Evaluate the existing TPO roof
TPO is a thermoplastic single-ply roofing membrane used on many low-slope buildings. For an existing roof, the immediate question is whether its field membrane, seams and details can support a reliable repair. Identify the system and available warranty records before choosing materials or authorizing work.
Repair requires more than a matching color
A white patch is not evidence of a compatible repair. Surface condition, preparation, welding and manufacturer requirements matter. Ask us to explain how the existing membrane will be evaluated and how the completed detail will be checked.
Compare replacement assemblies
For a new TPO roof, compare membrane specification, insulation, cover board, attachment and perimeter details together. Roof access, traffic from equipment service and drainage also influence the scope. A lower number can reflect omitted assembly components rather than a better price for equivalent work.
Questions for the estimate
Request the manufacturer and system designation, included flashing work, treatment of wet materials, warranty responsibilities and maintenance requirements. If a recover is suggested, ask how the existing assembly’s suitability was established. Keep the final documentation for future service visits.
Questions before you book
Can TPO be installed over an existing roof?
Sometimes, when the existing assembly and applicable requirements allow a recover. Moisture, layers, attachment and deck condition must be evaluated first.