# Commercial TPO Roofing

> Single-ply TPO roofing in greater St. Louis, installed fully adhered, RhinoBond, or mechanically attached. Every seam heat-welded into one surface.

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

![Aerial of a finished white membrane roof sweeping across a curved commercial building](/wp-content/uploads/donovan/photos/tpo/ja-curved-membrane-aerial.webp)

[Back to Commercial](/commercial)

Commercial · TPO

# Welded,
not glued.

Single-ply TPO installed fully adhered, RhinoBond, or mechanically attached, with every seam heat-welded into one continuous surface. The seams are the roof, so we do not leave them to adhesive.

What it is

## A reflective single-ply membrane, heat-welded.

TPO is a single-ply thermoplastic membrane, usually white, that reflects heat instead of soaking it up. On a flat or low-slope commercial roof that reflectivity cuts cooling load through a St. Louis summer. The thing that makes or breaks a TPO roof is the seams, and we heat-weld every one of them so the membrane fuses into a single continuous surface rather than relying on tape or glue that ages out.

MaterialSingle-ply TPO membrane

SeamsHeat-welded, fused

AttachmentAdhered, RhinoBond, or mechanical

SurfaceReflective, energy-saving

Best forFlat and low-slope

InspectionFree, with roof report

![A crew heat-welding a TPO seam](/wp-content/uploads/donovan/photos/tpo/tpo-crew-seam.webp)

![Automatic seam welder running a TPO seam](/wp-content/uploads/donovan/photos/commercial/auto-seam-welder.webp)

![New white membrane across the wings of a historic brick apartment building](/wp-content/uploads/donovan/photos/tpo/clara-courtyard-membrane.webp)

On film

The brick apartments on Clara

The Junior Achievement building

Fully Adhered

### Glued flat to the deck.

The membrane is bonded across its full surface to the substrate. No fasteners through the field of the roof, a smooth finished look, and strong uplift resistance. The premium attachment when the deck and the budget allow it.

RhinoBond

### Welded to the plates, not punctured.

Plates are fastened to the deck first, then the membrane is induction-welded down to those plates. You get the holding power of a fastened system without driving fasteners through the membrane itself, so there are fewer points to ever leak.

Mechanically Attached

### Fastened at the seams.

Fasteners and plates run along the seam lines and the next sheet welds over them. The fastest and most cost-effective attachment, and the right call on plenty of commercial roofs.

### Re-roofing a flat or low-slope commercial building?

We inspect the roof for free and come back with a report that says which TPO attachment the building actually needs, fully adhered, RhinoBond, or mechanical, instead of defaulting to whichever is easiest to install.

[Request the visit](/contact)

What homeowners are saying

- > “Justin did a great job of communicating and was on the job site a lot.”

Gerald K. · Google
- > “Nick Mirth did an excellent job throughout the process our insurance claim!”

Tim C. · Google
- > “Great experience, very knowledgeable and customer friendly. I would highly Recommend.”

Kathy O. · Google

[See all reviews](/reviews)