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Adept Construction · Since 1997
Flat Roof Repair and Replacement Contractor — EPDM, TPO and Modified Bitumen
Licensed & insured · Illinois Roofing License No. 104.011123
Book a Free Roof Inspection
We’ll call to confirm a time — usually within one business day
Or call (630) 360-2730 · Mon–Fri 8–6, Sat 8–4:30

Flat Roofing Specialists for Naperville, Downers Grove and DuPage County
Adept Construction, Inc. is a family-owned flat roof repair and replacement contractor serving DuPage County since 1997 from offices in Naperville, Downers Grove and Villa Park. We repair, replace and install flat and low-slope roofs in EPDM rubber, TPO and modified bitumen on homes, including flat-roofed additions, attached garages and porches, and on commercial buildings. See a recent flat roof replacement in Glen Ellyn; for offices, retail and other business properties, see our commercial roofing services.
Illinois roofing license No. 104.011123, Owens Corning Preferred Contractor, free roof inspections and a 10-year workmanship warranty on every new roof. For an active leak, call (630) 360-2730; otherwise request an estimate.
Flat Roof Repair in DuPage County
Yes, Adept Construction repairs flat roofs across DuPage County, and on most flat roofs a well-made repair is the right first step. Every repair starts with a free inspection, and if the roof is open or leaking we tarp it, usually within 24 hours. These are the failures we see most and how each one is fixed:
Seam failures
EPDM seams let go when the adhesive ages; TPO seams fail when they were under-welded. Open seams are cleaned and re-adhered or re-welded, and badly worn seams get a cover strip.
Ponding water
Water standing more than 48 hours after rain means a low spot or a blocked drain. Clearing the drain or scupper is the first fix; if the low spot is structural, tapered insulation or a cricket can be added when the roof is replaced.
Punctures and splits
Dropped tools, HVAC service, hail and foot traffic puncture membranes. Small punctures get a patch of the same membrane; splits along a seam or flashing get a cover strip.
Flashing and curb leaks
Most flat-roof leaks are at the edges, such as parapet walls, HVAC curbs, pipe boots and skylight curbs, not in the field of the roof. We re-flash with the membrane’s own flashing system, not caulk.
Blistering and alligatoring
Blisters on modified bitumen and built-up roofs are trapped moisture; alligatoring is the surface drying out. Both are repairable early and a recover or replacement late.
Flat-roof leaks rarely show up directly under the entry point; our roof leak detection guide covers how they are traced. When repair is no longer worth it, we quote a roof replacement instead. See all roof repair services, or the city pages: Naperville roof repair, Downers Grove roof repair.


Flat Roofing Systems We Install
EPDM rubber
Single-ply synthetic rubber, usually black, fully adhered or mechanically fastened. The most established flat-roof system in the Chicago area: it handles freeze-thaw well and is the easiest membrane to repair. Our first recommendation for garages, warehouses and roofs with many penetrations.
TPO
Single-ply thermoplastic, white, with heat-welded seams. It reflects summer heat, which lowers cooling cost on occupied buildings, and seams welded correctly are stronger than the sheet. Our recommendation for offices, retail and any cooled space.
Modified bitumen
Asphalt modified with APP (plastic) or SBS (rubber) polymers, reinforced with polyester or fiberglass, installed in two or three plies, torch-applied or self-adhered. Tougher underfoot than single-ply, so the right system where HVAC crews walk the roof. Repairs are covered in our modified bitumen repair guide.
Roof coatings
A silicone or acrylic coating over a sound, dry membrane can extend the life of a flat roof that is worn on the surface but still watertight underneath. It is not the right call over wet insulation or a roof that already leaks in many places, because the coating seals the moisture in and the roof fails anyway. We check the roof first and say on the written estimate whether a coating, a repair, a recover or a replacement is the better buy.
Which one? EPDM for roofs with many penetrations or that get walked on rarely; TPO for occupied, cooled buildings; modified bitumen where the roof gets foot traffic. We say which and why on the written estimate.
Get a Written Flat Roof Estimate — Repair, Recover or Replace
Products We Install
Modified bitumen: SBS and APP membranes with polyester or fiberglass reinforcement. Single-ply: EPDM and TPO membranes specified to the building. Coatings: silicone and acrylic systems matched to the membrane underneath. Every system is installed to the manufacturer’s specification so the manufacturer’s warranty can apply, and every new roof also carries Adept’s 10-year workmanship warranty in writing.

Hail and Storm Damage on Flat Roofs
Yes, Adept Construction repairs hail, wind and storm damage on flat roofs and helps with the insurance claim from the first inspection on. DuPage County flat roofs took real hits in 2026: on March 10, the National Weather Service in Chicago logged 4-inch hail measured just south of Downers Grove; on March 30, swaths of hail up to 2 inches crossed the central Chicago metro; and on July 27, EF-0 tornadoes touched down in Wheaton and Downers Grove. Hail bruises and punctures membranes, and wind lifts edges and flashing, often without a visible leak at first.
- Free storm inspection. We check the membrane, seams, edge metal, flashing, curbs and drains for punctures, bruising and lifted edges.
- Emergency tarping. If the roof is open or leaking, we tarp it, usually within 24 hours.
- Photos and a written scope. We document the damage and write an itemized scope your insurer can work from.
- Adjuster meeting. We meet your insurance adjuster on site when you ask us to.
- Repair or replacement. Once the claim is approved, we make the permanent repair or replace the roof if the damage is widespread.
After a storm, call (630) 360-2730 or see how our storm damage roof repair process works.
Flat Roofs on Commercial Buildings
Most commercial buildings in DuPage County have flat or low-slope roofs, and Adept Construction handles commercial roof repair and replacement on them with the same EPDM, TPO and modified bitumen systems described above. This page covers the roof systems themselves. For building owners and property managers, our commercial roofing contractor page covers commercial roof repair, replacement and storm claims, and you can see a commercial flat roof tear-off in Naperville.

How a Flat Roof Repair or Replacement Works
- Call or book online. Call (630) 360-2730 or book a free roof inspection. We call back to set a time, usually within one business day.
- Free roof inspection. We walk the roof and check the membrane, seams, flashing, drains and the deck, and look for signs of wet insulation. Inspections are always free.
- Written estimate: repair, recover or replace. You get the price in writing, with the system we recommend (EPDM, TPO, modified bitumen or a coating) and why, before any work starts.
- Permit, where your town requires one. Rules vary by village. Naperville, for example, requires a permit for sealed membrane roofs, so the permit is in place before work starts.
- Tear-off or recover, then installation. The crew removes the old roof where needed, repairs damaged decking and installs the new membrane and flashing.
- Cleanup and warranty. The crew cleans up the site, and you get Adept’s 10-year workmanship warranty in writing.
What Our Customers Say About Us
| 4.8 | ★★★★★ Excellent Based on 124 reviews |
✦ What customers say
Customers most often say owner Gerry Michaels comes out himself, explains the problem with photos and gives a fair, competitive quote. Many reviewers describe a full roof replacement finished in one or two days, crews that protect gardens and clean up every nail, and help with hail and storm insurance claims. Homeowners across DuPage County, from Naperville to Downers Grove, Villa Park and Lombard, also mention repeat work over 20 years or more, plus gutters, siding and skylights.
AI-generated summary of customer reviews, updated October 9, 2026.
Oct 2026 · Google
Gerry and the team were great to work with! Everything was done promptly and thoroughly. They remembered every detail!
Sep 2026 · Google
Adept construction did an excellent job installing our roof, gutters, and leaf guards. Good communication, and done on time.…
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…Price was competitive with the other quotes received. Would use them again.
Aug 2026 · Google
My wife and I could not be more pleased with the work provided by Adept. We had a roof and gutter replacement and both Gerry and…
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…his crews were very professional, with the work performed timely and efficiently. After the roof removal the cleanup process
was also done quickly and completely. I would highly recommend Adept Construction.
May 2026 · Google
After the recent hail storm I needed a new roof. I went to the Better Business Bureau and I found Adept Construction Inc. with…
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…an A+ rating. Mr. Michaels, the owner, came out and reviewed the findings of the insurance company and gave me a fair price. I gave him the okay to start and his team was out he next day. They were friendly, polite and professional. They completed my roof in one day and did a complete cleanup. The roof looks great! One last point, the communication on the process was excellent. At every point in the process Mr. Michaels was available to answer my questions. Thank you.
May 2026 · Google
Adept did a very nice job on my roof. I especially appreciated how well they treated my garden and cleaned up after themselves.
Apr 2026 · Google
I have to say Gerald and his team did a phenomenal job The roof Was…
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…finished in one day And the gutters, the next day
I personally like the fact that Gerald took the time to explain to me How the process worked And help me match up the colors For both the roof and gutters
I would highly recommend this company to anyone who’s looking for a quality top-notch affordable job
Show more reviews
Mar 2026 · Google
You and your crew were fantastic. Good work, cleanup and speed. Your guy that put the trim around the skylight did a great job.…
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…I’m glad my daughter Karyn Hudec recommended you. I will do the same if anyone asks!
Thanks
Mar 2026 · Google
Adept construction & Roofing ,Excellent working experience completed a flat roof repair ,tear off 3 old layers replaced with new roofing .1 day completed with excellent cleanup
Mar 2026 · Google
Adept replaced our roof over 20 years ago and serviced us well over that time. We were so happy with the service we contracted…
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…them again to do another roof. I would highly recommend Gerry and his team!
Sep 2025 · Google
From the time Gerry came out to provide an estimate through the completion of my roof replacement, I found working with Gerry to…
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…be a pleasure. He came prepared, answered questions directly, showed up when scheduled and completed the job on time. When I received the invoice it was exactly as quoted. I would recommend Gerry and Adept Construction with zero reservations.
Sep 2025 · Google
Great Company, Great workmanship and very clean work.
Aug 2025 · Google
They were recommended by our neighbor when we needed help replacing our old flat roof on our home. They were fairly priced, honest, knowledgeable and did a clean job.
Jul 2025 · Google
Gerry was great to work with and did a fantastic job in replacing and repairing the copper roof over the living room area of our…
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…house. We would happily work with Gerry and Adept Construction on future roofing projects.
Jul 2025 · Google
Incredibly efficient from consultation to completion. Highly recommend
Apr 2025 · Google
Great Job looked like alot of work but they handled it Great
Mar 2025 · Google
Replaced my roof. Great price. No problems at all. Would not hesitate to recommend.
Aug 2024 · Google
I am so pleased with how these professionals fixed my roof vent problem. I will certainly contact them again if I need something!
Aug 2024 · Google
Adept Construction installed a new roof on my home along with additional soffit vents. The work was excellent and they cleaned…
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…up the area after completion of the job in an exceptional manner/ The job was well planned with minimal impact on us while the job was being done.
Aug 2024 · Google
Adept was very responsive and provided excellent service from first contact to completion of our new roof. We were so pleased we recommended Adept to our neighbors.
Jul 2024 · Google
Review for Gutters and leaf guards installation.
My gutters were old and needs repairs or replacing. Some fasteners were failing…
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…affecting drainage flow. Some gutters overflowed.
Gerry addressed all my questions and concerns. He also suggested downspout changes to optimize drainage. I'm happy with the quality work and improvements.
Quick turn around: After accepting the quote Friday, I was surprised all work was completed by Tuesday.
Dec 2023 · Google
Adept Roofing
We highly recommend Adept Roofing Company to anyone considering re-shingling or repairing their roof. The owner,…
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…Gerry Michaels, knows the roofing business inside and out and was extremely helpful in providing options and different price points to us so to make the best-informed decision for our roofing needs. His team completed the two-day job on time, as promised. As the roof was only recently installed, we can only attest to its beauty at this point. As this is a long-term proposition, we will know over time how well the roof performs. We have no reason to doubt Adept and are very pleased so far with the performance of the roof. The pricing was competitive, as well. Another very important factor: Gerry is always available to answer questions and check on the roof if we ever have any concerns.
Dec 2023 · Google
Adept Construction was wonderful to work with. The owner took time to answer any and all questions I had and was always…
Read more
…responsive. He went above and beyond on this project. The work was done in a timely manner and I would highly recommend Adept Construction for any roofing needs.
Nov 2023 · Google
Gerry and his crew did an excellent job with the replacement of my roof, siding, gutters, soffit and fascia. They were very…
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…professional and knowledgeable. I highly recommend this company.
Oct 2023 · Google
Adept provided a fair quote for the work and completed with a skilled team in a timely fashion. Gerry went out of his way to…
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…match original details of our house while replacing some of the wood used for the eaves. Would recommend.
Aug 2023 · Google
My recent experience with Adept Construction for a porch roof repair was phenomenal. They responded quickly, came out to…
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…thoroughly evaluate the problem and provided recommendations. Upon acceptance of their proposal, they arrived at my house the following morning to begin repairs. Most importantly, all work was absolutely top-notch, and Gerry, the owner, was incredibly helpful and a pleasure to work with. Overall, a great experience from beginning to end. Highly recommended.
Jul 2023 · Google
I've been using Jerry and Adept construction for the over 30 years I've been in my house. That includes two roofs, new siding,…
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…gutters, sky lights and some miscellaneous stuff. Great service and quality. Jerry knows his stuff and runs "tight ship"
Jul 2023 · Google
Adept replaced our old leaking Skylight and chimney housing (also old…
Read more
…and leaking) for furnace vent, installed new vents on the roof for bathroom and Kitchen range hood, and enlarged soffit vents to fix poor attic ventilation.
Gerry came out and did an estimate the next day after I called. Among all the roofers we talked to, he was our favorite. He understood our concerns about each item we wanted to work on and the solutions he provided chimed in with the way we preferred to resolve the problems. His quote was not the lowest nor the highest, but had a reasonable price that we felt comfortable to pay and believed the project could be done well at. Also his quote was detailed, showing the process they were gonna perform and materials they were gonna use, as well as the price for each item. So we could decide what item we wanted do this time and easily figured out the total cost of them (The quote suggested to replace the gutter which was really old. But we decided to do it next time when replacing the roof). He and his office were responsive to my emails when I had questions about the quote. After I signed the contract, Gerry and two of his guys came out within a week. The two contractors worked the whole day and finished everything! It has been 1.5 months since then. We went through several storms. We don't see any leak so far. They did a good job!
Flat Roofing FAQs
How much does flat roof repair cost?
A flat roof repair is priced by the failure: a seam re-weld, a patch or a flashing repair is a single visit; a re-flash of a whole parapet or a section recover costs more. Widespread seam failure or wet insulation usually means a recover or replacement rather than a repair. Adept Construction quotes in writing after a free inspection; typical ranges are in our roof repair cost guide.
How long does a flat roof last?
It depends on the membrane, how well it was installed and how well it is kept up. The most common early failure on DuPage County flat roofs is ponding at a clogged drain, so keeping drains and edges clear and checking the seams and flashing each spring and fall, and after major storms, is the best way to get the full service life the manufacturer rates the membrane for.
EPDM or TPO: which should I choose?
EPDM (black rubber) handles freeze-thaw well, is the easiest membrane to repair and suits roofs with many penetrations or little foot traffic. TPO (white) reflects heat, lowering cooling cost on occupied buildings, and has heat-welded seams. Adept Construction installs both and recommends one for your building on the written estimate.
Can a flat roof be recovered instead of replaced?
Sometimes. Your town’s adopted building code sets the rule. Naperville, for example, reviews plans under the 2024 International Building Code, and IBC section 1512.3 does not allow a recover where the existing roof already has two or more layers. A recover also only makes sense when the deck is sound and the insulation underneath is dry; wet insulation means a tear-off. We check before recommending either.
Do you repair flat roofs on houses, or only commercial buildings?
Both. Adept Construction repairs and replaces flat roofs on homes across DuPage County, including additions, attached garages and porches, like this flat roof replacement in Glen Ellyn. For commercial buildings, see our commercial roofing services.
Why does my flat roof leak when it hasn’t rained much?
Flat-roof leaks usually come from seams, flashings and curbs rather than the field of the roof, and water can travel a long way along the deck before it shows inside. Ponding after light rain is also a sign of a blocked drain. Adept Construction traces the leak to its source before repairing.
Can you coat my flat roof instead of replacing it?
Only if the membrane is sound and the insulation underneath is dry. A coating over wet insulation traps the moisture and the roof fails anyway. We inspect the roof first, for free, and tell you on the written estimate whether a coating, repair, recover or replacement is the better buy.
Does a flat roof replacement need a permit in DuPage County?
It depends on the town, because each village sets its own permit rules. Naperville requires a building permit for sealed membrane roofs, which covers most flat roofs, and requires any roofer to hold an Illinois roofing license. Oak Brook asks for the contract, the roofer’s license and an HOA approval letter, and unincorporated areas go through DuPage County Building and Zoning. We check your town’s requirements before work starts.
Do you offer emergency flat roof repair?
Yes. If your flat roof is open or leaking after a storm or a puncture, Adept Construction tarps it, usually within 24 hours, and then schedules the permanent repair. Call (630) 360-2730.
Do you repair hail damage on flat roofs and work with my insurance?
Yes. After a free storm inspection, we photograph the damage, write an itemized scope your insurer can use and meet your adjuster on site when you ask us to. DuPage County saw 4-inch hail near Downers Grove on March 10, 2026, according to the National Weather Service.
Is the flat roof inspection really free?
Yes. Roof inspections from Adept Construction are always free, with no obligation, and you get a written estimate before any work starts.
Recent Projects
Recent Flat Roofing Projects
Real Adept Construction jobs — photos, materials and what we did on each one.
Flat Roof Leaking or Past Its Life?
Get a Written Estimate
Free inspections and written estimates across DuPage County — call the office nearest you or book your free inspection online.












