Exterior Commercial Services
Flat Roof Repair
Commercial flat roof leak repair from crews who have worked on thousands of low-slope roofs since 1990.
Flat and low-slope roofs are the standard for commercial, industrial, and multi-family buildings across the DMV, and they fail in predictable ways: seams open, flashings crack, drains clog, and water ponds. TopKey repairs all of them. Our crews have repaired thousands of flat roofs on warehouses, offices, shopping centers, schools, and apartment buildings in Maryland, Northern Virginia, and Washington, D.C.
Searching for “flat roof repair near me” usually means water is already inside the building. Call 301-245-2070. We will find the source, stop the leak, document the repair with photos, and tell you honestly whether the rest of the roof is sound.
What we do
Flat Roof Repair Services
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Leak detection and repair
Infrared and probe moisture surveys that locate where water is actually entering the roof, which is often far from where it shows up inside.
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Seam and membrane repair
Heat-welded, adhesive, and torch-applied repairs on TPO, PVC, EPDM, and modified bitumen.
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Ponding water correction
Tapered insulation, added drains, and scupper repairs to restore drainage.
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Flashing and curb repair
Wall, curb, pipe, and edge metal flashings rebuilt to manufacturer detail.
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Wet insulation replacement
Targeted removal and replacement of saturated insulation so repairs actually hold.
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Restoration coatings
Silicone and acrylic coatings that seal an aging but sound flat roof for another 10 to 20 years.
Benefits
Why Owners Choose TopKey for Flat Roof Repair
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Root-cause diagnosis
We trace water to its entry point, so the repair holds.
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All flat roof systems
TPO, PVC, EPDM, modified bitumen, built-up, and coated roofs.
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Photo-documented repairs
Before and after photos and a written report for your files and your warranty.
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Honest repair-or-replace advice
We tell you when a repair makes sense and when it is throwing money at a roof that is done.
How it works
Our On-Time and On-Budget Process
Four steps from first call to finished project. No surprises at completion.
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Talk to a Professional
Call 301-245-2070 or send a request online. A TopKey team member answers your questions and scopes the first visit.
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Site Visit
We come to your property, walk the building with you, and listen to what the space needs to do.
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Estimate
You receive an accurate proposal with a realistic timeline, backed by decades of commercial construction experience.
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Job Execution
Our crews complete the repair or renovation with minimal disruption to tenants, staff, and operations.
Testimonials
What property managers say
“Top Key has done several jobs for me at various locations. We are pleased with the prompt response and attention to detail in taking care of our needs. Top Key has worked on roof repairs, stairwells, leaks, asphalt repairs, roof hatch, bollards, etc. Top Key has done top notch work and I highly recommend this company for any and all projects.”
“TopKey Construction did a number of projects at my commercial building in Md. They did parking lot restriping, and office buildouts that included beautiful, specialized accent walls. The company was efficient clean, and very easy to work with. The work was done in a timely fashion. I would highly recommend them.”
“St. John's School in Clinton, MD has used TopKey for the past 3 summers for major construction projects to enhance the safety of our school as well as making it more energy efficient with new windows. From the sales rep to the project manager to the technicians themselves have always been professional and courteous. They are always vigilant of when students are on campus and respect their safety. We would strongly recommend TopKey for any project large or small.”
“Glen, Duane, Nancy and your team did an awesome job on the Columbia Park project. Brought to light some unsafe conditions with one of the electrical panels and repaired. Addressed the hot water heater and fountain wiring issues which were outside of the original scope of work. The overall work performed was outstanding and within the scheduled time-line despite some unforeseen items that arose with the warehouse demo portion. Thank you!”
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Service area
Flat Roof Repair Across Maryland, Northern Virginia & DC
From our Laurel, Maryland headquarters, TopKey crews serve commercial and multi-family properties within roughly 50 miles, covering Maryland, Northern Virginia, and Washington, D.C.
FAQ
Flat Roof Repair Questions, Answered
Why does my flat roof keep leaking after repairs?
Usually because the previous repair patched where water appeared inside rather than where it entered the roof, or because wet insulation was left in place. A moisture survey solves both problems.
How long do flat roof repairs last?
A properly executed repair on a sound roof should last the remaining life of the roof. Repairs on a roof with saturated insulation or widespread membrane failure are temporary by nature, and we will tell you if that is the situation.
Do you repair flat roofs on apartment buildings?
Yes. Multi-family flat roof repair is a large part of our work, including garden apartment communities with dozens of buildings and high-rise roofs with limited access.
Related Services
Talk to a flat roof repair professional today.
Schedule a free consultation and site visit. We will walk the property, listen, and deliver an accurate estimate with a realistic timeline.
- Job completed on time. On budget.
- 100% customer satisfaction guarantee.
- Absolutely 0 surprises at completion.
- Professionally trained technicians.