Plan a TPO roof around the deck, insulation, drainage and roof openings, with the occupied building below kept in the work plan.
TPO is a single-ply membrane whose field seams are joined with heat. It forms the weather surface of a larger roof assembly. The deck, insulation, attachment and perimeter details determine how that surface is supported and secured.
A white membrane does not identify the whole system or establish that it is suitable for a particular building. An adhered assembly, a mechanically fastened assembly and an induction-welded assembly connect to the base differently. The correct choice needs the deck, building conditions and project requirements in view.
A free commercial roof inspection starts with the present roof and your concern. For an existing leak, the useful answer may be a defined repair. For a replacement, the proposal needs to explain the assembly beneath the new membrane as well as the finished surface.
The membrane has to continue around curbs, pipes, drains and perimeter edges without leaving a route below the surface. Field seams need a compatible, properly prepared welding area. Corners and changes in direction need their own details rather than a bead of general-purpose sealant.
Rooftop equipment complicates the work. A curb or service line may restrict access to a seam, while later equipment work can puncture or strain roofing nearby. The scope should identify how each connection will be reached, flashed and protected after installation.
At roof edges, secure termination matters as much as the seam in the middle. A roof that looks intact across its open field can still admit water where its perimeter or curb connection has failed.
A puncture or failed detail can be repaired when the surrounding membrane accepts a reliable compatible connection and the underlying layers remain suitable. Older membrane may need preparation and a trial of the proposed repair method. Age alone neither rules out a patch nor proves that one will hold.
Wet insulation, widespread deterioration or inadequate attachment can make scattered patches poor value. The repair boundary has to reach sound, dry material. Where that condition cannot be reached locally, replacement of a larger area or the roof assembly deserves consideration.
Explore commercial roof replacementIdentify the membrane and supporting layers, known leaks and access conditions. Further moisture or substrate investigation may be needed before choosing a repair, recover or tear-off; the surface does not reveal every concealed condition.
The new assembly must account for how water reaches outlets and how the roof resists movement. Deck condition, insulation layout and any required slope changes influence the specification. A new membrane cannot correct a low spot beneath it by itself.
Coordinate access to units, service lines and curbs. Deliveries, staging, noise and work above sensitive rooms belong in the plan, with arrangements for keeping opened areas protected as conditions change.
Prepare the base, secure the insulation and membrane as specified, and complete seams, flashings and edges. Finished details should be checked before equipment traffic resumes. The closeout should identify care needs and actual coverage.
Membrane thickness is only one part of a TPO proposal. Insulation, cover board, attachment, edge metal and the number of penetrations can materially change the work and its cost. A thicker sheet does not resolve wet layers or improve a poorly executed joint.
Manufacturer and workmanship coverage depend on the actual system, installer eligibility and written terms. After installation, clear drainage paths and controlled roof traffic help protect the assembly; equipment changes should be coordinated with its roofing details.
Deck repairs, dry insulation and required thermal or drainage changes.
Seam preparation, curbs, perimeter termination and compatible accessories.
The coverage issuer, exclusions, maintenance and access arrangements.
Often, if the surrounding membrane can accept a reliable compatible patch and the affected layers can be restored. The roof’s surface condition and the extent of concealed moisture matter more than a simple age cutoff.
No. Coverage depends on the complete qualifying assembly, installation requirements, issuer and written terms. Thickness is a material choice, not a promise that every leak or outside cause is covered.
A recover requires suitable dry existing layers, secure attachment, adequate support and compliance with the applicable assembly and local requirements. Wet or deteriorated layers cannot be made sound by covering them. An inspection helps determine whether removal is necessary.
Tell us about the building, known leaks and how the roof is accessed. A free inspection can help define a TPO repair or replacement scope.