| Quick Answer: Inside & Out Roofing, Painting & Gutters repairs low slope and flat commercial roofs across Denton, Collin, Dallas and Tarrant Counties, covering TPO, EPDM, modified bitumen and flat metal systems, plus reflective coatings. On site assessment is often available within 24 hours and every project is owner supervised. Most low slope leaks begin at details such as penetrations, seams, terminations and drains rather than in the field of the membrane, so the first job is finding the actual source. Call (214) 449-4306. |
A low slope roof fails differently from a pitched one. There is no gravity doing half the work, so water sits where the roof lets it sit, and a defect that would be harmless on a shingle roof becomes a leak. The other difficulty is that the leak rarely appears above the fault. Water tracks along the deck and shows up somewhere else entirely, which is why a repair that chases the ceiling stain usually fails. This article covers who repairs low slope commercial roofs in the Dallas Fort Worth area, where leaks actually start, how each system is repaired, and when a coating makes more sense than a replacement.
Who Repairs Low Slope Commercial Roofs in the DFW Area?
Inside & Out Roofing, Painting & Gutters handles commercial low slope work across four North Texas counties from a fixed office at 2308 Hollyhill Lane in Denton, family owned since 2011. On site assessment is often available within 24 hours, which matters when a building is actively taking water, and every project is owner supervised rather than handed to a crew and left.
The systems covered are TPO, EPDM, modified bitumen and flat metal, along with reflective coatings that reduce heat gain through the roof assembly. Our commercial roofing service covers repair, recovery and replacement across all of those.
For a building owner or facilities manager the practical questions are response time, whether the company can work on the system you actually have, and whether the same people will be reachable when the warranty matters. A fixed local address answers the third one.
Where Do Low Slope Roof Leaks Actually Start?
At the details, not in the middle of the membrane. The field of a low slope roof is the part most likely to still be sound, which is why a thorough assessment spends its time at the edges and the penetrations.
- Penetrations: vents, pipes, conduit, curbs and anything mechanical sitting on the roof.
- Seams and laps, particularly where they have been reworked or patched before.
- Terminations at parapet walls, counterflashing and coping.
- Drains, scuppers and the low points around them where debris collects.
- Ponding areas, where water sits long after rain and works on the assembly.
- Damaged or saturated insulation under an otherwise intact membrane.
Because water tracks along the deck before it finds a way through the ceiling, the stain inside is a symptom rather than a map. Locating the entry point is the first part of the job and the part most often skipped.
How Are TPO, EPDM and Modified Bitumen Repaired Differently?
Each system has its own repair method, and using the wrong one creates a patch that fails within a season. TPO is a thermoplastic, so repairs are heat welded, and a correctly welded patch becomes part of the membrane rather than something stuck on top of it.
EPDM is a synthetic rubber and is repaired with compatible adhesives, primers and seam tape rather than heat. Surface preparation matters a great deal, because contamination under a patch is the usual reason an EPDM repair lets go.
Modified bitumen is repaired with compatible membrane and either torch applied or cold applied methods depending on the original system and the building conditions. Flat metal is a different discipline again, where the work concentrates on seams, fasteners and panel movement.
Compatibility is the thread running through all of it. A patch in the wrong material, or the right material with the wrong adhesive, will not bond properly. The National Roofing Contractors Association maintains industry guidance on repair and maintenance practice for low slope systems in its technical resources.
When Is a Coating the Right Answer Instead of a Replacement?
A reflective coating suits a roof whose membrane is fundamentally sound but weathered, where the details can be repaired and the insulation beneath is dry. It restores the surface, seals minor defects and reduces heat gain, which is a real benefit through a North Texas summer.
A coating is the wrong answer when the insulation is saturated, when the membrane has failed across the field rather than at details, when there is widespread ponding caused by a drainage problem the coating will not fix, or when the assembly has been recovered so many times that the deck cannot carry more. Coating over a wet assembly traps the moisture and you pay for the roof twice.
The way to tell them apart is a proper assessment, including checking whether the insulation under the membrane is dry. Any recommendation to coat that was made from the parking lot is not a recommendation.
How Quickly Can a Commercial Roof Be Assessed After a Leak?
On site assessment is often available within 24 hours, and for an active leak that speed is worth more than it sounds. Water moving through a roof assembly damages insulation, decking, ceilings and whatever the tenant has underneath, and the cost of the damage usually overtakes the cost of the repair quickly.
The immediate priorities are stopping the ingress and protecting the interior, then finding the actual source rather than the nearest plausible one. Temporary measures are legitimate and often necessary, but they are a holding action and should be described that way rather than sold as a repair.
After that you should get a written scope describing what was found, what is being repaired, which materials are being used and how the work interacts with any existing warranty on the roof.
Where the damage came from a storm rather than age, the documentation matters for a second reason. Commercial buildings carry insurance too, and dated photographs taken at the first assessment are what support a claim later. Our storm and hail insurance claim support covers commercial properties as well as homes.
What Should a Commercial Roof Repair Quote Include?
Enough detail that a facilities manager could compare it against another quote line by line, and enough that the building owner knows what is not included.
- The system identified correctly, with the repair method named and compatible materials specified.
- The specific locations and details being addressed, not just a square footage.
- Whether wet insulation was found and what is being done about it.
- How drainage and ponding are being handled, if at all.
- Access, safety and any out of hours working the building requires.
- Warranty terms for the repair, and whether the work affects an existing manufacturer warranty.
Assessment is free and the written scope comes before work is scheduled.
Frequently Asked Questions
Why does the leak inside not line up with the damage on the roof?
Water entering a low slope roof tracks along the deck or between layers until it finds a path through the ceiling, so the stain is often some distance from the entry point. This is why repairs that target the ceiling stain usually fail and a proper assessment traces the source first.
Can you repair a flat roof in winter or does it have to wait?
Most low slope repairs can be carried out year round, though the method may change with conditions since adhesives and welds behave differently in cold or damp weather. An active leak should never be left to wait for better conditions, because the interior damage keeps accumulating.
How do I know whether my roof is TPO, EPDM or modified bitumen?
An assessment identifies it, and getting it right matters because each system takes a different repair method and incompatible materials will not bond. If previous work used the wrong material, that often shows up as patches that have lifted or failed early.
Does ponding water on a flat roof always mean a problem?
Low slope roofs are designed to drain rather than to hold water, so water still standing well after rain points to a drainage or slope issue. It accelerates wear on the membrane and the area around it, and it is worth assessing before it becomes a leak rather than after.
Will a repair void my existing roof warranty?
It can, if the work is carried out with incompatible materials or outside the manufacturer requirements. That is why the quote should state which materials are being used and whether the repair affects an existing warranty, and why identifying the original system correctly is the first step.
Flat or low slope roof leaking in DFW? Call Inside & Out Roofing, Painting & Gutters at (214) 449-4306 or book a free assessment online.
Key Takeaways
- Low slope leaks almost always begin at details such as penetrations, seams, terminations and drains rather than in the field of the membrane.
- The stain inside is a symptom, not a location. Water tracks along the deck, so the entry point has to be traced rather than assumed.
- TPO is heat welded, EPDM is repaired with compatible adhesives and tape, and modified bitumen needs matching membrane. The wrong method fails within a season.
- A reflective coating suits a sound but weathered membrane with dry insulation. Coating over a saturated assembly means paying for the roof twice.
- On site assessment is often available within 24 hours, which matters because interior damage from an active leak outruns the repair cost quickly.
- Commercial projects are owner supervised and the written scope comes before scheduling. Book an assessment.