Skip to content 
Talk to a Frontenac commercial roofing team that answers the phone, walks your roof, and writes scope you can actually budget. We work directly with owners and facility managers, not a call center. Reach out for a no-pressure site walk.
Property managers along the Clayton Road corridor know what a failing flat roof costs: tenant complaints, ceiling stains, after-hours leak calls, and emergency dispatches during every spring hailstorm. Top Quality Exteriors handles commercial roofing Frontenac MO facility teams genuinely trust, from full TPO and EPDM membrane replacements on mid-county office buildings to scheduled maintenance programs on retail and mixed-use properties near Plaza Frontenac. We work directly with owners, asset managers, and on-site facility staff start to finish.
Our commercial crews handle every low-slope system in regular use across western St. Louis County, including single-ply TPO, EPDM rubber, modified bitumen, and traditional built-up roofing (BUR). We coordinate scope, scheduling, and tenant access to keep your building operational during the tear-off and install, and we fully document parapets, scuppers, drains, and flashing terminations before any work begins. Pair the membrane install with a documented roof inspection and you get a defensible service record.
Frontenac’s commercial inventory is small but specific: a handful of upscale retail and office buildings along Lindbergh Blvd and Clayton Road, plus mixed-use properties on the Plaza Frontenac edge. Most of those buildings carry low-slope or flat membrane assemblies that have to survive three to five significant hail events per year, hot humid summers that bake adhesives, and winter freeze-thaw cycles that work at every seam and termination. We install TPO single-ply for owners who want a reflective white surface and competitive cost per square foot, EPDM rubber for buildings with heavy mechanical traffic, modified bitumen for parapets, transitions, and tie-ins that demand a torch-down or self-adhered SBS cap, and built-up roofing (BUR) where existing systems and budgets call for it. Every project starts with a moisture and substrate review, includes proper insulation R-value to current code, and finishes with documented flashing at curbs, drains, and scuppers. See our storm damage roofing page for emergency response details.
Every commercial project moves through the same five checkpoints, whether you manage a single building near Plaza Frontenac or a small portfolio along the Clayton Road corridor. Here’s exactly what to expect from kickoff to final closeout documents.
We meet you on the roof, walk parapets, scuppers, and drains, then photograph existing conditions. Membrane type and substrate moisture get logged on site. You see scope first.
You get a line-itemed proposal: TPO, EPDM, or modified bitumen options on the table. Tear-off versus recover, R-value, and warranties appear in plain English. No buried fees, ever.
We pull the Frontenac permit and stage materials off your active tenant zones. Crews coordinate with facility staff on access, parking, and hot work hours. You stay in the loop.
Our crew runs tear-off, deck checks, insulation, membrane install, and flashing details. Parapets, scuppers, drains, and curbs each get attention. Daily progress photos go to you.
We hand off as-built drawings, manufacturer warranty paperwork, and a workmanship warranty letter. A final walk-through confirms drainage and terminations. Records stay organized.
Top Quality Exteriors is a BBB Accredited Business with an A+ rating, founded in 2022 and backed by over 7 years of industry experience. Our team is licensed in Missouri and Illinois, carries general liability and workers’ compensation insurance, and runs every commercial project under direct owner oversight on site. Owner Mario A. Granados reviews scope and closeout on each job. That means one accountable contact from estimate through warranty.
We back every commercial install with a 36-month workmanship warranty, with extended workmanship up to lifetime available on selected products and manufacturer warranties layered on top of that. Our 52+ team members include dedicated commercial crews who know flat-roof detailing, parapet flashing, and drain work — not occasional moonlighters. We also offer roof repair in Frontenac for portfolios that need scheduled maintenance instead of a full tear-off this fiscal year.
Commercial roofing in Frontenac MO and surrounding mid-county runs from roughly $5 to $12 per square foot installed on standard TPO and EPDM single-ply systems, with modified bitumen and BUR landing higher depending on layers, insulation, and tear-off complexity. A 20,000 square foot office or retail roof typically lands in the $100K to $250K range for full replacement. Recover jobs, where the existing membrane is sound enough to keep in place, come in lower.
Variables that move pricing here: insulation R-value and tapered systems for drainage, the number of penetrations and curbs, parapet height and wall flashing length, scupper and drain replacements, and any deck deterioration uncovered during tear-off. We also offer Hearth and GreenSky financing for qualifying commercial property owners. Pair the project with roof replacement in Frontenac services for any shingled outbuildings on the same property.
Every credential we carry is a commitment to quality, safety, and your peace of mind — on every project, in every state we serve.
