TPO / PVC membranes
SAR 80–110/m² as a planning market reference for larger projects
When it fits
Often suitable for large roof areas where heat-welded seams can be inspected and tested.
What to inspect
Ask for membrane thickness, fastening method, seam procedure and compatibility with the layers below.
Before comparing quotes
Installer seam quality and penetration details matter more than a small difference in unit price.