Commercial
The roof over
your operation.
From a slate steeple to a single-ply flat roof, we install the full range of commercial systems and sequence the work so the building keeps running. Every job starts with a free inspection and a roof report, not a quote.
Roof systems
Five systems, matched to the building.
Flat roofing systems behave nothing like a shingle roof. The right membrane depends on the slope, the drainage, and what runs across the roof. We tell you which one the building actually needs.
The 150-year roof.
One of the few crews left in St. Louis doing real slate. Virtually fireproof, long-lasting, and known to last 150 years, roughly six times longer than shingle.
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The lowest life-cycle cost.
Centuries of field performance, natural water-shedding and ventilation, and a 50 to 100 year lifespan. The lowest life-cycle cost of any roofing material.
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Certified and warrantied.
Commercial asphalt shingle from a CertainTeed certified crew. The same install discipline and reputable warranties, scaled to a commercial roof.
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Welded, not glued.
Single-ply TPO installed fully adhered, RhinoBond, or mechanically attached, with every seam heat-welded into one continuous surface.
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The full membrane menu.
BUR, modified bitumen, EPDM, spray polyurethane foam, and thermoplastic PVC or TPO. We match the membrane to the building, not the other way around.
See the detailsBy property type
We work around your tenants, your guests, and your lot.
Minimal disruption.
Commercial roofing for office buildings, sequenced so your tenants and your parking lot keep working while we do.
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One point of contact.
Multi-unit and apartment roofing with a single property manager on our side coordinating the whole job, start to finish.
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Guests never notice.
Hotel roofing scheduled and staged to keep noise, debris, and downtime away from your guests and your front entrance.
See the detailsPut the building on a maintenance plan.
Scheduled inspections, photo reports, and one point of contact. The cheapest commercial repair is the one you catch early.
From a St. Louis business owner
“Great job all the way around! We got a new commercial roof at our business and Donovan Roofing was fantastic! Communication was top notch as well as the service! Thank you guys!”
James C. · Google