Millennium Single-Ply Primer

1 of 41 products in this brand
Millennium Single-Ply Primer is a rubber-polymer-based roofing primer. Unlike thin primers that run and puddle, the high-viscosity formulation promotes uniform coverage on both horizontal and vertical surfaces. Millennium Single-Ply Primer does not react with atmospheric moisture, allowing it to be opened and resealed for use at a later date.

Product Type: Primer, Solventborne Adhesive

Application Area: Roofing Substrates

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

Features: Excellent Substrate Adhesion, Fast Drying, High Coverage, High Durability, High Viscosity, Solvent-Based

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Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Key Attributes
Features Benefits
High viscosity formula

Provides uniform coverage, no running or puddling

Fast drying

Speeds Installation

Excellent adhesion to a variety of substrates (EPDM, TPO, metals, wood, and concrete)

Suitable for a wide variety of application

Unique polymeric formulation

Long-term durability

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Application Instructions

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 with an approved EPDM or TPO membrane cleaner prior to application of Millennium Single-Ply Primer.

Equipment Clean-up: Use Mineral Spirits or VM&P naptha. Observe all manufacturer’s safety precautions and use recommendations when using solvents.

  1. Thoroughly shake or stir Millennium Single-Ply Primer prior to use and re-stir every 15-20 minutes during use. Note: product may exhibit an “apple sauce” type texture even after agitation. This appearance is normal and will not adversely affect the product’s performance. For more information on primer appearance, see Millennium Single-Ply Primer Appearance Technical Bulletin.
  2. Do not dilute or extend Millennium Single-Ply Primer.
  3. Surfaces should be dry and clean before applying Millennium Single-Ply Primer. EPDM and TPO surfaces should be cleaned with a suitable solvent such as mineral spirits or VM&P naptha if necessary prior to priming. Observe all manufacturers’ safety precautions and use recommendations when using solvents. Do not smoke while working with primer.
  4. When the surfaces are dry, apply Millennium Single-Ply Primer with a fully saturated brush or scouring pad. The surface should appear wet during application. Apply primer to a wider area then the actual bonding area to insure complete coverage. If using a scouring pad, be sure that it is free of excessive dust from EPDM membranes. Replace pads often. Do not overwork primer.
  5. Allow primer to dry completely (typically less than 20 minutes) before applying tape. Primer will visually appear “dull” or “flat” and will feel dry to the touch. Drying conditions will vary depending on ambient air conditions. NOTE: Use caution when installlling at temperatures below 40°F (5°C) to prevent blushing of EPDM primer (formation of condensation on surface of primer).
  6. When not in use, keep lid on primer to prevent solvent evaporation. When finished, secure lid and store primer as recommended for use at a later date.
  7. Once the seam or flashing is installed the primer will take up to 48 hours to wet-out the tape surface and build full strength. Any peel tests on installed seams or flashings should not be conducted until at least 24 hours after installation. For more information, please see H.B. Fuller’s Technical Bulletin on Cool Cover™ TPO Adhesion Strength.
Basic Use

Millennium Single-Ply Primer is used to prime EPDM and TPO roofing membrane to provide improved adhesion to the Millennium family of EPDM tapes, laminates, and sealants as well as H.B. Fuller’s Cool Cover™ line of TPO tapes, laminates, and sealants. Millennium Single-Ply Primer is an excellent choice for priming concrete, OSB, plywood, and metal surfaces.

  • Do not use as a membrane cleaner.
  • Talc, dust, oil, ice, snow, or wet conditions inhibit good adhesion.
  • Clean and dry surfaces are a necessity.
  • Not for use on PVC or TPO roof membranes.
  • Do not use on extruded or expanded polystirene insulation.
  • At Installation temperatures below 40°F (4°C) care must be taken to prevent the formation of condensation on surface of primer.
  • Not for use in VOC regulated markets, use Millennium Primer 240 in those areas.


Typical Physical Properties
ValueUnitsTest Method / Conditions
Solids Content15%-
Weight per Gallon6.5lbs-
VOC Content675.0grams per liter-
Application Temperature-18 - 43°C

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 Single-Ply Primer is available in the following package:

Container Size Part # Packaging
1 quart (0.9L) CN-5557-QT 6 quarts/case
1 gallon (3.8L) CN-0195 6 pails/case
3 gallon (11.4L) BK-5557-PA 30 pails/pallet

Storage & Handling

Shelf Life
12 Months
Storage Information

Store material in original unopened containers at temperatures between 40°F - 90°F (4°C - 32°C). Shelf life is 12 months when stored in unopened container.