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Ready to stop chasing leaks on your flat roof? Call our Maryland Heights team for a free on-site inspection and a written quote you can compare. We answer the phone, show up when we say we will, and back every seam with a 36-month warranty.
If your flat or low-slope roof is pooling water, splitting at the seams, or staining the ceiling below, you’re dealing with the most common failure points we see across Maryland Heights commercial buildings and the 1960s ranch and split-level homes scattered through the Dorsett and McKelvey corridors. Top Quality Exteriors installs and repairs TPO roofing in Maryland Heights, MO, giving property owners a durable, heat-welded white membrane built to shrug off humid summers, freeze-thaw winters, and the hail that rolls through every spring.
Unlike asphalt or EPDM that relies on adhesives at every joint, TPO uses heat-welded seams that fuse the membrane into one continuous waterproof surface, which is why we recommend it for low-slope residential additions, garages, and the larger flat decks on Riverport-area commercial buildings. Our crews handle full tear-offs, recovery installs, parapet flashing, and tie-ins to existing pitched sections, and we coordinate with our commercial roofing in Maryland Heights team whenever a building needs flat and steep-slope work in one mobilization.
Flat roofs in Maryland Heights live a hard life. Summer rooftop temperatures climb past 150 degrees on dark membranes, winter freeze-thaw cycles pry at every penetration, and the storm lines that march northeast out of West County drop hail straight onto unprotected low-slope surfaces. Older built-up roofs and ballasted EPDM systems on 1970s and 1980s buildings near the McKelvey corridor are typically first to go, with seam separation, blistering, and clogged roof drains showing up before any interior leak does. We pull cores when we need to verify substrate condition and confirm that the existing deck can carry a mechanically fastened or fully adhered TPO assembly. Pair a new 60 mil membrane with proper perimeter fastening, walkway pads at HVAC access, and updated drain bowls, and you get a roof that holds up to St. Louis metro weather without surprise call-backs. Need emergency service first? Start with roof repair in Maryland Heights and we will get a tarp or patch on today.
Every flat-roof project we run in Maryland Heights follows the same five steps, whether it is a 1,200 square foot residential addition or a multi-bay commercial deck off Riverport. Here is what to expect from first phone call to final walkthrough.
We walk your roof and pull core samples on questionable areas. Drains, seams, and parapet flashings get measured and photographed. You get a full written scope before any quote.
We size the membrane, insulation, and fastening pattern to your deck and code. The quote breaks out labor, material, and tear-off line by line. No vague allowance buckets here.
Crews strip the old membrane to deck and stage debris in a covered dumpster. Wet insulation is replaced and soft decking is swapped before we cover back up. Watertight overnight.
We roll 60 mil membrane, mechanically fasten or fully adhere it, and heat-weld every seam at 1,100 degrees. Walkway pads go in at HVAC access. Parapet flashings detailed last.
We probe every seam and run a hose test on the field membrane. You get a full binder with the warranty, photos, and a drain-cleaning schedule. We do not leave until you sign off.
Top Quality Exteriors was founded in 2022, but our owner and lead crews bring over 7 years of industry experience to every Maryland Heights project. We are licensed in Missouri and Illinois, BBB Accredited with an A+ rating, and carry general liability and workers compensation coverage on every job site. Flat roofing is not a side gig for us, and we will not subcontract your TPO install to a crew who only learned heat welding last spring.
That matters here because Maryland Heights sits in one of the country’s most active hail corridors, with three to five significant hail events most years and a stretch of severe storms in 2024 and 2025 that hit West County hard. Our crews have repaired and replaced TPO across the Dorsett Road corridor and the Riverport commercial pocket, and we back every job with a firm 36-month workmanship warranty plus extended manufacturer coverage on qualifying systems.
Residential TPO replacement in the St. Louis metro typically runs $7,000 to $15,000, depending on square footage, insulation depth, deck condition, and how many penetrations need new flashing. Commercial pricing scales with building footprint and is quoted by the square, so a 12,000 sq. ft. warehouse near Riverport lands in a different bracket than a 600 sq. ft. garage off Dorsett. We give you a fixed written number after inspection, not a verbal range over the phone.
What you are really buying is seam strength and longevity. A 60 mil heat-welded TPO membrane installed correctly runs 15 to 20 years before it needs replacement, while a cut-rate EPDM patch job often shows seam failure inside 7 years. Hearth and GreenSky financing are available for qualified homeowners who want to spread the investment, and our team will pull the city permit and schedule the required mid-job decking inspection so the project stays on the books.
Every credential we carry is a commitment to quality, safety, and your peace of mind — on every project, in every state we serve.
