Roofing › Flat & Low-Slope Roofing
Low slope, zero shortcuts.
Porch roofs, additions, and flat sections need membrane systems — not shingles laid at the wrong pitch.
What's included
Systems we install
- EPDM rubber membrane — fully adhered or mechanically fastened
- TPO single-ply for heat reflectivity on sun-exposed roofs
- Modified bitumen for small porch and bay roofs
- Tapered insulation to build positive drainage
- New edge metal, drip, and termination bars
- Interior drains, scuppers, and overflow detailing
Worth knowing
Signs a low-slope roof is failing
- Standing water still present 48 hours after rain
- Seams lifting, blistering, or open at the laps
- Soft or spongy spots underfoot — saturated insulation
- Alligatoring and cracking on older built-up roofs
- Interior stains along the wall where a flat roof ties in
Straight talk
What to expect
Asphalt shingles are rated for 2:12 pitch and steeper. Below that, water sits instead of shedding and works under the courses — one of the most common installation failures we are called to correct on porch and addition roofs in older Philadelphia-area housing stock.