For a low slope residential roof there are two main options.
Low slope metal roofs for homes.
Tpo membranes are a polyester reinforced reflective covering made of a blend of rubber and plastic that can protect your roof from rain and the wind.
On low slope roofs like you have a water proof membrane like i ws is good insurance.
Low slope metal roofs provide years of low cost low maintenance performance.
Then apply standard asphalt shingles over the membrane.
Finding the right products for your low slope roof.
White single ply tpo membranes are a very popular choice for mobile homes with flat or low slope roofs.
A low slope roof is defined in the industry as a roof that has a pitch equal to 3 12 or less.
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.
Minimum metal roof slope depends on the roof profile building design climate and site location.
Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs.
But the taller profiles like standing seam and pbr shown below can be installed on roofs with as low as 1 4 or 1 2 in 12 pitch.
It is important to note structural metal panel roof systems can be used for steep slope roof assemblies too.
Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12.
Structural metal panel roof systems can be used for low slope roofs because of their hydrostatic or water barrier characteristics.
Low slope metal roofs have been a preferred roof covering for commercial institutional and industrial buildings for years because of their ability to protect against the elements to allow water to drain away from the roof surface and to keep building contents and occupants dry and comfortable.
Standing seam is the metal roof profile that has been gaining more popularity nowadays due to its clean and modern looks.
There are some opinions that standing seam metal roof minimum slope is 12 but it increases the possibility of leaking on the few first days of snow arrival.
At sheffield metals we also recognize low slope as 3 12 and below.
Residential low slope roofing can generally be divided up into two broad categories.
The membrane will outlast the shingles and seal around all nail penetrations.
Determining which panel is the right choice for the slope on your project will depend on the manufacturer s minimum slope factor for that specific panel profile.
Water that gets below both the roofing and underlayment will cause the same amount of problems whether it permeates the plywood or follows the pipe down.
Because of the shallow height of the undulating ridges of the 5v and corrugated profiles and the use of exposed metal fasteners to screw the metal to the roof deck they are limited to a slope that will shed rain quickly.
There is only one category of metal roof systems used in low slope applications structural metal panel.
