Commercial Roof Repair in St. Louis
Flat Roof Leaks, Storm Damage & Membrane Repairs
Commercial · Repair
Stop the leak. Find the cause. Fix it once.
Commercial roof leaks rarely live where the ceiling stain is. Revolve Construction diagnoses, documents, and repairs the actual source — not a Band-Aid that fails next storm. Membrane, flashing, drain, and seam repair across the St. Louis metro.
Why homeowners and businesses trust Revolve
Real diagnosis, not just patching
We trace water back to the actual entry point. Patching the wrong spot wastes your money.
Documented for insurance
If the damage is storm-related, we document to insurer-grade standards and help with the claim.
Maintenance that prevents repairs
Quarterly and biannual inspection programs catch problems while they're cheap. Most repairs are preventable.
What we offer
Membrane Repair
TPO, EPDM, modified bitumen — heat-welded, glued, or seamed back per the original system.
Flashing Replacement
Counterflashing, base flashing, and termination bars — the most common leak source in flat roofs.
Drain & Scupper Repair
Internal drains, scuppers, and overflow scuppers cleaned, resealed, and verified.
Seam & Termination Repair
Failed seams resealed; termination bars and metal flashing reattached.
Leak Diagnostics
Infrared scans, water tests, and probe inspections to pinpoint the actual leak path.
Storm Damage
Hail, wind, and tornado damage repair — documented and walked through your insurance claim.
Commercial Roof Leaks: Why the Obvious Patch Rarely Works
Commercial flat roofs fail at specific, predictable locations: flashing terminations at parapet walls, around pipe and HVAC penetrations, at seam intersections near drains, and at membrane transitions to adjacent systems. These are the locations where differential movement between building components creates stress concentrations — and where water, once it finds an entry point, migrates laterally under the membrane before showing up at the ceiling.
Patching the visible wet spot on the ceiling almost never fixes a commercial leak. The repair has to be at the membrane entry point — which requires an inspection that traces the water path from the interior damage back to the actual penetration. Revolve uses a combination of visual inspection, probe testing, and in appropriate cases infrared scanning to locate the real entry point before any repair material is applied.
Types of Commercial Roof Repairs We Perform
Membrane repair covers the full range of single-ply systems. TPO membrane repairs are heat-welded using the same equipment used for original installation — a properly welded repair patch is as strong as the original seam. EPDM repairs are lap-seam bonded using manufacturer-approved splice adhesive and seam tape. Modified bitumen repairs are torch-applied or cold-process depending on the existing system type. Repairs to the wrong system with the wrong method (caulk over TPO, incompatible adhesive on EPDM) fail quickly.
Flashing replacement is the most common commercial repair category. Counterflashing at parapet walls separates from the wall assembly with thermal movement. Base flashing at equipment curbs pulls away from vertical surfaces. Termination bars at the roof edge corrode or pull loose. Each of these is a defined repair with defined materials — metal flashing is reinstalled, sealed, and covered with compatible lap material.
Drain and scupper repair addresses the second most common source of commercial flat-roof water damage: blocked or damaged primary drainage. Internal drains are cleaned, the drain body inspected for cracks or deteriorated clamps, and the membrane transition sealed. Scupper openings are cleared, the opening transitions re-flashed, and overflow scupper function verified.
Preventive Maintenance: The Lowest-Cost Commercial Roofing Investment
The average commercial flat roof has a 20-year service life. In practice, roofs that receive annual or biannual inspections and minor repairs consistently outlast that — often by 5 to 10 years. The economics are compelling: a $400–$800 annual inspection with a minor-repair allowance avoids $500–$3,000 emergency repairs per incident, and extends the capital replacement cycle. Most commercial roof failures are preceded by a period of detectable degradation — membrane chalking, seam softening, sealant cracking — that a trained eye catches before it becomes a leak.
Revolve's commercial maintenance program includes written inspection reports with photo documentation after each visit, a defined minor-repair allowance for items identified during inspection, and a history log for each building that tracks membrane condition over time. When a roof is approaching end of life, we tell the building owner 2–3 years in advance — not after an emergency situation forces the capital decision.
Storm Damage Repair for Commercial Properties
Commercial flat roofs are not immune to storm damage — hail punctures single-ply membranes, high winds lift inadequately secured membrane edges and flashing terminations, and debris impact creates acute damage points. After a significant St. Louis storm event, Revolve prioritizes commercial inspection scheduling for properties with active leaks or visible damage.
Storm damage to commercial roofs is often insurance-covered under commercial property policies. Revolve provides inspection reports, photographic documentation, and measurements in the format commercial property adjusters expect. We have experience working with property management companies, building owners, and commercial insurance adjusters on multi-building storm claims.