main options.
Keep in mind that neither metal shingles not corrugated metal panels are suitable options for low slope or nearly flat roofs.
5 12 to 12 12 pitch.
This coating helps reduce the instances of rust increasing the life span of the roof.
Suitable materials for pitched roofs.
Pros cons of roll roofing bur modified bitumen epdm roof systems.
Made of several layers of bitumen surfaces built up roofing is finished by applying an aggregate layer or coating as the top layer.
Pitched roofs begin with with slopes greater than 3 in 12.
Metal roofs aren t waterproof in and of themselves but they can be treated with a coating that makes them so.
This top layer normally is tar over which the gravel is laid.
Table of low slope roofing options.
The following low slope roof system discussion is adapted paraphrased with permission from best practices guide to residential construction chapter on best roofing practices.