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.
Low sloping roof materials.
The membrane will outlast the shingles and seal around all nail penetrations.
Section r905 regulates many different types of roof covering material.
Here is a list of the roofing materials regulated by the code.
Underlayme nt the typical 2 in the overlaps are 18 in.
25 12 to 3 12 standing seam metal.
Clay and concrete tile.
A low slope roof is one that slopes 2 in 12 to 4 in 12 of run.
Even standard asphalt roofing shingles can be used on roofs as low sloped as 2 5 in 12 as long as the underlayment is installed in a double coverage configuration.
4 12 to 20 12 wood and slate shingles.
Aluminum 2 asphalt fiberglass 1.
Most low slope roofing systems on the market utilize three main material options.
Shop our selection of low slope roofing products and save big on your roofing project.
1 12 to 19 12 clay or cement tiles.
For a low slope residential roof there are two main options.
This patented technology provides a durable finish with the ability to match existing roofing compositions.
Self adhesive flashing membrane under the shingles prevents leakage on low slope roofs.
In combination with iko roof fast cap sheets it provides waterproofing properties and durability for low slope roofs.
Then apply standard asphalt shingles over the membrane.
Roofing materials at a glance built up bur.
Now lets get into the minimum roof slope requirements based on the different types of roof covering material.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.
That simply means that there must be two layers of underlayment everywhere.
Iko roof fast base ma is a fiberglass reinforced nailable base with a special film surface designed to be used as one of iko s roof fast low slope roofing components.
25 12 to 3 12 torch down roofing.
25 12 to 3 12 rubber membrane.
So instead of lapping a 36 in.
2 5 12 to 19 12 asphalt composite shingles.
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.
Small residential low slope roofing projects.
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