# Commercial Roofing

> Commercial roofing across greater St. Louis: slate, clay tile, shingle, TPO, and flat-roof systems for offices, apartments, and hotels.

Canonical: https://donovanrc.com/commercial/

![Large commercial marina reroof in progress with a crane and crew](/wp-content/uploads/donovan/photos/commercial-projects/marina-reroof-crane.webp)

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.

[Request a free inspection](/contact)[Or call · 636-685-0808](tel:6366850808)

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.

[![Large stone commercial building with a natural slate roof](/wp-content/uploads/donovan/photos/commercial-projects/commercial-slate-hero.webp)

01Slate

### 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.

See the details](/commercial/slate)[![Clay tile roof](/wp-content/uploads/donovan/photos/slate/clay-tile-1.webp)

02Clay Tile

### 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.

See the details](/commercial/clay-tile)[![Aerial of a commercial building with a charcoal architectural shingle roof](/wp-content/uploads/donovan/photos/commercial-projects/commercial-shingle-hero.webp)

03Shingle

### Certified and warrantied.

Commercial asphalt shingle from a CertainTeed certified crew. The same install discipline and reputable warranties, scaled to a commercial roof.

See the details](/commercial/shingle)[![Curved commercial building with a finished white membrane roof](/wp-content/uploads/donovan/photos/tpo/ja-building-entry.webp)

04TPO

### Welded, not glued.

Single-ply TPO installed fully adhered, RhinoBond, or mechanically attached, with every seam heat-welded into one continuous surface.

See the details](/commercial/tpo)[![White membrane roof over the corner of a historic brick apartment building](/wp-content/uploads/donovan/photos/tpo/clara-brick-membrane.webp)

05Flat Roof

### 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 details](/commercial/flat-roof)

By property type

### We work around your tenants, your guests, and your lot.

[![Multi-story office building with copper window detailing](/wp-content/uploads/donovan/photos/commercial-projects/addie-building-copper.webp)

06Office Building

### Minimal disruption.

Commercial roofing for office buildings, sequenced so your tenants and your parking lot keep working while we do.

See the details](/commercial/office-building)[![Three-story apartment building with balconies](/wp-content/uploads/donovan/photos/commercial-projects/commercial-apartment-hero.webp)

07Apartment

### One point of contact.

Multi-unit and apartment roofing with a single property manager on our side coordinating the whole job, start to finish.

See the details](/commercial/apartment)[![Multi-story hotel with a porte-cochere entrance](/wp-content/uploads/donovan/photos/commercial-projects/commercial-hotel-hero.webp)

08Hotel

### Guests never notice.

Hotel roofing scheduled and staged to keep noise, debris, and downtime away from your guests and your front entrance.

See the details](/commercial/hotel)

### Put 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.

[See maintenance plans](/maintenance-plans)

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