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  • General liability · Carrier named on the certificate · Policy 000000
Bethune Roof Systems
(419) 555-0100
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TPO roofs

TPO roofs for buildings that need a dry, plain roof

A white or light single-ply membrane, welded at the seams with hot air, fastened or adhered over insulation. It suits most low-slope commercial roofs.

  • Welded seams

    Seams are fused with hot air and probed, not taped.

  • A reflective surface

    Light colors reflect sun and keep the roof surface cooler.

  • Insulation under it

    Board thickness is set by the building, not by the membrane.

  • Details done by hand

    Drains, curbs, edges and penetrations are flashed one at a time.

Request a bidHow a bid works
A white flat roof membrane with a rooftop penthouse and vents on a clear day

When to look at a new roof

Signs a TPO roof is near the end of its life

  • Seams opening

    Laps lifting or separating along the welds, where water gets under the sheet.

  • The same leak, again

    Repairs at the same spot more than once usually mean the layer under the membrane is wet.

  • Standing water

    Puddles that last more than a couple of days after rain add weight and wear the membrane.

  • Shrinkage at the edges

    Membrane pulled tight at curbs and parapets, or flashing coming away.

How the job runs

A TPO roof, phase by phase

  1. 01

    Step 1: Survey and core samples

    We measure the roof, cut cores to see what is under the membrane and scan for wet insulation.

  2. 02

    Step 2: Submittals and material

    Membrane, insulation and fasteners are chosen with you and ordered with the lead time written in the bid.

  3. 03

    Step 3: Tear-off or prep, in sections

    Only as much roof is open as can be closed the same day.

  4. 04

    Step 4: Insulation, membrane and welds

    Board down, sheet rolled out, seams welded and probed, flashings detailed.

  5. 05

    Step 5: Close-out

    A walk with you, photos of the finished roof and the warranty paperwork.

TPO questions

Is TPO or PVC better for my building?

It depends on what vents onto the roof and how the building is used. TPO suits most roofs; PVC is the choice under grease and chemical exhaust. We say which and why in the bid.

Does the membrane color matter?

Light colors reflect more sun. Your bid shows the colors the manufacturer offers for the system.

Who warrants the roof?

The membrane maker warrants the material, and we put our own workmanship terms in writing. Terms, limits and exclusions are in the written warranty.

Ask for a TPO bid

We visit the roof, take samples and write the bid.

Request a bidSample survey report