Waterproof Heat-Welded System
Hot-air welding creates strong overlapping seams, helping the roof system resist water intrusion at laps, corners, penetrations and detail areas when installed correctly.

DERFLEX supplies project-ready TPO membrane rolls for commercial roofing, industrial waterproofing, warehouse roofs, public buildings and export distribution programs. The membrane is engineered for waterproof protection, UV resistance, heat-welded seams, reflective roof performance and stable roll-to-roll supply.
Instead of treating TPO as a generic plastic sheet, DERFLEX focuses on the practical details that matter to contractors and buyers: thickness selection, reinforcement direction, weldability, color consistency, packaging, export documentation and repeatable quality for bulk orders.
A TPO roofing membrane is a single-ply thermoplastic polyolefin membrane used to protect flat and low-slope roofs from water, sunlight and weather exposure. For commercial buyers, the real value is not only the sheet itself, but the complete roofing material package: stable thickness, reinforced strength, clean welding behavior, reflective surface, reliable supply and support for project documentation.
Hot-air welding creates strong overlapping seams, helping the roof system resist water intrusion at laps, corners, penetrations and detail areas when installed correctly.
The TPO formulation is designed for outdoor exposure, sunlight, ozone and temperature cycling, making it practical for exposed commercial and industrial roof decks.
White TPO membrane helps reflect solar heat, supporting cooler roof surfaces and energy-conscious building designs in warm climates and large roof areas.
Depending on the roof design, TPO roofing membrane can be used in mechanically attached, fully adhered or ballasted assemblies with compatible accessories.
DERFLEX supports bulk roll orders, private-label requirements, project packaging, roll labels and documentation for importers and roofing material distributors.
Thickness, width, length, surface color and reinforcement direction can be discussed according to roof area, climate, installation method and purchasing plan.
The original page images are retained and reorganized into a clearer product display area. Use these images to show roof appearance, retrofit results, installed membrane surfaces, cost-context roof examples and roll supply format.






The following specification table is designed for early-stage quotation and project comparison. Final values can be adjusted according to order quantity, roof design, local code requirements and target installation method.
| Item | DERFLEX TPO Membrane Direction | Buyer Notes |
|---|---|---|
| Material | Thermoplastic Polyolefin roofing membrane | Single-ply waterproof membrane for exposed roof applications |
| Common Thickness | 1.2mm, 1.5mm, 1.8mm, 2.0mm; custom direction on request | Thicker options are often selected for higher traffic, stronger durability or demanding climate conditions |
| Roll Width | 2m, 3m, 4m or customized production width | Wider rolls can reduce lap quantity and improve installation efficiency |
| Roll Length | 20m, 30m, 50m or project-specific roll length | Final packing depends on roll weight, shipping method and installation handling |
| Surface Colors | White, gray, tan; custom colors subject to MOQ | White is commonly selected for reflective roofing and heat reduction goals |
| Seaming Method | Hot-air welding | Requires correct welding temperature, pressure, overlap and site testing |
| Installation System | Mechanically attached, fully adhered or ballasted assembly direction | Confirm deck type, insulation, fasteners, adhesive and wind uplift requirement before ordering |
| Performance Focus | Waterproofing, UV resistance, heat aging resistance, flexibility, puncture resistance and dimensional stability | Project testing and certification can be discussed before bulk procurement |
| Packaging | Roll packing with protective film, label and pallet direction | Private-label and distributor packaging can be arranged for repeat orders |
| Export Support | Commercial invoice, packing list, test documents and shipping coordination | Suitable for importers, wholesalers, roofing contractors and project buyers |
Note: Specification values should be confirmed with DERFLEX according to final application, local standard, installation method and project environment.
TPO membrane is most often selected where a building owner or contractor needs a lightweight waterproof roof surface with strong seam welding, outdoor weather resistance and efficient installation over large roof areas.
Office buildings, shopping centers, supermarkets, retail parks and mixed-use buildings with wide low-slope roof areas.
Factories, workshops, storage warehouses, logistics centers and production facilities exposed to sun, rain and daily temperature movement.
Schools, hospitals, municipal buildings, terminals and community facilities where waterproofing reliability and maintenance planning matter.
Re-roofing and recovery projects where existing roof conditions allow a compatible TPO system design after professional inspection.
Reflective and lightweight membrane direction for roof areas that may later support solar mounting systems or energy-saving roof designs.
Roll goods supply for roofing material importers, regional dealers, contractors and private-label waterproof membrane businesses.
Confirm roof area, deck type, insulation board, fastening method, wind uplift demand, roof traffic level and detail complexity. For large-area roofs, roll width and welding efficiency can strongly affect labor planning.
Focus on stable specifications that your market can repeatedly sell: common thickness, roll width, white reflective surface, standard packaging, clear labels, test support and predictable lead time. DERFLEX can discuss repeatable SKU planning for wholesale supply.
Evaluate the total roof system, not only membrane price. Substrate preparation, insulation, vapor control, fasteners, welding quality, drainage, detailing and maintenance access all affect final roof performance.
Many buyers compare TPO with PVC, EPDM and other single-ply or coated membrane materials. The best choice depends on roof use, climate, chemicals, fire requirement, budget and installation team experience.
DERFLEX can help compare TPO roofing membrane thickness roll, PVC vinyl roofing membrane and broader waterproof membrane options for different projects.
Correct installation is essential for any single-ply roofing system. The membrane should be installed by trained roofing professionals using compatible tools, accessories and project-approved methods.
Ensure the roof deck is clean, dry, stable, smooth and properly sloped for drainage before membrane installation.
Position rolls to reduce unnecessary seams, avoid difficult detail conflicts and support efficient welding workflow.
Use hot-air welding with proper speed, pressure, temperature and overlap. Perform test welds before production welding.
Pay special attention to corners, drains, penetrations, parapets, edge metal, flashing zones and roof traffic areas.
DERFLEX is a professional manufacturer and exporter of coated fabrics, waterproof membranes and technical textile materials. For TPO membrane buyers, DERFLEX provides a practical combination of material manufacturing experience, customized roll supply and export service.
Communicate directly with the manufacturer for thickness, width, color, packaging, MOQ and delivery planning.
DERFLEX helps buyers match membrane specification to roof type, market demand and procurement budget.
Support for international buyers with roll packing, labeling, documentation and shipping coordination.
Beyond TPO, DERFLEX also supplies PVC membrane, coated fabrics, tarpaulin materials and other waterproof textiles.
Stable roll goods supply helps distributors and contractors maintain consistent SKUs for long-term business.
Discuss custom color, roll length, width, label, packing and project-specific material direction before bulk orders.
Explore more DERFLEX material pages related to roofing, waterproofing, membrane structures and industrial coated fabrics.
Send DERFLEX your roof area, target thickness, roll width, color, installation method, order quantity, destination port and documentation requirements. Our team will help recommend a practical TPO membrane roll direction for your market or project.
A TPO membrane is a thermoplastic polyolefin single-ply roofing membrane used for waterproofing flat and low-slope roofs. It is valued for heat-welded seams, UV resistance, reflective surface options and practical installation efficiency.
Yes. TPO membrane is widely used on commercial and industrial flat roofs because it is lightweight, waterproof, reflective and suitable for large roof areas when designed and installed correctly.
Common thickness options include 1.2mm, 1.5mm, 1.8mm and 2.0mm. The right thickness depends on roof traffic, climate, expected service life, installation system and project budget.
TPO membrane seams are normally sealed with hot-air welding. Correct welding temperature, overlap, pressure and site testing are important for long-term waterproofing performance.
DERFLEX can discuss custom thickness, width, length, color, packaging, labels and export documentation according to order quantity and project requirements.
Prepare the roof application, required thickness, roll width, color, quantity, destination and any test or documentation requirements, then submit them through the DERFLEX Request A Quote page.