Cool Cover™ TPO Cover Tape Safety Yellow

1 of 6 products in this brand
Cool Cover™ TPO Cover Tape Safety Yellow consists of a 30 mil TPO membrane that has been laminated to a 25 mil pressure-sensitive white tape. The tape is comprised of vulcanized rubber adhesive that will provide OEM-quality performance for TPO single-ply restoration projects.

Product Type: Tape

Application Area: Roofs

Compatible Substrates & Surfaces: Metal, Thermoplastic Polyester Elastomer (TPO-E)

Features: Excellent Substrate Adhesion, Heat Resistance, High Durability, Moisture Resistant, Resistance to UV lights

Technical Data Sheet
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Identification & Functionality

Product Type
Product Image

Features & Benefits

Product Highlights
Features Benefits
Resistant to UV light, high heat and moisture

Long-term durability

Excellent adhesion to TPO and metal

Useful for metal edge tie-ins with untreated edging

Adheres to aged TPO

Useful when membrane can no longer be heat welded

Fast Installation

Saves time and labor

Waterproof detail

Suitable for roofing and waterproofing applications

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Recommended Applications
  • Cool Cover™ TPO Cover Tape-Safety Yellow is designed to cover, protect, and seal mechanical fastening bars, membrane fasteners, core sample repair patches, membrane repairs, and seam overlays in all TPO roofing systems.
  • The Cover Tape is highly useful for metal edge tie-ins where heat-weldable cover strips require pretreated metal. The product is also used to repair cracked seams and other surface defects on aged TPO field membranes, to which heat welding is difficult.
  • The product is designed to provide a clearly visible indicator of the roof edge, elevation changes and designated walk or no-walk areas. It may also find use in highlighting skylights or other potential rooftop hazards.
Application Methods


  1. Clean entire surface where Cool Cover™ TPO Cover Tape will be applied.
  2. Apply Millennium Single-Ply Primer or Millennium Primer 240 to entire surface to be covered using the supplied scrub pad.
    NOTE: Use caution when installlling at temperatures below 40°F (5°C) to prevent blushing of Single-Ply 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. Once the primer is dry immediately install Cool Cover™ TPO Cover Tape.
  5. Position Cover Tape over primed area and remove release liner at 45° angle while pressing down cover strip by hand.
  6. Roll the Cover Tape with a 2” (5.08cm) wide silicone roller.
  7. Seal edges of cover detail with patented Cool Cover™ TPO Edge Sealant.

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 cover with an approved TPO membrane cleaner.

  • Not for use on PVC membranes.
  • Do not use for detail flashing applications.
  • Talc, dust, oil, ice, snow, or wet conditions inhibit good adhesion. Clean and dry surfaces are necessary for proper Installation of this product.


  • Millennium Single-Ply Primer and Millennium Primer 240 Low VOC Single-Ply Primer are designed to dry with little or no tack. When dry, the primed area will feel completely “clean” to the touch. These primers are different than traditional EPDM primers that are designed to remain “tacky” to the touch in the dry state. Do not use pigmented EPDM primers on TPO Single Ply membranes.
  • Cool Cover™ TPO Cover Tape is also slightly less tacky than traditional EPDM Flashing and Cover Tapes. After priming the TPO membrane, installing Cool Cover™ TPO Cover Tape, and rolling in the cover tape, allow 24 hours for the cover tape to wet-in and build strength before testing the detail’s adhesion. The properly installed Cool Cover™ TPO Cover Tape will achieve maximum strength 7 days after installation. However, the initial strength of the properly installed cover flashing will maintain the intended waterproofing integrity immediately after installation, and for years to come.


Typical Properties
ValueUnitsTest Method / Conditions
TPO Cover Thickness30.0mil minMicrometer
Composite Thickness55.0mil minMicrometer
Ozone ResistanceNo Cracking-ASTM D 4419
Peel Strength (at 21°C)10.0psiASTM D 413
Shear Strength50 - 60psiASTM D 816
Brittleness Temperature-51 - 21°CASTM D 7426
Service Temperature Range-40 - 200°FASTM D 3359
Application Temperature40 - 120°FASTM D 603

Packaging & Availability

Regional Availability
  • Australia & New Zealand (ANZ)
  • Latin America
  • North America
  • South East Asia
Packaging and Coverage

Cool Cover™ TPO Cover Tape - Safety Yellow is available in the following sizes:

North America

Width Length Part # Rolls/Case
Safety Yellow
5.5 inch (140mm) 100 ft. (30m) ET-8910-5.5 2

Europe, CIS, and Middle East

Width Length Part # Rolls/Case
Safety Yellow
140mm (5.5 inch) 30m (100 ft.) ET-8910-5.5EU 2

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.