Residential low slope roofing can generally be divided up into two broad categories.
Diy low slope roofing.
Technology of laying the roll roofing on a flat roof.
Low slope metal roofs require less material which reduces the overall load on the building s structure.
This means that low slope roofs don t require mechanical drainage solutions like asphalt shingles or slate.
Let the base sheet come out 6 inches.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.
If possible install roll roofing over a smooth plywood deck either perpendicular or parallel to the slope.
Install the low slope edge metal.
Then apply standard asphalt shingles over the membrane.
2 layers for low slope roofs 15 25.
4 layers if the roof is flat and the slope is 0 5.
You can t use the rolled roofing materials if the roof slope is more than 25.
The roofing should overhang the eaves by inch except where you install drip edge flashing on top of the roofing along the rake edge.
Only has to be 10 or so out from where it connects to the low slope roof.
It is mainly used for garages and sheds that have a.
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 from steep slope to low slope on the same structure.
Roll roofing is different.
Weatherproofing is especially critical in low slope assemblies because they drain water much slower than steep slopes.
Detail the area with mastic and membrane.
An underlayment of felt roofing is optional.
For a low slope residential roof there are two main options.
Remove and install the low slope roofing material.
Low slope roof systems must provide the following.
Install ridge shingles butting them close to the low slope roof transition.
Attain high marks for low slope roof installation posted november 30 2017 low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs.
Low slope roofs sometimes referred to as flat range from 0 inches per foot up to 4 inches in a foot of run.