Home / Commercial Roofing Contractor in DuPage County
Adept Construction · Since 1997
Licensed & insured · Illinois Roofing License No. 104.011123
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
Adept Construction, Inc. installs, repairs, replaces and maintains commercial roofs across DuPage County from offices in Naperville and Downers Grove. Most of our commercial work is low-slope: EPDM rubber, TPO and modified bitumen membranes on the retail, office, medical and light-industrial buildings along Ogden Avenue, Route 59, Butterfield Road and the I-88 corridor, plus the flat-roofed condominium and HOA buildings in between. We also put standing-seam metal on commercial buildings and architectural shingle on low-rise offices and multi-family. Illinois roofing license No. 104.011123 (commercial and residential), Owens Corning Preferred Contractor, general liability and workers’ compensation insurance, since 1997.
Property managers get one point of contact, a written scope with photos before any work starts, and a maintenance record for every roof we touch. For an active leak, call the nearest office — Downers Grove (630) 964-8708, Naperville (630) 360-2730 — or request a site visit.
Seam failures, membrane punctures, ponding, flashing and curb leaks, and storm damage on EPDM, TPO and modified bitumen roofs. We locate the leak from the interior stain back to the source, repair the membrane and flashing, and document the repair for your building file. Emergency response for active leaks. City pages: Naperville, Downers Grove.
Full tear-off to the deck, or a recover over one existing layer where code and the deck allow — we tell you which in writing after a core cut and a moisture survey. New insulation to current energy code, tapered systems to fix ponding, and a manufacturer warranty on the membrane. Our guide to commercial re-roofing cost explains what drives the price.
New construction and additions, from deck inspection through membrane, insulation, flashing and drains, on the builder’s schedule. See roof installation.
Twice-yearly inspections (spring, after the hail season starts, and fall, before freeze-up), drain and scupper clearing, seam and flashing checks, and a photo report each visit. A maintained flat roof lasts 20 to 30 years; an unmaintained one fails at the drains in 10 to 15.
Condition assessments for purchases, lease turnovers, insurance and capital planning, with photos, a moisture survey where warranted, and a remaining-life estimate. Our guide to commercial roof inspection cost explains what an inspection includes.
Hail bruises TPO and EPDM membranes and cracks modified bitumen surfacing; wind lifts flashing and displaces ballast. After a warned storm we inspect, photograph, write the scope your insurer needs and meet the adjuster. See the storm damage page.
Silicone and acrylic coating systems that extend a sound but aging membrane roof by 10 to 15 years at a fraction of replacement cost — the right call when the deck and insulation are dry and the membrane is simply weathered. Not the right call over wet insulation, which is why the moisture survey comes first.
Since 1997, from two offices inside DuPage County. Illinois roofing license No. 104.011123, verifiable on the IDFPR roofing contractor page. Owens Corning Preferred Contractor; BBB Accredited, A+. Written scope with photos before work starts; a maintenance record for every roof; the manufacturer’s membrane warranty plus our 10-year workmanship warranty. One point of contact from site visit to final inspection.
Nine of ten commercial roofs in the western suburbs are low-slope, so most of what we install is single-ply membrane or modified bitumen. Standing-seam metal covers the rest of the commercial work, and architectural shingle goes on low-rise offices, restaurants and multi-family buildings with pitched roofs.
EPDM rubber and TPO membranes on roofs with a pitch under 2:12 — the system on most commercial buildings in DuPage County. Mechanically fastened or fully adhered, installed over tapered insulation to eliminate ponding, with a manufacturer warranty of 15 to 30 years.
Torch- or self-adhered modified bitumen and multi-ply built-up roofing for buildings with heavy foot traffic or many penetrations, and silicone and acrylic coating systems that add 10 to 15 years to a sound membrane roof at a fraction of replacement cost.
Owens Corning architectural shingles on pitched low-rise offices, restaurants, and multi-family and HOA buildings — the same system as residential, specified and warranted for the building.
Molded polymer slate and shake for pitched commercial and institutional buildings where the look matters — churches, clubhouses, office buildings in Hinsdale and Oak Brook — without the weight of slate.
Retail and medical along Ogden Avenue and Route 59, the office parks on Diehl Road and the I-88 corridor, and the restaurant and mixed-use buildings downtown. Commercial roofs in Naperville always require a city permit; we pull it. Office: 27W225 79th St. See Naperville roofing.
The office and retail buildings along Ogden Avenue and Butterfield Road, the light-industrial buildings in Westmont, and the condominium associations between them. Office: 6509 Hathaway Ln. See Downers Grove roofing and Westmont.
Industrial and warehouse roofs along North Avenue and the St. Charles Road corridor. See Villa Park and Lombard.
Office buildings, clubhouses and institutional roofs where composite slate or shake is specified for appearance. See Hinsdale and Oak Brook.
The distribution and warehouse roofs along I-55 and I-88 — the largest flat roofs we work on. See Aurora.
Commercial roofing is priced per square (100 sq ft) by system, with the biggest variables being tear-off versus recover, the insulation thickness code requires, drain and curb count, and access. A moisture survey before the estimate is what keeps the price from changing after the tear-off. Typical ranges are in our guides to commercial re-roofing cost and commercial roof inspection cost, or request a site visit and written scope.
✦ 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.
Commercial roof replacement is priced per square (100 sq ft) by system — EPDM and TPO membrane, modified bitumen, built-up or shingle — with tear-off versus recover, required insulation thickness, drain and curb count and access as the main variables. Adept Construction provides a written scope after a site visit and moisture survey; typical ranges are in our commercial re-roofing cost guide.
A commercial roof inspection from Adept Construction is free when it leads to a repair or replacement estimate. Stand-alone condition assessments for purchases, leases or capital planning — with photos, a moisture survey and a remaining-life estimate — are quoted by roof size; see our commercial roof inspection cost guide.
Both work in the western suburbs. EPDM (black rubber) is the more established system, handles freeze-thaw well and is the easier repair; TPO (white) reflects summer heat, which lowers cooling cost on air-conditioned buildings, and is heat-welded at the seams. Adept Construction installs both and recommends by building: TPO for occupied, cooled space; EPDM for warehouses and roofs with many penetrations.
A maintained EPDM or TPO roof lasts 20 to 30 years; modified bitumen and built-up roofs 20 to 25; a sound membrane that is coated gains another 10 to 15. The most common early failure on DuPage County commercial roofs is ponding at clogged drains, which is why Adept Construction’s maintenance program clears drains twice a year.
Sometimes. Illinois follows the International Building Code, which allows a recover over one existing roof layer when the deck is sound and the existing insulation is dry. Adept Construction takes a core cut and runs a moisture survey first; if the insulation is wet, the roof is torn off. The written scope says which and why.
Yes. Adept Construction’s commercial maintenance program includes two inspections a year, drain and scupper clearing, seam and flashing checks, minor repairs on the spot and a photo report after each visit, with a maintenance record kept for the building.
Yes. For an active leak, call the nearest office — Downers Grove (630) 964-8708 or Naperville (630) 360-2730. Adept Construction provides emergency repairs within 24 hours and documents the temporary repair for the insurance file.
Usually, when the damage is from a specific storm. Adept Construction inspects, photographs and documents hail and wind damage on membrane and shingle roofs, writes the scope the carrier needs and meets the adjuster on site. See our storm damage page.
Yes — every municipality in the county requires a building permit for commercial roof replacement, and most for commercial roof recovers. Naperville and Downers Grove both require one. Adept Construction pulls the permit and schedules the inspection as part of the job.
Yes. Adept Construction holds Illinois roofing contractor license No. 104.011123 from the Illinois Department of Financial and Professional Regulation, carries general liability and workers’ compensation insurance, and is an Owens Corning Preferred Contractor. Verify any Illinois roofer on the IDFPR roofing page.
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