The usual slope for asphalt shingles is a 4 or greater rise for every horizontal foot of run.
Low slope roof shingles.
However those naysayers would be wrong.
A handy roof slope estimator can help you determine if your roof slope is likely too low for shingles.
The membrane will outlast the shingles and seal around all nail penetrations.
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.
Then apply standard asphalt shingles over the membrane.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.
Roofs at the lower end of the range about 4 12 to 6 12 are relatively easy to walk and work on.
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.
Low slope roofing shingles.
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.
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.
Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2 12.
Residential low slope roofing can generally be divided up into two broad categories.
That way water flows from the shingles onto the flange and continuing to flow down slope it flows back on the shingles.
Iko roof fast 95 base is a self adhesive product that can easily be cold applied on low slope roofs.
For a low slope residential roof there are two main options.
But other than that a higher roof slope is much better for the shingles.
The majority of north american residential roofs have historically been constructed with a slope between about 4 12 and 9 12.
Finding the right products for your low slope roof.
3 tab shingles versus laminated shingles for low slope roof.
Some building codes allow as low as a 2 slope with asphalt shingles if additional steps are taken.
I have to say having a low roof slope sure makes it more comfortable to install the shingles.
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.