How Much Does Flat Roof Repair Cost?
Repairing membrane, seams or ponding issues on flat/low-slope roofs.
How much does flat roof repair cost?
Repairing membrane, seams or ponding issues on flat/low-slope roofs. Most homeowners pay between $400 and $2,500 nationally, with a typical cost around $1,100. Use our calculator to adjust this range for your ZIP code.
What affects the price
- Membrane type (TPO/EPDM/mod-bit)
- Extent of damage
- Drainage correction
Repair vs. replacement
Membrane patching for isolated issues; recoating/replacement for widespread failure.
Questions to ask your contractor
- Patch or recoat?
- What's causing the ponding?
When to call a professional
Yes — membrane systems need specialized skill.
How we calculate this estimate
We start from national labor and materials benchmarks and apply a local cost factor based on your ZIP code and metro area, plus job complexity. Estimates are informational; actual contractor pricing may vary. Last reviewed 2026-05-01.
Frequently asked questions
What is the average cost of flat roof repair?
Nationally, flat roof repair typically runs around $1,100, with most jobs between $400 and $2,500. Your local price is adjusted by ZIP code.
Should I repair or replace?
Membrane patching for isolated issues; recoating/replacement for widespread failure.
When should I call a professional?
Yes — membrane systems need specialized skill.