Confirm that it is TPO.
Do not choose chemistry from a distant photo. Confirm the membrane type, approximate age, attachment method, previous repairs, and whether another coating is already present. Record the manufacturer if it is visible.
Overall photos, close-ups of seams and penetrations, membrane age, roof area, leak locations, and any known moisture history.
Find the failures before hiding them.
Walk seams, terminations, drains, curbs, penetrations, flashings, and transitions. Look for open laps, cuts, shrinkage, wet insulation, poor drainage, loose membrane, and surface contamination. A coating is not a substitute for removing trapped moisture or repairing an unsound assembly.
Clean, test, and repair.
Preparation is project-specific. The usual sequence is cleaning, allowing the roof to dry, completing repairs, and performing adhesion testing in representative areas. Weathered TPO may require a compatible primer before the base and reinforcement layers. Use current technical data and written project guidance for final requirements.
Think in layers, not one pail.
- Existing TPOSound, dry, repaired membrane.
- TPO primerPromotes adhesion where the written system requires it.
- Base coatEmbeds the reinforcement and creates continuity.
- Polyester reinforcementBuilds tensile strength through the field and details.
- Reflective finishCompletes the weathering surface at the specified film build.
Send one useful roof brief.
The technical team can respond faster when the request includes the roof type, size, condition, photos, project goal, warranty target, and material question. Start in the roof-system guide so the selected TPO system stays with the request.
Build a TPO roof brief →This article is general planning guidance, not a project specification. Final preparation, product selection, coverage rates, and warranty requirements must follow current Metacrylics technical documents and project-specific review.