Pros cons of roll roofing bur modified bitumen epdm roof systems.
Roof low pitch options.
While weighing the options for replacing a small low slope porch hip roof i quickly rejected half lap mineral surfaced roll roofing.
This coating helps reduce the instances of rust increasing the life span of the roof.
Metal roofs aren t waterproof in and of themselves but they can be treated with a coating that makes them so.
The following low slope roof system discussion is adapted paraphrased with permission from best practices guide to residential construction chapter on best roofing practices.
Made of several layers of bitumen surfaces built up roofing is finished by applying an aggregate layer or coating as the top layer.
This was confirmed in a 2005 study of low slope roofing conducted by ducker international.
Think of them as taking the middle road in terms of roof pitch not too flat not too steep.
Reshingling a low slope roof and a few things not to do this article covers reshingling a low sloped roof and a few things you should avoid when shingling such a roof.
Visiting my sister marlene in thunder bay this summer 2012 there was as usual a project like every other time.
This top layer normally is tar over which the gravel is laid.
Respondents to the study said they expected the life cycle cost of a metal roof including outlays for maintenance to be about 30 cents a square foot per year far less than their expectations for built up and single ply roofs at 37 cents and 57 cents.
These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch.
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.
Table of low slope roofing options.
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.
It would have to be redone or coated in eight to ten years if not sooner.
Larger flat roofed applications low slope such as residential condominium complexes row homes and town houses and smaller applications such as residential porch and garage transitions from the main home where the slope of the roof changes dramatically from steep slope to low slope on the same structure.
5 12 to 12 12 pitch.