Low Slope Roof Shingles

Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2 12.

Low slope roof shingles.

However those naysayers would be wrong. Roofs at the lower end of the range about 4 12 to 6 12 are relatively easy to walk and work on. 3 tab shingles versus laminated shingles for low slope roof. Low slope roofs present a challenge where water is concerned.

That way water flows from the shingles onto the flange and continuing to flow down slope it flows back on the shingles. A handy roof slope estimator can help you determine if your roof slope is likely too low for shingles. The usual slope for asphalt shingles is a 4 or greater rise for every horizontal foot of run. The majority of north american residential roofs have historically been constructed with a slope between about 4 12 and 9 12.

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. For a low slope residential roof there are two main options. Residential low slope roofing can generally be divided up into two broad categories. I have to say having a low roof slope sure makes it more comfortable to install the shingles.

It s constructed of a durable reinforcing mat of non woven glass fibers that have been coated and permeated to a thickness of approximately 2 0 mm. A 3 per foot slope is considered low but may be acceptable if a double layer of felt is used. With respect to shingle application roof slopes from 2 12 to less than 4 12 18 5 are called low slope roofs while roof slopes of 4 12 or greater are called normal or standard slopes. If you have a low slope roof but would love to have a shingled look rather than other solutions like rolled sheet roofing you are in.

The membrane will outlast the shingles and seal around all nail penetrations. Some will argue that shingles shouldn t be used for low pitch roofs at all. Then apply standard asphalt shingles over the membrane. Finding the right products for your low slope roof.

Some building codes allow as low as a 2 slope with asphalt shingles if additional steps are taken. They typically had different underlayment recommendations for low slope roofs 2 12 to 4 12 pitches but that was about it. And by the way the manufacturers instructions i reviewed for the shingles i was interested in buying described installations down to a 2 12 pitch. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.