How much does flat roof repair cost?

Updated March 25, 2026 · Expert-verified answer

Quick Answer

Flat roof repair costs $300-$1,500. Leak patching: $200-$600. Recoating: $1,000-$3,000.

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Cost Breakdown

Service Low High Notes
Leak patching 200 600 Most common
Flashing repair 300 800 Around edges
Roof recoating 1000 3000 Extends life 5-10 years
Ponding correction 500 2000 Prevents damage

Flat Roof Repair Cost

Flat roofs require different repair approaches. Most repairs cost $300-$1,500.

Common Repairs

Leak patching: $200-$600. Flashing: $300-$800. Membrane seam: $200-$500. Drain repair: $200-$600.

Major Repairs

Ponding correction: $500-$2,000. Recoating: $1,000-$3,000. Partial replacement: $1,000-$3,000.

Materials

TPO/PVC: 20-30 year life. EPDM: 20-25 years. Modified bitumen: 15-20 years.

Maintenance

Inspect twice yearly. Keep drains clear. Remove debris. Address ponding quickly.

Related Questions

How often need repair?

Minor repairs every 3-5 years with proper maintenance.

DIY possible?

Simple patches yes. Professional ensures proper waterproofing.

How long do flat roofs last?

TPO/PVC: 20-30 years. EPDM: 20-25 years.