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If your Des Peres flat roof is ponding, leaking, or overdue for a real membrane replacement, give us a shout. We will climb it, document the deck, and walk you through the TPO options that fit your building. No pressure, no guesswork.
A leaking flat roof over your Manchester Road storefront or a soft, ponding low-slope section on a Manhattan Heights split-level needs a real membrane specialist, not a shingle crew guessing at seam welds. Top Quality Exteriors installs and repairs TPO roofing on commercial buildings and low-slope residential additions across Des Peres, matching membrane thickness, fastening pattern, and drainage detail to the building instead of running a one-size scope. We handle the whole tear-off, insulation build-up, membrane install, and final flashing package end to end.
From West County Center-adjacent retail pads and the Edward Jones campus corridor along Manchester Road to older ranch homes with tacked-on flat additions off Des Peres Road, we spec 60 mil or 80 mil TPO with heat-welded seams, upgraded parapet flashing, tapered ISO insulation, and cleaner drain detail than the original build ever had. Pair the roof scope with a coordinated commercial roofing in Des Peres plan and you get one accountable crew on the whole building envelope from deck to drain.
Flat and low-slope roofs fail differently than pitched shingle roofs, and shingle contractors miss the difference every day. Water sits on the deck instead of running off, seams open under thermal cycling from our humid summers into January freezes, drains clog with debris off the mature tree canopy that shades most of Des Peres, and hail bruises the membrane where you cannot see it from the ground. Our TPO installs start with a written deck condition report, tapered ISO insulation to build positive slope toward the drains, and a mechanically fastened or fully adhered white reflective membrane sized to the building load. Heat-welded seams give you a monolithic surface that shrugs off the wind-driven rain and hail bands that hammer western St. Louis County every spring and early summer. If the storm side of the equation is more urgent than a planned replacement, we can move straight into storm damage roofing in Des Peres with tarping, adjuster coordination, and a documented scope of loss written for your carrier.
Every Des Peres TPO and flat roof project we run moves through the same five checkpoints, so you always know the sequence before we ever set a fastener on your deck. Here is what to expect from the first call to the final walk on your building.
We climb your flat roof and run a full audit at no charge. I map ponding areas, seam separations, and drain condition. You get photos and a written report before we quote a scope.
Next we spec the membrane thickness, insulation, and fastening pattern. I match it to your building height, drainage, and warranty needs. No off-the-shelf template scopes here.
We pull the Des Peres building permit and stage materials on site. The crew tears off old membrane, checks decking, and preps parapets. Nothing gets covered until it looks right.
The TPO membrane goes down with heat-welded seams and hot-air probe tests. Flashing, drains, and pipe boots get rebuilt clean. Every seam gets checked twice before we call it done.
We walk the finished roof with you before we roll off site. You get warranty paperwork, drain photos, and a maintenance sheet. My cell stays on for questions after the crew leaves.
Des Peres is a real commercial and low-slope market, not just a shingle town. Manchester Road runs 255-plus businesses through the city, the West County Center anchor block sits at the western end, and the Edward Jones headquarters campus rides the Interstate 270 interchange. That density means TPO, EPDM, modified bitumen, and PVC roofs on retail pads, medical offices, and mixed-use buildings, on top of the low-slope additions on older Manhattan Heights split-levels.
We come in as membrane specialists first. Top Quality Exteriors was founded in 2022, but our owner and crew leads carry over 7 years of industry experience welding TPO seams and rebuilding parapet flashing on Missouri buildings. That is why the property managers along the Manchester corridor and homeowners with tacked-on flat additions in Harwood Hills call us in for a real diagnosis instead of a shingle contractor guessing at low-slope drainage details.
A typical TPO project in the St. Louis market runs $7,000 to $15,000 installed, though the real number depends on membrane thickness, insulation build, and how much tear-off the deck needs. A 2,000 square foot flat roof on a Des Peres commercial pad, spec’d with 60 mil white TPO, tapered ISO insulation, and a mechanically fastened attachment, generally lands in the middle of that range. Larger buildings and 80 mil fully adhered systems push it up.
What you should not pay for is guesswork on a Des Peres flat roof scope. We walk your building, measure square footage, count drains, check parapet heights, and hand you a written scope with membrane brand, mil thickness, insulation R-value, fastening pattern, and 36-month workmanship warranty term spelled out. If pitched sections need work too, we bundle in roof replacement in Des Peres so one crew handles the full building envelope on one schedule.
Every credential we carry is a commitment to quality, safety, and your peace of mind — on every project, in every state we serve.
