TPO (thermoplastic polyolefin) is a single-ply membrane roofing system used for waterproofing a range of residential and commercial roofs. It is installed over a prepared substrate and seams are heat welded to create a continuous waterproofing layer.
Why is TPO used?
TPO can be a practical choice where a durable, lightweight membrane system is required. The final performance depends heavily on correct substrate preparation, membrane layout, seam welding and detailing around penetrations and edges.
What should a homeowner or builder look for?
- Correct substrate preparation
- Properly welded seams
- Careful detailing around penetrations
- Correct edge and flashing details
- Quality materials and experienced installation
For Christchurch and Canterbury projects, the right membrane system should be selected based on the building, substrate, design and project requirements.
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