EPDM waterproofing membrane

EPDM waterproofing membrane is a highly elastic synthetic polymer waterproofing sheet manufactured using internationally advanced cold-feed extrusion continuous vulcanization technology. It is produced with EPDM rubber from DuPont (USA) and high-quality domestic raw materials, combined with carbon black reinforcing agents, nano-modifiers, plasticizers, vulcanization accelerators, and other processing aids. The manufacturing process includes internal mixing, refining, filtering, extrusion, continuous vulcanization, and inspection. This product is weldable and is recognized worldwide as the “King of Waterproofing.”

Specification / Feature	Details
Material	Premium Ethylene Propylene Diene Monomer (EPDM Rubber)
Thickness	1.2mm/1.5mm/2.0mm(Customizable)
Width / Length	1.2m-4.0m/20m-50m per roll
Standard Compliance	Meets ASTM D4637 / EN 13956 / CE Certified
Elongation at Break	≥ 450% (Superb flexibility for deck & foundation)

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EPDM polymer bitumen membrane

Product Features

Excellent aging resistance – service life up to 50 years.
Very high elongation, high tensile strength, and low dimensional change after heat treatment.
Good root penetration resistance – suitable for green roof waterproofing.
Special modified molecular structure effectively solves the current shortcomings of EDM adhesive bonding both domestically and internationally.
Good low temperature flexibility – adapts well to ambient temperature changes.
Easy application – reliable and strong bonding, no environmental pollution.
Chemical resistant – suitable for special applications.
Easy repair – low cost.
Easy detailing.
Good puncture resistance.

Application Method

The EPDM waterproofing system consists of EPDM waterproofing membrane, system accessories, system design, and installation. This advanced and mature waterproofing system has been proven through nearly thirty large-scale projects both domestically and internationally – it is complete and reliable. It includes fully bonded, loosely laid, and mechanically fastened systems, along with complete application technologies such as system accessories, detail design, and installation procedures. Users can select the most suitable application
method based on the building design requirements.

Method 1: Fully bonded method:

Level substrate → Trowel smooth → Dry → Apply substrate adhesive → Unroll and position membrane → Clean lap area → Apply lap adhesive → Roll lap area → Detail treatment → Complete

The fully bonded method uses substrate adhesive to bond the EPDM membrane directly and completely to the substrate. Adjacent membrane overlaps shall not be less than 10 cm, and then EPDM adhesive is used for seam lapping, forming a continuous, closed waterproofing layer. After that, flashings are applied around the perimeter and at penetrations according to code requirements.

Application features:

Suitable for any type of roof.
Lightweight material.
High wind load resistance.

Method 2: Loosely laid method:

Loose-lay the EPDM waterproofing membrane on the substrate over large areas. The overlap between two membrane sheets shall not be less than 10 cm, then use adhesive to bond the lap joints. After that, apply flashings at the perimeter and penetrations according to code requirements.

Loosely laid method:

Unroll and position membrane → Clean lap area → Apply lap adhesive → Roll lap area → Detail treatment → Complete

Method 3: Inverted method:

A method where the insulation layer is placed above the waterproofing layer.

The loosely laid method and inverted method can be used in below-grade and roofing applications where the substrate can bear weight. Generally, the roof slope shall not exceed 1:6.

Application features:

Suitable for below-grade waterproofing, trafficable roofs, vehicular roofs, and green roofs.
Low installation cost.
Fast installation.

Method 4: Mechanically fastened method:

Unroll and position membrane → Mechanically fasten → Clean lap area → Apply lap adhesive → Roll lap area → Detail treatment →Complete

Mechanically fastened method： A method where the EPDM waterproofing membrane is fastened to the substrate using metal battens.

Application features:

Generally used on wood, concrete, metal, and other roof substrates.
Installation is not affected by weather conditions.
Fast installation.

FAQ

EPDM (Ethylene Propylene Diene Monomer) waterproofing membrane is a heavy-duty synthetic rubber roofing and sealing sheet. Unlike PVC or bituminous sheets, EPDM rubber waterproofing offers extraordinary resistance to UV rays, ozone, and thermal aging. It remains highly flexible even in extreme temperatures (from -40℃ to 120℃ ), providing an expected service life of over 30 to 50 years, making it the premier choice for world-class infrastructure.

A: Yes, absolutely. For global engineering projects and wholesale distributors, we do not just sell the rubber sheets. We provide a One-Stop EPDM Waterproofing System to eliminate material compatibility risks. Our package includes specialized bonding adhesives, seam tapes, uncured flashing strips, termination bars, and polyurethane sealants. You can import everything in one single container to save on local procurement costs.

A: EPDM sheet waterproofing is incredibly versatile and engineered for both above-ground and below-grade applications:

Water Containment: Widely used for pond liners, dams, and irrigation channels due to its non-toxic, eco-friendly nature.
Roofing & Decking: Ideal for commercial flat roofs and epdm deck waterproofing due to its superior elongation (≥450%).
Underground Foundations: Excellent for epdm foundation waterproofing, basements, and retaining walls because it resists root penetration and soil chemicals.

A: As a direct manufacturer, our epdm waterproofing membrane price is volume-based to ensure our distributors and contractors maximize their project margins. The final tier pricing depends on three factors:

Thickness: Standard options are 1.2 mm，1.5mm, and 2.0mm
Structure: Reinforced (with fiberglass/polyester mesh) or Non-reinforced (homogeneous).
Order Volume: We offer substantial discounts for bulk container orders (1× 20GP container minimum order quantity).
Contact our sales team with your project blueprints to get an instant FOB/CIF quote within 2 hours.

A: Yes. We support full OEM and private label customization for regional building material brands. We can customize the roll width (from 1.2m up to 4m to reduce on-site seams) and roll length (typically 20m or 50m). Additionally, we can print your company logo directly onto the silicone release film or custom-brand the heavy-duty export woven packaging.

A: Our EPDM membranes strictly comply with international industry benchmarks, including ASTM D4637 (Standard Specification for EPDM Sheet Used in Single-Ply Roof Membrane) and European EN 13956 standards, and are fully CE and ISO9001 certified. We provide Free A4-sized EPDM Sample Books along with full TDS (Technical Data Sheets) and MSDS reports for qualified engineering tenders and commercial buyers to verify quality before bulk purchasing.