KPro
Home/Services/Flat Roof Repair
Flat Roof Repair

Flat roof leak?
We patch it right.

Most flat roof leaks are at penetrations, seams, or drains — not the field membrane. KPro fixes the actual source, not just where the water shows up.

Flat Roof Repair St. Louis
Real KPro Project · St. Louis
Commercial expertise

Built for the building, not the bid sheet.

Every flat roof repair project KPro takes on starts with a free 24-hour drone inspection. We document everything before we touch a single shingle, fastener, or membrane — and you get those photos and the written assessment whether you proceed or not.

Our St. Louis customers have been telling us the same thing for 6 years strong: the difference is in the details. Three magnet sweeps for nails. Final drone inspection before sign-off. Two rounds of rain test for any roofing work. Owner on-site for every insurance adjuster meeting.

From Manchester to Chesterfield, Wildwood to Ballwin, Kirkwood to Town & Country — KPro has installed, repaired, and maintained flat roof repair across every St. Louis suburb. Family-owned since 2020. 4.9 stars on 160+ verified reviews.

What you get

Where flat roofs actually leak.

Diagnosing a flat roof leak is half the battle. Water travels horizontally under the membrane and shows up far from the source. Here's where we look first.

Drain bowls. Most common leak source. Strainer dislodged, bowl flashing failed, or water bypassing the drain entirely from clogged primary.

Curbs and penetrations. HVAC mounts, plumbing vents, equipment supports. Caulk fails, flashings lift.

Seam splits. EPDM cold-bonded seams, TPO weld failures. Both repairable with proper materials.

Edge metal. Coping caps, gravel stops, parapet flashings. Often overlooked, frequently the culprit.

Our process

Flat roof repair process.

1

Free Inspection

On-site within 24 hours. Drone aerial photos, ground walkthrough, written assessment. Free even if you don't proceed.

2

Detailed Estimate

Itemized: materials, labor, warranty terms. No surprises, no hidden fees.

3

Schedule & Install

Materials delivered the morning of. Crew on-site at 7am. Most residential jobs finish in one day.

4

Walkthrough

Three magnet sweeps for nails, final inspection together, you sign off. Manufacturer + KPro labor warranty on file.

Service Area

Flat Roof Repair across St. Louis & beyond

KPro provides flat roof repair services throughout the St. Louis metropolitan area and surrounding Missouri suburbs, plus Quincy, IL.

Frequently asked

Flat Roof Repair FAQ

Common questions about flat roof repair in the St. Louis area. Don't see yours? Call (636) 386-7499.

How long does a flat roof repair take?+

Most repairs same-day. Drain replacements 4–8 hours. Larger seam restoration projects 1–2 days.

Will the patch match?+

Yes — TPO welds clean, EPDM patches blend after weathering. Functionally seamless.

Can I keep using the building during repair?+

Yes. We work around your operations. Most flat-roof repairs are non-disruptive to interior.

How much does flat roof repair cost?+

Small repairs (drains, single seam) $400–$1,500. Medium (multiple penetrations) $2,500–$6,000. Larger restoration projects priced by scope.

Where do you provide flat roof repair services?+

KPro provides flat roof repair across the entire St. Louis metropolitan area including Manchester, Chesterfield, Wildwood, Ballwin, Kirkwood, Town & Country, Ellisville, Creve Coeur, Webster Groves, Wentzville, O'Fallon, St. Peters, Festus, and more — plus Quincy, IL on the Illinois side. Call (636) 386-7499 to confirm we serve your specific zip code.

How fast can I get an estimate?+

Same-week scheduling for all standard estimates. Same-day response for active leaks or storm damage. We provide a written, itemized estimate within 24 hours of the on-site inspection.

Related Services

You might also need

Ready to get started?
Free estimate in 24 hours.

No obligation. Real St. Louis roofers since 2020. Bilingual crew. Owner on every claim.