Low Slope Roof Shingles

Finding the right products for your low slope roof.

Low slope roof shingles.

Some building codes allow as low as a 2 slope with asphalt shingles if additional steps are taken. The membrane will outlast the shingles and seal around all nail penetrations. The majority of north american residential roofs have historically been constructed with a slope between about 4 12 and 9 12. But other than that a higher roof slope is much better for the shingles.

A handy roof slope estimator can help you determine if your roof slope is likely too low for shingles. That way water flows from the shingles onto the flange and continuing to flow down slope it flows back on the shingles. They typically had different underlayment recommendations for low slope roofs 2 12 to 4 12 pitches but that was about it. For a low slope residential roof there are two main options.

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. 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. Residential low slope roofing can generally be divided up into two broad categories.

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. Then apply standard asphalt shingles over the membrane. However those naysayers would be wrong. A 3 per foot slope is considered low but may be acceptable if a double layer of felt is used.

Iko roof fast 95 base is a self adhesive product that can easily be cold applied on low slope roofs. 3 tab shingles versus laminated shingles for low slope roof. Roofs at the lower end of the range about 4 12 to 6 12 are relatively easy to walk and work on. Low slope roofs present a challenge where water is concerned.

Low slope roofing shingles. I have to say having a low roof slope sure makes it more comfortable to install the shingles. The usual slope for asphalt shingles is a 4 or greater rise for every horizontal foot of run. 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.