Millennium EPDM Edge Sealant

1 of 41 products in this brand
Millennium EPDM Edge Sealant* is a patented, specially formulated sealant designed to seal the exposed edges of EPDM membrane splices. Made from high solids and low VOC EPDM, this sealant exhibits excellent adhesion to EPDM membranes. Its unique formula ensures optimal performance in a range of applications, providing superior durability and adhesion.

Product Type: 1K (1 component) Sealant, Solvent free (100% Solids) Sealant, Solventborne Adhesive, Solventborne Sealant

Application Area: Roofing Substrates, Roofs

Compatible Substrates & Surfaces: Concrete, Ethylene Propylene Diene Monomer (EPDM), Metal, Wood

Chemical Family: Ethylene-Propylene-Diene Copolymers (EPDM)

Features: Excellent Moisture Resistance, Good Sagging Resistance, High Solids Content, Low VOC, Solvent-Based, UV Resistant, Very Good Heat Resistance

Technical Data Sheet
Message our experts with questions
Robert Blackstone avatar

Robert Blackstone

Global Leader - Inside Sales

Please reach out to me with any questions, I am happy to assist you in finding the right product or learning more about our storefront

Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Key Attributes
Features Benefits
Low VOC formula (<250 g/L) Suitable for use in VOC regulated markets
Aliphatic solvent system Will not attack polystirene
Excellent adhesion to a variety of substrates (EPDM, metals, wood, and concrete) Suitable for a wide variety of applications
Resistant to UV light, high heat, and moisture Long-term durability
High solids content Resistant to shrinking and cracking
No sag or flow Suitable for both vertical and
horizontal application


Applications & Uses

Application Area
Compatible Substrates & Surfaces
Basic Use

Millennium EPDM Edge Sealant is designed to seal the exposed edges of EPDM membrane roof system splices, T-joints, step downs, tie-ins, termination bars, and general flashing details.

Surface Preparation

All work surfaces should be clean, dry, 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 Edge Sealant with an approved EPDM membrane cleaner.

Application Method

1. Prior to application, ensure that all seams and/or flashings are properly installlled according to the EPDM roof system manufacturer’s guidelines.
2. Cut nozzle on tube for desired bead size. Place patented feathering tip over cut nozzle prior to installing cartridge into caulking gun.
3. Gun 1/4” (6.4mm) size bead of Millennium EPDM Edge Sealant along the exposed edge of membrane seam splice or flashing.
4. No tooling of installed sealant is necessary if feathering tip is used. If feathering tip is not used, tool the sealant. Tool the sealant bead so the high point is above the offset of the splice and the edges are feathered onto the deck.
5. Typically membrane and flashing seams must be allowed to age at least 2 hours before Millennium EPDM Edge Sealant is installed. Refer to EPDM roof system manufacturer guidelines for additional recommendations.


Typical Properties
ValueUnitsTest Method / Conditions
Weight11.6lbs/galASTM D 1475
Tack Free Timemax. 1HourASTM D 2377
Cure Rateapprox. 72HoursASTM D 2377
VOC Contentmax. 250g/LASTM D 2369
Solids Content80%ASTM C 681
Flash Point10.0°CASTM D 56
Service Temperature-40 to 93°CASTM D 3359
Application Temperature-6 to 49°CASTM C 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 Edge Sealant is available in the following package:

Cartridge Size Part # Cartridges/Case
10.3 fl. oz. (300 mL) CT-6343 12

Coverage rate will be approximately 20 - 22 lineal feet (6.0 - 6.7 m) for a 1/4” (0.64 cm) bead.

Storage & Handling

Shelf Life
24 Months
Storage Conditions

Store material in original unopened packaging at temperatures between 40°F-110°F. (4°C-38°C). Shelf life is 24 months when stored as recommended.