Millennium EPDM Seam Tape

1 of 41 products in this brand
Millennium EPDM Seam Tape is a black, vulcanized rubber, pressure-sensitive adhesive tape designed to provide high strength and watertight seams for single ply EPDM roofing membranes. Millennium EPDM Seam Tape is soft and tacky, providing a quick grab onto EPDM field membranes, yet possesses high initial strength. Millennium EPDM Seam Tape exhibits excellent adhesion to most substrates, including glass, metals, wood, concrete, masonry, and some plastics. This tape will provide OEM-quality performance for EPDM single-ply restoration projects.

Product Type: Tape

Application Area: Pond Linings, Roofing Membranes, Roofing Substrates, Roofs

Compatible Substrates & Surfaces: Concrete, Glass, Masonry, Metal, Plastics, Wood

Features: Cost Effective, Excellent Substrate Adhesion, Good Green Strength, High Performance, High Strength, Tacky

Technical Data Sheet
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Identification & Functionality

Backing Material Type
Product Type
Product Families
Product Image

Base Polymer
  • Base - EPDM
  • Test Method - FTIR

Features & Benefits

Labeling Claims
Ready-to-Use Product Features
Key Attributes
Features Benefits
UL and FM approved

Proven performance

OEM grade

Industry standard quality

No VOC’s

Environmentally safe

Quick and easy Installation

Saves time and labor

Excellent tack

Immediate green strength

No torch or liquid adhesives required Improved safety
Water-tight seams

Suitable for roofing or pond lining applications

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Basic Use

Millennium EPDM Seam Tape is designed for field splicing of EPDM membranes.

Surface Preparation

All work surfaces should be clean, dry, and free of dirt, dust, debris, oils, un-adhered coatings, deteriorated membrane and other contaminants that may result in a surface that is not sound or is uneven. If necessary, clean the surface to receive the flashing with an approved EPDM membrane cleaner.

  • Not for use on PVC roof membranes.
  • Not for use in high traffic areas.
  • Talc, dust, oil, ice, snow, or wet conditions inhibit good adhesion. Clean and dry surfaces are necessary for proper Installation of this product.
Application Method

1. The entire surface where Millennium EPDM Seam Tape will be applied must be cleaned and primed.

2. Mark the membrane where the edge of the splice occurs and then fold the top portion back. Apply EPDM primer to both sides of membrane using the supplied scrub pad. Scrub the membrane thoroughly while the primer is wet moving up and down the seam area. NOTE: Use caution when installlling at temperatures below 40°F (4°C) to prevent blushing of EPDM primer (formation of condensation on surface of primer).

3. Allow the primer to dry to the touch (no material transfer, typically less than 20 minutes). Dry time will vary depending on ambient temperature and humidity.

4. Position the Millennium EPDM Seam Tape over the primed splice area along the marked edge. Press in by hand. Verify that approximately 1/8” (0.3cm) of tape extends beyond splice edge.

5. Roll the top surface of the release liner to promote adhesion to the bottom substrate.

6. Allow the EPDM membrane to fall freely onto the Seam Tape. Remove release liner at a 45º angle.

7. Immediately roll the splice with a 2” (5.08cm) wide silicone roller. Roll perpendicular to splice edge.

8. Seal edge of seam detail with patented Millennium EPDM Edge Sealant.*

Note: Millennium Single Ply Primer and Millennium Primer 240 are designed to dry with little or no tack. When dry, the primed seam area will feel completely “clean” to the touch. Other primers are designed to remain “tacky” to the touch in the dry state. With all primers, allow up to 24 hours after installation and rolling for taped seam to build maximum strength.

*US 6,642,296 B2; US 6,291,571 B1


Typical Physical Properties
ValueUnitsTest Method / Conditions
Tensile Strengthmin. 40psiASTM D 412
Elongationmin. 1000%ASTM D 412
Peel Strength (at 21°C, on EPDM)10.0pliASTM D 413
Shear Strength (at 21°C)20.0psiASTM D 816
Brittleness Temperature-46°CASTM D 746
Service Temperature-40 to 93°CASTM D 3359
Application Temperature4 - 49°CASTM D 603

The foregoing information is published as general information only. The listed properties and performance characteristics are typical values and are not to be interpreted as manufacturing specifications.

Packaging & Availability

Packaging Type
Regional Availability
  • Africa
  • Australia & New Zealand (ANZ)
  • Europe (Excluding Russia)
  • India
  • Latin America
  • Middle East
  • North America
  • South East Asia
Packaging and Coverage

Millennium EPDM Seam Tape is available in the following sizes:

North America

Width Length Part # Rolls/Case
3 inch (76mm) 100 ft. (30.48m) ET-0418 4
4 inch (102mm) 100 ft. (30.48m) ET-0419 4
6 Inch (152.4mm) 100 ft. (30.48m) ET-0420-06 2


Europe, CIS and Middle East

Width Length Part # Rolls/Case
3 inch (76mm) 100 ft. (30.48m) ET-0418-05EU 4


Storage & Handling

Shelf Life
24 Months
Storage Conditions

Store material in original unopened packaging at temperatures between 40°F-110°F (4°C - 43°C). Shelf life is 24 months when stored as recommended.