TPO Thermoplastic Polyolefin Waterproofing Membrane
Great Ocean Waterproof specializes in TPO Thermoplastic Polyolefin Waterproofing Membrane, manufactured at our factory in Shandong Province, China. As a dedicated manufacturer, we focus on producing reliable tpo membrane waterproofing materials that meet industry standards for durability and performance. Our tpo waterproof membrane features a single-ply construction with reinforced layers, offering resistance to UV exposure, chemicals, and punctures, making it suitable for commercial roofing, pond liners, and underground waterproofing projects. We emphasize practical price structures based on volume and specifications, ensuring accessibility for various construction needs without unnecessary complexity. This product is available in standard widths and thicknesses, with options for heat-weldable seams to facilitate efficient installation. For more details on applications or customization, contact us directly.
Product Introduction
TPO waterproofing membrane is a single-ply roofing and waterproofing sheet made from thermoplastic polyolefin, blending ethylene propylene (EP) rubber with polypropylene through advanced polymerization. Introduced in the U.S. market in the 1980s and refined in the early 1990s, it is designed for flat or low-slope roof applications where mechanical fastening provides secure installation without added plasticizers or chlorine.
The material offers stable performance across temperature ranges, resists aging, maintains physical properties, and supports straightforward welding for seam integrity. Compared to traditional options, tpo waterproof membrane provides low thermal flexibility, durability against environmental stress, and compatibility with various substrates. On the upper surface, a light-colored reflective layer reduces heat absorption, aiding energy efficiency without environmental or construction safety concerns.
Great Ocean Waterproof produces this rollable tpo waterproof membrane manufacturers using enhanced fiber-reinforced formulations and precise extrusion processes to ensure consistent thickness, weld strength, and long-term water resistance for commercial and industrial projects.
| Thickness(mm) | 1.2 / 1.5 / 1.8 / 2.0 | Length(m) | 25 | Width(m) | 1.0 / 2.0 |
Key Features
- Hot-air welded seams – Lap joints are fused using hot air, delivering high peel strength and a continuous, sealed tpo waterproofing membrane layer.
- Extended aging resistance – Formulated without plasticizers for long-term weather and UV stability.
- Cold-weather flexibility – Retains pliability down to -40 °C, suitable for installation and performance in harsh winter climates.
- Chemical & biological resistance – Withstands exposure to acids, alkalis, salts, and microbial growth.
- Puncture resistance – Dense polymer matrix and robust seam strength provide reliable physical barrier properties.
- Energy-efficient surface – Light-colored finish reflects the majority of solar radiation, lowering roof surface temperature and cooling loads.
- Color options – Available in multiple shades beyond standard light colors to integrate with building aesthetics.
Great Ocean Waterproof produces tpo membrane waterproofing rolls in standard 1.2 mm, 1.5 mm, and 2.0 mm thicknesses for flat-roof systems.
Three Types of Great Ocean TPO Waterproofing Membrane
| Type | Code | Structure | Primary Application |
|---|---|---|---|
| Fabric-Backed | TPO L | TPO sheet laminated to non-woven polyester fleece on the underside | Fully adhered systems over concrete, wood, or irregular decks; excellent bond strength with PU foam or low-VOC adhesives. |
| Homogeneous | TPO H | Single-layer unreinforced TPO sheet | Ballasted roofs, mechanically fastened light-duty systems, or protected membrane assemblies (inverted roofs). |
| Polyester-Reinforced | TPO P | TPO top/bottom layers with embedded polyester scrim mesh | Mechanically fastened high-wind zones; maximum tear and fastener pull-through resistance. |
Using standard GB27789-2011
| No. | butang | Indicator | |||
|---|---|---|---|---|---|
| H | L | P | |||
| 1 | Thickness of resin layer on the middle tire base/mm ≥ | - | - | 0.4 | |
| 2 | Tensile performance | Maximum tensile force/(N/cm) ≥ | - | 200 | 250 |
| tensile strength/MPa ≥ | 12.0 | - | - | ||
| Elongation at maximum tension/% ≥ | - | - | 15 | ||
| elongation at break/% ≥ | 500 | 250 | - | ||
| 3 | Heat treatment size change rate/% ≤ | 2.0 | 1.0 | 0.5 | |
| 4 | Low temperature bending property | -40°C No cracks | |||
| 5 | Impermeability | 0.3MPa, 2h, waterproof | |||
| 6 | impact resistance | 0.5kg·m, waterproof | |||
| 7 | Resistance to static loadsa | - | - | 20kg, waterproof | |
| 8 | Joint peel strength/(N/mm) ≥ | 4.0 | - | 3.0 | |
| 9 | Right angle tear strength/(N/mm) ≥ | 60 | - | - | |
| 10 | trapezoid tear strength/(N) ≥ | - | 250 | 450 | |
| 11 | Water absorption rate/(70°C 168h)/% ≤ | 4.0 | 4.0 | 4.0 | |
| 12 | thermal ageing(115°C) | Time/h | 672 | ||
| appearance | No bubbles, cracks, delamination, bonding, or holes | ||||
| Maximum tensile retention rate/% ≥ | - | 90 | 90 | ||
| Tensile strength retention rate/% ≥ | 90 | - | - | ||
| Elongation retention rate at maximum tension/% ≥ | - | - | 90 | ||
| Retention rate of elongation at break/% ≥ | 90 | 90 | - | ||
| Low temperature bending property | -40°C, No cracks | ||||
| 13 | chemical resistance | appearance | No bubbles, cracks, delamination, bonding, or holes | ||
| Maximum tensile retention rate/% ≥ | - | 90 | 90 | ||
| Tensile strength retention rate/% ≥ | 90 | - | - | ||
| Elongation retention rate at maximum tension/% ≥ | - | - | 90 | ||
| Retention rate of elongation at break/% ≥ | 90 | 90 | - | ||
| Low temperature bending property | -40°C No cracks | ||||
| 14 | Artificial climate accelerates aging | Time/h | 1500a | ||
| appearance | No bubbles, cracks, delamination, bonding, or holes | ||||
| Maximum tensile retention rate/% ≥ | - | 90 | 90 | ||
| Tensile strength retention rate/% ≥ | 90 | - | - | ||
| Elongation retention rate at maximum tension/% ≥ | - | - | 90 | ||
| Retention rate of elongation at break/% ≥ | 90 | 90 | - | ||
| Low temperature bending property | -40°C No cracks | ||||
Applications
- Flat and low-slope roofs – Primary use on industrial warehouses, commercial retail centers, office buildings, hospitals, schools, and other public facilities requiring durable single-ply tpo waterproofing membrane systems.
- Mechanically fastened systems – Enhanced (reinforced) rolls install with screws and plates in the seam overlap, ideal for steel decks or lightweight concrete where wind uplift resistance is critical.
- Fully adhered systems – Fleece-backed rolls bond directly to the substrate using low-VOC contact adhesives or polyurethane foam, suited for irregular decks, wood, or retrofit over existing membranes.
- Ballasted systems – Standard homogeneous rolls support river-washed stone or pavers as ballast, commonly specified for large-area tpo waterproof membrane roofs with minimal penetrations.
- Green roof and blue roof assemblies – Compatible root-barrier layers allow TPO to serve as the base waterproofing under extensive or intensive vegetation systems.
Great Ocean supplies all three roll types (homogeneous, reinforced, fleece-backed) in 1.2–2.0 mm thicknesses to match project design and local code requirements.
TPO vs. EPDM Waterproofing Membranes
| Aspect | TPO Waterproofing Membrane | EPDM Waterproof Membrane |
|---|---|---|
| Material Base | Thermoplastic polyolefin – blend of polypropylene and ethylene-propylene rubber with polyester scrim reinforcement. | Ethylene propylene diene monomer – thermoset synthetic rubber, typically reinforced with polyester or fiberglass. |
| Seam Method | Hot-air welded seams create a monolithic, thermoplastic bond that fuses the sheets. | Adhesive tapes or liquid adhesives; seams remain mechanical joints, not molecular. |
| Color & Heat Reflectance | Standard white surface reflects 75–85% of solar radiation (Cool Roof rated); reduces urban heat island effect. | Black standard; white-coated versions exist but add a field-applied layer that can wear. |
| Installation Temp | Can be installed in colder weather (down to 20°F/-7°C) because welding equipment generates its own heat. | Requires ambient temps above 40°F/4°C for most adhesives; cold-weather tapes available but slower. |
| Flexibility at Low Temp | Stiffens below 0°F/-18°C; may require extra care in extreme cold climates. | Remains flexible to -50°F/-45°C; ideal for freeze-thaw regions. |
| Chemical Resistance | Good resistance to oils, grease, and most rooftop chemicals; compatible with restaurant exhaust. | Excellent resistance to acids, polar solvents, and animal fats; widely used on food-processing plants. |
| UV & Ozone Aging | 5,000–8,000 hours accelerated UV testing; long-term color stability in white versions. | 10,000+ hours; black surface absorbs UV but does not degrade mechanically. |
| Roll Size & Weight | 10 ft × 100 ft (1,000 sq ft) common; 45–60 mil thick weighs ~0.3 lb/sq ft. | 10–50 ft widths, up to 200 ft lengths; 45–60 mil weighs ~0.3 lb/sq ft. |
| Repair | Patch with same TPO and hot-air weld; seamless integration. | Patch with uncured EPDM and primer/tape; seam remains visible and mechanical. |
| Recyclability | Thermoplastic – can be reground and reused in lower-grade products. | Thermoset – not recyclable; sent to landfill at end of life. |
| Typical Warranty | 20–30 years (material + labor) from tpo waterproofing membrane manufacturers when installed per spec. | 20–30 years material; labor coverage varies. |
| Cost (Material Only) | $0.70–$1.10 per sq ft (45–60 mil white). | $0.60–$0.90 per sq ft (45–60 mil black). |
Quick Takeaway
- Choose TPO for energy-efficient, white roofs in warm or temperate climates where hot-air welding speed and recyclability matter.
- Choose EPDM for dark roofs, extreme cold flexibility, or projects with heavy chemical exposure where proven 40+ year track records outweigh seam strength.
Great Ocean Waterproof supplies both systems and matches membrane type to project conditions.
Mga Review sa Kustomer
John M. – Roofing Contractor, Chicago, USA “Installed 28,000 sq ft on a warehouse retrofit last winter. The hot-air welder worked flawlessly at 15 °F (-9 °C) and seams tested 100 % watertight with vacuum box. White surface dropped roof temp by 22 °F compared to the old black EPDM. Client saw 18 % lower AC bills this summer.”
Maria S. – Facility Manager, São Paulo, Brazil “We chose the 1.5 mm gray TPO for a shopping mall expansion. The color matched the existing façade and the roll weight (0.29 lb/sq ft) let the crew cover 1,200 m² per day with a four-man team. No leaks after two rainy seasons and the local health inspector passed the roof for food-court exhaust proximity.”
Ahmed R. – Project Engineer, Dubai, UAE “Specified 60-mil TPO for a 45,000 m² logistics center. The light reflectance kept surface below 70 °C on 48 °C days—critical for our solar-panel array above. Zero seam failures in 24 months despite wind gusts to 110 km/h. Great Ocean’s technical rep flew in for the first weld test; very professional.”
Lars K. – Building Owner, Oslo, Norway “Replaced 30-year-old felt on a school gym. The -40 °C flexibility rating gave us confidence for Nordic winters. Installed in November without heaters. Kids are back playing basketball and the roof still looks brand-new after two snow cycles. Warranty paperwork was straightforward.”
Sophie L. – Architect, Vancouver, Canada “Used the 1.2 mm TPO on a mixed-use mid-rise. The range of colors let us satisfy the city’s urban-design panel while keeping SRI above 78. Mechanically fastened system went down fast over concrete deck. No callbacks in 18 months and the owner loves the lower energy invoices.”
Rajesh P. – Distributor, Mumbai, India “Stocked 40 rolls of 2.0 mm for monsoon-prone coastal projects. Customers report zero water ingress even on terraces with heavy foot traffic. The puncture resistance holds up against construction debris better than the PVC we used to carry. Re-order cycle is now every 3 weeks.”
FAQ
Q: What is the difference between 45-mil, 60-mil, and 80-mil TPO? A: Thickness drives warranty length and puncture resistance. 45-mil is standard for low-traffic roofs with 20-year warranties. 60-mil is the most common for commercial projects with 25–30-year coverage. 80-mil is specified for high-traffic, high-wind, or heavy-ballast systems.
Q: Can TPO be installed directly over an old built-up roof? A: Yes, in a recover application. Remove loose gravel, repair blisters, and install a cover board or separation layer. Fully adhered fleece-back TPO is preferred for uneven substrates.
Q: Does the white surface yellow over time? A: No. Our TPO contains UV stabilizers and no plasticizers. SRI remains above 78 after 3 years of xenon-arc aging per ASTM G155.
Q: What is the coldest temperature for welding seams? A: Hot-air welders operate down to 20 °F (-7 °C). Below that, preheat the overlap with a heat gun to 50 °F (10 °C) for 30 seconds before welding.
Q: Is TPO compatible with rooftop grease exhaust? A: Yes. The polymer resists animal fats and oils. Install a grease-guard walkway pad around kitchen vents for foot traffic.
Q: How do I clean the membrane if it gets dirty? A: Low-pressure water (under 1,000 psi) and mild detergent. Avoid petroleum solvents, citrus cleaners, or abrasive pads.
Q: What wind-uplift ratings can Great Ocean TPO achieve? A: FM 1-90 to 1-180 depending on fastener pattern, deck type, and perimeter enhancement. Submit deck drawings for a custom layout.
Q: Is the membrane root-resistant for green roofs? A: Standard TPO is not root-resistant. Pair it with a dedicated root-barrier layer (HDPE or copper-foil) under the drainage board.
Q: What is the lead time for non-white colors? A: White and light gray ship in 5–7 days. Tan, custom gray, or specialty colors require 3–4 weeks minimum order of 20 rolls.
Q: Does Great Ocean provide a labor + material warranty? A: Yes, up to 30 years when installed by a certified contractor and inspected. Material-only warranties are also available.
Mahitungod sa Great Ocean Waterproof Technology Co., Ltd.
Great Ocean Waterproof Technology Co., Ltd. (formerly Weifang Great Ocean New Waterproof Materials Co., Ltd.) is headquartered in Tai Tou Town, Shouguang City—China’s leading hub for waterproofing materials. Founded in 1999, our 26,000 m² integrated manufacturing campus houses advanced production lines for TPO waterproofing membrane systems and a full portfolio of complementary waterproofing solutions.
Core Product Lines
- TPO Waterproofing Membrane – Extruded 1.2–2.0 mm homogeneous, reinforced, and fleece-backed rolls with hot-air weldable seams and high UV stability.
- PVC Waterproof Membrane – Internally reinforced sheets for tunnels, basements, and potable water containment.
- Polyethylene-Polypropylene (PE/PP) Polymer Composite Membrane – Fiber-backed rolls for below-grade and green-roof applications.
- CPE Waterproof Membrane – High-speed-rail certified chlorinated polyethylene sheets for infrastructure.
- SBS/APP Modified Bitumen Membranes – Torch-applied or self-adhesive cap sheets with root-resistant grades.
- Self-Adhesive HDPE Pre-Applied Membranes – Reaction-bonding rolls for blind-side waterproofing.
- Cross-Laminated HDPE Reaction-Stick Film – High-strength, post-applied vertical/horizontal barrier.
- Waterproof Coatings – Single- and two-component polyurethane, JS polymer-cement, spray-applied rubber asphalt, non-curing creep compound, and 951 water-based polyurethane systems.
- Specialty Tapes & Accessories – Butyl rubber, asphalt, and high-elastic liquid-applied flashings.
Manufacturing & Quality Control
- 20+ automated lines with in-line thickness scanners, polymer compounding, and lamination units.
- Full laboratory with ASTM/GB test equipment: tensile, peel, hydrostatic, low-temp flexibility, and accelerated weathering.
- ISO 9001 certified; products carry China Industrial Product License and national authority quality approvals.
Market Reach
Domestic sales cover 20+ provinces; export volumes serve North America, Middle East, Southeast Asia, and Europe. On-site technical support includes weld training, mock-ups, and system design for TPO waterproof membrane and hybrid installations.
Great Ocean operates under a “win-win” philosophy—delivering reliable, code-compliant materials at competitive prices with responsive service.
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