The minimum pitch required for shingles is 2 12 which means for every 12 inches the roof rises 2 inches.
Low slope flat roof shingles.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.
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Built up roofing is the most popular roofing material used on low sloped roofs.
Most manufacturer and industry recommendations require or at the very least recommend special underlayment or other considerations on roofs between 2 12 and 4 12.
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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 luck.
Asphalt shingles should never be applied to roof slopes below 2 12 2 of vertical rise for every 12 of horizontal run or 9 5.
Small residential low slope roofing projects.
Made of several layers of bitumen surfaces built up roofing is finished by applying an aggregate layer or coating as the top layer.
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.
Because low slope roofs also drain water more slowly than moderate or steep sloped roofs systems such as slate or asphalt shingles that rely on mechanical drainage for successful performance are not used.
Flintlastic sa products feature easy and clean application and also have granulated surfaces with colors that coordinate with certainteed shingles providing the homeowner with a complete and coordinated solution for roof designs that.
Gaf asphalt shingles combined with the proper underlayment make ideal low slope roof shingles that do an excellent job of preventing water build up and leaking.
For the smaller residential low slope roofing applications such as garage and porch transitions certainteed offers an excellent solution in our flintlastic sa self adhering sbs modified bitumen roofing system.
For a low slope residential roof there are two main options.
Definition of low slope roofing.
Iko roof fast 95 base is a self adhesive product that can easily be cold applied on low slope roofs.
The membrane will outlast the shingles and seal around all nail penetrations.
A low slope roof is one that slopes 2 in 12 to 4 in 12 of run.
Any slope that has a pitch less than 2 12 is too flat for shingles and should be covered with flat roof materials such as tpo pvc epdm rubber or others.
Then apply standard asphalt shingles over the membrane.
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.