TPO (Thermoplastic Polyolefin) waterproofing membrane is a hot-air weldable single-ply sheet for roofing systems. Available configurations include homogeneous, fabric-backed and reinforced sheets. Confirm the product-specific thickness, reinforcement, backing and test documentation for the proposed roof assembly. Reflective performance and welding settings must be verified for the supplied product.
Standard Roll Size
Customizable width and length
For project-specific pricing, send your technical requirements and destination port.
Select the configuration that matches your substrate, exposure condition and project specification.
| Configuration | Reinforcement | Thickness | Surface | Recommended use |
|---|---|---|---|---|
| TPO H | Homogeneous (H) | 1.2mm / 1.5mm / 2.0mm | White / Grey / Custom | General waterproofing, fabrication, adhered and bonded assemblies |
| TPO L | Fabric-Backed (L) | 1.2mm / 1.5mm / 2.0mm | White / Grey / Custom | Fully adhered systems on insulation or prepared substrates |
| TPO P | Polyester Reinforced (P) | 1.2mm / 1.5mm / 2.0mm | White / Grey / Custom | Mechanically fastened exposed roofs and wind-prone decks |
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TPO (Thermoplastic Polyolefin) waterproofing membrane is a single-ply roofing sheet with hot-air welded seams. Select the configuration for the proposed roof assembly and confirm its technical documentation. White surface options require measured reflectance and thermal emittance data; SRI, where specified, is a separate calculated index. Welding settings must be established through trial welds under actual installation conditions.
For projects where a flame-free, self-adhered installation is preferred over mechanical fastening, see our Self-Adhesive Bitumen Membrane. Where a rubber-sheet system with taped or bonded seams is required, compare our EPDM Waterproofing Membrane — and for a polymer sheet with strong chemical resistance, review our PVC Waterproofing Membrane.
Selecting the right TPO type is the most important specification decision:
|
Type H — Homogeneous Best for general waterproofing and fabrication. |
Type L — Fabric-Backed Designed for direct bonding to substrates. |
Type P — Reinforced Polyester reinforced for mechanically fastened roofs. |
A single-ply option for offices, retail and institutional roofs. Verify the proposed assembly and any required cool-roof test results against the project requirements; membrane color alone does not establish compliance or energy savings.
Large-span industrial decks are mechanically fastened with P-type TPO (≥ 250 N/cm max tension), delivering wind-uplift resistance and fast installation without open flames — a key advantage over torch-applied systems on occupied or fire-sensitive plants.
The -40°C low-temperature flexibility and plasticizer-free matrix suit cold rooms, freezer plants, and logistics hubs, where PVC-type sheets can stiffen or lose plasticizer over time at sustained low temperatures.
Lightweight TPO re-cover systems can be laid over existing membranes after surface preparation, avoiding tear-off costs and roof downtime. Hot-air welded seams keep the retrofit fully watertight without bitumen kettles or torches.
Hot-air welding fuses the sheet into one continuous surface. GB 27789 joint peeling strength is ≥ 4.0 N/mm — the seam performs as part of the membrane, not as a weak line.
Mechanically fastened, fully adhered, and ballasted assemblies are all supported. The same H/L/P product family covers exposed roofs, bonded systems, and protected membranes.
With no migrating plasticizers, the sheet does not shrink, harden, or become brittle as it ages. Dimensional stability under heat aging (≤ 1.0% change) keeps fasteners and seams under control.
The halogen-free polyolefin formulation is compatible with polyolefin recycling streams, supporting EPD documentation and LEED / BREEAM material credit objectives where product documentation is available.
TPO, Type P (Reinforced), 1.5mm, White Surface (Representative Configuration)
| Test Item | Unit | Test Method | Requirement | Result / Notes |
|---|---|---|---|---|
| Tensile Strength (H type) | MPa | GB 27789 | ≥ 12.0 | 14.0+ |
| Elongation at Break (H) | % | GB 27789 | ≥ 500 | 600%+ |
| Max Tension (L type) | N/cm | GB 27789 | ≥ 200 | ≥ 200 |
| Max Tension (P type) | N/cm | GB 27789 | ≥ 250 | ≥ 250 |
| Tear Strength (P type) | N | GB 27789 | ≥ 450 | ≥ 450 |
| Watertightness | MPa | GB 27789 | 0.3 MPa, 2h | No Leakage |
| Low Temp Bending | °C | GB 27789 | -40°C No crack | Typical value; confirm with the product TDS |
| Joint Peeling Strength | N/mm | GB 27789 | ≥ 4.0 | ≥ 4.5 |
| Solar Reflectance (White) | Dimensionless fraction | Confirm the test method in the product report | As specified by the project | Request product-specific measured results |
| Dimensional Change (Heat Aging) | % | GB 27789 | ≤ 1.0 | Typical value; confirm with the product TDS |
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Values shown apply to the stated product configuration. Other types (H / L / P), thicknesses (1.2mm / 1.5mm / 2.0mm), colors, and reinforcement options may have different performance values. GB 27789-2011 is the current edition; confirm the applicable product TDS and batch test report before specification or procurement.
Cross-reference for engineering specifications & global procurement
| Property | China (GB) | USA (ASTM) | Europe (EN) |
|---|---|---|---|
| Tensile Strength | ≥ 12.0 MPa (H) | ASTM D6878 | EN 13956 |
| Low Temp Flexibility | -40°C | Reference value; confirm with the product TDS | EN 495-5 |
| Joint Peeling Strength | ≥ 4.0 N/mm | ASTM D6878 | EN 12316-2 |
| Compliance Status | GB 27789-2011 | Equivalent | Equivalent |
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* Technical Note: The values shown are reference information for the selected product configuration. Confirm the applicable standard, test method, certification scope, and product-specific documentation with our technical team before specification.
Ensure the substrate is smooth, dry, clean, and structurally sound. Remove sharp projections and standing water.
Mark reference lines according to the roof layout plan. Pre-pave the TPO membrane and allow it to relax.
Secure the membrane at the overlap area using approved fastening components (screws and plates).
Using calibrated hot-air welding equipment, weld all overlapping seams. A continuous bead of molten material should be visible at the edge.
TPO rolls are wound on rigid cores, wrapped in protective film, and secured on fumigated pallets with corner protectors and strapping. The film shields the polyolefin surface from UV and abrasion during ocean transit.
Roll width, length, and color are configurable at production. Custom core labels and branded packaging are supported for distributor and contractor programs.
Store rolls upright in original packaging, indoors, away from direct sunlight, heat sources, and sharp objects. Extended outdoor exposure of unpacked rolls can affect surface appearance and weldability; keep storage under cover.
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