Low Slope/Flat Roofing
Roof pitch is one of the most used terms in the roofing industry. (Also referred to as roof slope or roof slant.) The angle, or pitch, of a roof is determined by the number of inches it rises vertically for every 12 inches it extends horizontally.
So what does the 7/12 in the example to the right mean? The 7 means that the roof rises 7" for every 12" it runs.
Roofing types and roofing product are typically divided up into two primary categories: steep slope and low slope. Most single family homes are constructed with a pitch or slope to the roof, therefore steep slope roofing is referred to “residential” roofing. The term low slope roofing is synonymous with “commercial roofing” due to most commercial buildings have "flat”roof designs.
Low Slope Roofing
Roof pitches less than 4:12 are considered low sloped roofs. Special installation practices must be used on roofs sloped 2:12-4:12. Shingles cannot be installed at slopes less than 2:12. (must use a flat roofing product).
Most low-slope roof membranes have three principal components:
- Weatherproofing layer or layers — the weatherproofing component is the most important element because it keeps water from entering a roof assembly.
- Reinforcement — reinforcement adds strength, puncture resistance and dimensional stability to a membrane.
- Surfacing — surfacing is the component that protects the weatherproofing and reinforcement from sunlight and weather. Some surfacings provide other benefits such as increased fire resistance, improved traffic and hail resistance, and increased solar reflectivity.
Low Slope/Flat Roofs
In addition to standard and steep pitched roof systems, Cal-Vintage Roofing Company also installs low-sloped and flat roof systems over both residential and commercial roof structures.
All of our pitched and low-sloped roof systems are properly permitted and installed by factory-certified technicians according to the manufacturer’s specifications and the industry’s ‘best practice’ guidelines. You can be confident in choosing Cal-Vintage for your next roofing project knowing that your investment is thoroughly protected and well covered by both workmanship and manufacturer material warranties.
To learn more about low sloped roofing products, please click on the logos and go directly to their websites.