These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch.
Roof low pitch options.
For a low slope residential roof there are two main options.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many.
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.
The following low slope roof system discussion is adapted paraphrased with permission from best practices guide to residential construction chapter on best roofing practices.
Think of them as taking the middle road in terms of roof pitch not too flat not too steep.
5 12 to 12 12 pitch.
Built up roofing is the most popular roofing material used on low sloped roofs.
A minimum pitch of 3 in 12 or even 4 in 12 will normally be required.
This top layer normally is tar over which the gravel is laid.
For commercial buildings one of the other popular low pitch roof options is coated metal.
This coating helps reduce the instances of rust increasing the life span of the roof.
Table of low slope roofing options.
Metal roofs aren t waterproof in and of themselves but they can be treated with a coating that makes them so.
2 where the roof is not visible consider upgrading to a single ply roofing intended for low slope roofs.