Commercial Roof Repair for Flat and Low-Slope Buildings.
A leak on a commercial roof can disrupt tenants and put a stop to operations. We find the source, fix it right, and give you the documentation your team needs, on TPO, EPDM, PVC, and coated systems across the Chicago area.
01 / Repair Before It Spreads
On a Commercial Roof, a Small Leak Gets Expensive Fast.
A flat roof holds water where a sloped roof sheds it, so a small opening in a membrane or a failed seam lets water sit and work its way into the building. Once it reaches the insulation and the deck, a minor repair turns into a wet roof assembly, interior damage, and downtime for the tenants below.
RX Roofing & Construction repairs commercial roofs throughout the Chicago area. We work on flat and low-slope systems of all sizes, from small storefronts to larger multi-tenant buildings. We come out, tell you the truth about what we find, and put it in a written summary either way. No pressure, no manufactured urgency.
02 / Signs a Repair Is Due
What Tells You a Commercial Roof Needs Attention.
Some of these show up inside the building, and some only show up on the roof. If you spot any of them, it is worth having us take a closer look before the next storm makes it worse.
Ponding Water
Water that sits on the roof more than a day or two after rain adds weight, speeds up membrane breakdown, and points to a drainage or slope problem.
Open or Failing Seams
Seams that have lifted, split, or come unwelded are one of the most common entry points on a single-ply membrane roof.
Blisters and Bubbles
Raised blisters in the membrane trap moisture and air. Left alone they grow, thin the surface, and eventually open up.
Flashing and Penetrations
Curbs, vents, drains, and wall transitions are where most commercial leaks start. Loose or cracked flashing lets water in at every one.
Punctures and Tears
Foot traffic, dropped tools, and rooftop equipment work can puncture a membrane. A small hole leaks the same as a large one.
Interior Stains
Ceiling stains, damp insulation, or drips inside the building mean water is already getting through and moving before it shows.
03 / What We Repair
Repairs on Every Common Commercial System.
We repair the flat and low-slope systems in use on commercial buildings across the area. When we find the source, we fix the cause, not just the symptom on the surface.
Membrane Repair
Patches, welds, and section repairs on TPO, EPDM, and PVC single-ply membranes. We match the repair method to the system you have so the fix bonds to the existing roof.
Seam Repair
Re-welding and resealing open or failing seams. On heat-welded systems we re-weld the seam back to a continuous, watertight bond.
Flashing and Penetrations
Repair and resealing at curbs, vents, pipe boots, drains, skylights, and wall transitions, the spots where commercial leaks most often begin.
Ponding and Drainage
We address the drains, scuppers, and low spots behind standing water so the roof sheds properly instead of holding weight and wearing out early.
Parapet and Edge Metal
Coping, edge metal, and parapet wall details take wind and weather at the perimeter. We reseal and refasten these edges to close a common leak path.
Coating Touch-Ups
On coated roofs we repair worn or damaged areas and recoat as needed to keep the surface sealed. For a full restoration, a coating system may make sense.
04 / Repair, Restore, or Replace
An Honest Call on What Your Roof Needs.
Not every commercial roof problem calls for a full tear-off. If the roof is sound overall and the damage is isolated, a targeted repair is usually the right move. If the membrane is at the end of its service life, or the same leaks keep coming back across the surface, patching gets more expensive than solving the problem for good.
We tell you which situation you are in. When a coating restoration or a full replacement is the better value, we say so, with the reporting your team needs to plan for it.
- Isolated damage usually means a targeted repair
- A coating can restore a sound roof without a tear-off
- We put the recommendation and the pricing in writing
05 / Storm Damage & Insurance
When a Storm Caused It, Your Policy May Cover the Repair.
Hail and wind damage are among the most common reasons building owners and property managers call us. When storm damage is the cause, your commercial property policy may cover the repair or the replacement.
We work directly with your commercial carrier. We document the damage with photos and written assessments that support the claim, handle the adjuster communication, and follow up through approval, with reporting your team can share with ownership at every step. You do not have to manage the insurance side of this alone.
06 / Stop the Next One Early
A Schedule Catches the Small Stuff Before It Leaks.
Most commercial leaks start as a lifted seam, a worn flashing, or a clogged drain that a routine visit would have caught. A maintenance schedule keeps a documented eye on the roof, fixes the minor items on the spot, and keeps your warranty standing.
- Seams, flashings, and drains checked on a set schedule
- Minor items fixed before they become leaks
- Written reports for your warranty and for planning ahead
07 / Common Questions
Commercial Roof Repair Questions, Answered Straight.
We repair the flat and low-slope systems most common on commercial buildings, including TPO, EPDM, and PVC single-ply membranes and coated roofs. We match the repair method to the system you have so the fix bonds to the existing roof instead of sitting on top of it.
It depends on the condition of the roof. If the system is sound overall and the damage is isolated, a targeted repair is usually the right call. If the membrane is near the end of its service life or the same leaks keep returning across the surface, repair costs climb toward the cost of a coating restoration or a replacement. We inspect it and tell you honestly which one fits, in writing.
Standing water that stays more than a day or two after rain usually points to a drainage or slope problem, a clogged drain or scupper, or a low spot in the roof. Ponding adds weight and speeds up membrane wear, so we address the cause rather than just patching the surface.
When the damage is caused by a covered weather event like hail or wind, your commercial property policy may cover the repair or the replacement. We document the damage, handle the adjuster communication, and follow up through approval, with reporting you can share with ownership.
Yes. We are licensed, bonded, and insured for commercial work, and we are happy to provide documentation before a project starts. We give you a clear written scope and reporting on every job, and we are A+ rated and accredited with the Better Business Bureau, with 5.0 on Google.
08 / Get Started
Get Your Commercial Roof Repaired.
Contact us to schedule a commercial roof inspection or repair, or call us at (224) 518-0278. We get on the roof, find the source, and tell you the truth about what we find, in a written summary either way. We are available Monday to Friday 7am to 7pm and Saturday 7am to 5pm.