Flat & Low-Slope Roofing
GEJ Roofing installs flat and low-slope roofing systems for porches, additions, garages, and other sections of a home that don’t have enough pitch for standard asphalt shingles. These roofs use a rolled membrane system instead, sealed and flashed to keep water out where a shingle roof simply can’t be used.
Why Flat Roofs Need a Different System
Asphalt shingles rely on a steep enough slope to shed water quickly. On a flat or low-slope section – common on porches, additions, garages, and some commercial buildings – water can sit long enough to work its way under shingles, so these sections need a continuous, sealed membrane instead. Done right, a membrane roof handles standing water and temperature swings without the leaks a shingle roof would develop in the same spot.
What’s included
- Tear-off of the old roofing system
- Deck inspection and repair of any damaged sections
- Insulation board where called for
- Rolled membrane installation, fully sealed at seams
- Flashing and sealing at walls, parapets, and penetrations
- Cleanup and final walkthrough
A Real Example: Flat Roof Replacement, 2018
GEJ Roofing installed this flat roof membrane on a residential low-slope section in Tennessee on August 24, 2018, when the business operated as a sole proprietorship – before it was formalized as GEJ Roofing LLC in 2025.
Warranty on This Work
Flat and low-slope roofing is backed by the same 5-year workmanship warranty GEJ Roofing puts behind every job, under normal conditions. See GEJ Roofing’s full warranty details.
Request a Roofing Estimate
Tell GEJ Roofing about your flat or low-slope roof and get an honest, on-site conversation about materials and cost.