Materials & Install October 28, 2026 5 min read Tulsa Roofing Pro Team
Flat and Low-Slope Roof Replacement on Tulsa Homes
Porches, patio covers, additions and mid-century homes often have a low-slope roof that needs a membrane, not shingles.
Most Tulsa houses have sloped shingle roofs, but many also have a flat or low-slope section: a back porch, a patio cover, a garage addition, or the whole roof on a mid-century modern house. Those sections need a different kind of roof, and they often wear out on a different schedule.
Where Flat Roofs Show Up
- Porch and patio roofs attached to the back of the house
- Room additions with a shallow shed roof
- Carports and garage additions
- Mid-century houses in Midtown and older Tulsa neighborhoods
- Dormers with very little pitch
Common Membrane Options
- TPO: a single-ply white or light membrane with heat-welded seams. It reflects summer sun, which helps in Tulsa heat.
- Modified bitumen: asphalt-based rolls, often with a granule surface. Common on smaller residential sections.
- EPDM: a black rubber membrane with glued or taped seams. Durable, but it runs hot in the sun.
- Low-slope metal: standing seam panels made for low pitches, used on some porches and additions.
Why Flat Roofs Fail in Tulsa
- Heat: long summers dry out and crack older asphalt surfaces.
- Ponding: water that sits for days after rain wears seams faster.
- Hail: it can bruise and puncture membranes as well as shingles.
- Tie-ins: the joint with the main roof or wall is the weak point.
Questions to Ask
- What is the slope of this section, and what system suits it?
- Will the old roofing be torn off and the deck checked?
- How will water drain: to the edge, a gutter or a scupper?
- Will the flat section and the main roof be done together?
For the main roof, see roof replacement in Tulsa and roofing materials for the Tulsa climate.
