Single-Ply Roofing
Large-area cold-applied roofing on commercial and industrial buildings, including retrofit over existing decks where open flame is not permitted.
Factory Direct Supply
EPDM Waterproofing Membrane
TY-SHIELD™ EPDM (Ethylene-Propylene Diene Monomer) rubber waterproofing membrane with a saturated polymer backbone that resists UV and ozone attack. Vulcanized grades deliver ≥ 7.5 MPa tensile strength, ≥ 450% elongation, and -40°C low-temperature flexibility. Seams are bonded cold with contact adhesive or splicing tape — no open flame, no hot-air welder. Available in JL1 vulcanized and non-vulcanized types across 1.2mm, 1.5mm, and 2.0mm thicknesses. Confirm the applicable product TDS before specification.
Cold-Bonded Seams-40°C Flexibility≥450% ElongationOzone & UV Resistant
Reinforcement Options
Non-reinforced standard; polyester scrim on request
Typical Applications
Roofing, bridge decks, ponds & reservoirs
Standard Roll Size
20m × 1.5m (at 1.5mm)
For project-specific pricing, send your technical requirements and destination port.
Direct Supply OEM Labeling Technical Support
Product Overview
The Gold Standard in Synthetic Polymer Waterproofing
EPDM (Ethylene-Propylene Diene Monomer) is a cured rubber membrane used where flexible sheet performance and weathering resistance are the deciding factors: exposed roofing, bridge decks, water infrastructure, and buried applications. Where modified bitumen and PVC membranes lose flexibility as plasticizers migrate or oxidation advances, EPDM’s saturated backbone stays chemically inert — there is simply no double bond left for UV, ozone, or oxygen to attack. That is why EPDM field service records in roofing routinely pass three decades while the sheet remains elastic enough to stretch past 450%.
Vulcanized vs Non-Vulcanized — Selecting the Right EPDM Type
|
JL1 Vulcanized Cured — cross-linked polymer chains Superior mechanical properties for exposed and heavy-duty applications. |
JL1 Non-Vulcanized Uncured — easier bonding, excellent aging Optimized for adhesive compatibility and ease of installation. |
Why Cold-Bonded Seams Matter
Every membrane system is only as strong as its seam — and seam construction is where EPDM fundamentally differs from TPO membrane and modified bitumen sheets. EPDM lap joints are bonded with contact adhesive or self-adhering splicing tape over a 75–100mm overlap, cured in place, and fully watertight without a single flame or hot-air gun on the roof. For a retrofit over an occupied building, a hospital, or a warehouse holding flammable stock, that removes the entire risk class of torch- or welder-related fires. It also removes the operator skill dependency: a clean, rolled adhesive lap is far more forgiving than a heat-welded seam that depends on nozzle temperature, travel speed, and wind conditions.
EPDM in Water Infrastructure
The same chemistry that resists UV aging makes EPDM a preferred specification for water contact: no plasticizer to migrate, no phthalate to leach, no vulcanization by-product to release. Potable water reservoirs, fish ponds, aquaculture raceways, and decorative water features rely on this inertness, and EPDM liners flex with settlement and seasonal water levels where rigid liners crack. For tunnels and underground structures subject to hydrostatic pressure, see our tunnel waterproofing membrane selection guide — and if the project calls for a welded thermoplastic sheet instead of a bonded rubber one, compare PVC waterproofing membrane before specifying.
Engineered for the Most Demanding Environments
EPDM’s performance advantages are not marketing claims — they are the direct result of its molecular architecture. The saturated polymer backbone means there are no vulnerable double bonds for UV, ozone, or oxygen to attack. This is the same chemistry that makes EPDM the material of choice for automotive weather seals, radiator hoses, and window gaskets — components that sit in direct sun and ozone-rich air for the life of a vehicle.
Available Configurations
Select the reinforcement, thickness and surface finish to match your project requirements. Contact us with your specification for a tailored quotation.
| Configuration | Reinforcement | Thickness | Surface | Recommended Use |
|---|---|---|---|---|
| TY-EPDM-VL-1.2 | None (standard) | 1.2mm | Standard Black | General waterproofing, pond liners, light-duty roofing |
| TY-EPDM-VL-1.5 | None (standard) | 1.5mm | Standard Black | Single-ply roofing, bridge decks, water features |
| TY-EPDM-VL-2.0 | None (standard) | 2.0mm | Standard Black | Heavy-duty roofing, reservoirs, high-traffic assemblies |
| TY-EPDM-NV-1.5 | None | 1.5mm | Black | Easy-bond applications, repairs, complex detailing |
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All thicknesses and surface finishes shown are available in standard production. Custom roll dimensions, packaging and private-label printing are available subject to minimum order quantity. Final configuration should be selected according to climate, substrate, waterproofing system design, exposure condition and local project specifications.
Applications
Bridge Decks & Infrastructure
Absorbs deck movement and thermal expansion on bridges, viaducts, and parking structures where rigid membranes crack.
Ponds, Reservoirs & Aquaculture
Chemically inert sheet with no plasticizer migration — safe for potable water storage, fish ponds, and aquaculture raceways.
Tunnels & Underground Structures
Flexible liner for tunnels and underground structures subject to settlement and hydrostatic pressure. See our tunnel membrane selection guide.
Inverted & Green Roofs
Serves as the waterproofing layer beneath protection boards or green-roof build-ups, where resistance to biological and chemical exposure matters.
Key Benefits
Saturated Backbone, Nothing to Attack
EPDM's ethylene-propylene backbone is fully saturated — no double bonds for UV, ozone, or oxygen to attack. The degradation pathways open to asphalt-based and PVC membranes do not exist in this molecule, which is why the same chemistry seals automotive weatherstrips for decades.
Elastic Memory Absorbs Movement
Vulcanized EPDM stretches past 450% and returns to shape, absorbing thermal cycling, structural settlement, and substrate cracking without stress concentration. Rigid membranes transfer that movement to the seam line; EPDM absorbs it in the sheet itself.
Cold-Bonded Seams, No Open Flame
Lap joints are fused with contact adhesive or self-adhering splicing tape — no torch, no hot-air welder, no fume risk. EPDM becomes specifiable where open flame is restricted: storage facilities, hospitals, retrofit of occupied buildings, and insulation-sensitive assemblies.
Repairable in the Field, Forever
Damage is repaired with uncured EPDM patch or liquid EPDM that vulcanizes in place, restoring a monolithic membrane. Unlike coatings that need re-application or sheets that need seam re-welding, an EPDM roof can be patched in minutes at any age.
Technical Specifications
EPDM, JL1 Vulcanized, 1.5mm, Standard Black (Representative Configuration)
| Test Item | Unit | Test Method | Requirement | Result / Notes |
|---|---|---|---|---|
| Tensile Strength (Vulc.) | MPa | GB/T 18173.1 | ≥ 7.5 | 9.0+ |
| Elongation at Break | % | GB/T 18173.1 | ≥ 450 | 500-600% |
| Tear Strength | kN/m | GB/T 18173.1 | ≥ 25 | 30+ |
| Low Temp Bending | °C | GB/T 18173.1 | -40°C No crack | Typical value; confirm with the product TDS |
| Ozone Aging | 168h | GB/T 18173.1 | No cracking | No cracking |
| Watertightness | MPa | GB/T 18173.1 | 0.3 MPa, 30min | Impermeable |
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Values shown apply to the stated product configuration. Other types (vulcanized / non-vulcanized), thicknesses (1.2mm / 1.5mm / 2.0mm), and surface finishes may have different performance values. GB/T 18173.1-2012 is the current edition; confirm the applicable product TDS, batch test report, and project requirements before specification or procurement.
Global Standard Alignment
Cross-reference for engineering specifications & global procurement
Reference Information
| Property | China (GB) | USA (ASTM) | Europe (EN) |
|---|---|---|---|
| Product Standard | GB/T 18173.1-2012 (JL1) | ASTM D4637 | EN 13956 |
| Low-Temperature Flexibility | -40°C no crack | ASTM D2137 (confirm with TDS) | EN 495-5 (confirm with TDS) |
| Ozone Aging | 168h no cracking | ASTM D1149 (confirm with TDS) | EN 1844 (confirm with TDS) |
| Watertightness | 0.3 MPa / 30 min | Confirm with TDS | EN 1928 (confirm with TDS) |
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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.
Installation Guide
Substrate Preparation
Ensure the base course is flat, solid, smooth, and dry (moisture content < 9%). Corners at parapets should be radiused to 20mm.
Primer Treatment
Apply polyurethane primer evenly on the prepared substrate using a roller. Allow the primer to dry fully before proceeding.
Membrane Positioning
Unroll the EPDM membrane and allow it to relax for at least 30 minutes before bonding to prevent internal stress.
Adhesive Application
Apply adhesive on both the substrate and the membrane underside. Allow the adhesive to dry until tack-free (15–30 mins).
Packaging & OEM
Core-Wound Under Tension
Vulcanized EPDM has rubber memory — it wants to spring back. Rolls are wound on rigid cardboard cores under controlled tension and held with PE film so they arrive round, not oval, and unroll flat on site.
Palletized & Corner-Protected
A 1.5mm × 20m roll weighs roughly 54 kg. Rolls are stacked on export pallets, strapped, and corner-protected so the stack survives container handling without edge damage.
Non-Dangerous Goods
EPDM sheet carries no UN number and no hazard class — a cured rubber sheet, not a reactive or flammable product. No DG declaration and no special container requirements on sea freight.
OEM Labeling at the Mill
Brand, specification, and batch data printed directly on the wrapper or embossed on the sheet edge — your labeling, our production line.
Export Loading Reference
Roll Size (1.5mm)
1.5m × 20m (30 m² per roll)
Roll Weight (1.5mm)
≈ 54 kg
20GP Loading
≈ 4,500 m² (industry estimate)
40HQ Loading
≈ 11,000 m² (industry estimate)
Note
Confirm exact loading with the factory for your roll specification
Ordering Information
Export Supply Reference
Minimum Order
1,000 m² per specification (negotiable for repeat orders)
Lead Time
15–25 days after deposit confirmation, depending on thickness and volume
Packaging
Core-wound rolls, film-wrapped and palletized — see Packaging & OEM
OEM / Private Label
Custom width, color, roll length, and printed labeling available
Documentation
TDS, batch test reports, and GB / ASTM / EN certificates on request
Technical Downloads
EPDM Technical Data Sheet (TDS)
Ready for PDF Request
EPDM Installation Guide
Ready for PDF Request
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Frequently Asked Questions
What is the difference between vulcanized and non-vulcanized EPDM?
Vulcanized EPDM is cross-linked during production, delivering higher mechanical performance — tensile strength ≥ 7.5 MPa, elongation ≥ 450%, tear strength ≥ 25 kN/m — and better low-temperature flexibility. Non-vulcanized grades (tensile ≥ 4.0 MPa, elongation ≥ 400%) are easier to bond and shape around complex details, at slightly lower strength. Select the type based on the mechanical demand of the project; vulcanized is the standard for exposed roofing.
How does EPDM compare to TPO for roofing?
The two use different polymer systems and, critically, different seaming methods. EPDM is a cured rubber sheet bonded with cold-applied contact adhesive or splicing tape — no heat source needed — which suits buildings where open flame or hot-air welding is restricted. TPO is a thermoplastic sheet fused by hot-air welding within a +400°C to +620°C window for monolithic seams and is often chosen where weldability and recyclability are specified. Compare the product-specific TDS, detailing method, exposure, and project requirements before selection.
Is EPDM safe for fish ponds and potable water?
Yes. EPDM contains no plasticizers or toxic additives that could migrate into water — plasticizer-free formulations are widely used for potable water reservoirs, fish ponds, and aquaculture. If potable water compliance is required, request the relevant food-contact or water-safety test documentation for the specific formulation before specification.
How long does an EPDM membrane last?
Industry field experience for vulcanized EPDM in roofing is typically 30–50 years, with factory warranties commonly covering 10–20 years depending on thickness and system. Actual service life depends on formulation, sheet thickness, UV exposure, detailing quality, and maintenance. The saturated backbone chemistry gives EPDM one of the longest documented service records among single-ply membranes.
How are EPDM lap seams made, and how strong are they?
Lap seams are bonded with contact adhesive or self-adhering splicing tape over a lap width of 75–100mm. Adhesive is applied to both faces and allowed to dry until tack-free (15–30 minutes); after rolling, the seam reaches working strength within about 24 hours. In shear, a properly made lap joint typically outperforms the sheet itself because the overlap area doubles the load path — but joint quality depends on clean surfaces and correct adhesive selection for the substrate.
Can EPDM be installed in cold weather?
The membrane itself remains flexible to -40°C, so the sheet can be handled and laid in freezing conditions. However, solvent-based contact adhesives generally require ambient temperatures above 5°C to bond reliably — in cold weather use low-temperature adhesive grades or self-adhering tape, and warm the splice area if condensation is present. Plan detailing for wind chill, since the adhesive, not the membrane, sets the practical installation temperature window.
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