TopSpec by WeatherBond EPDM

TopSpec by WeatherBond’s EPDM Fully Adhered Roofing System provides building owners with a long-lasting, dependable roof system and applicators with fast and easy installation.

The benefits of TopSpec by WeatherBond EPDM include:

  • Black-and-white accessories, including seam tape, pipe boots, flashings, corner covers and more.
  • Available with pre-applied seam tape, ensuring uniform adhesive width and thickness.
  • Proven performance for more than 40 years.

A Stronger Performance

TopSpec by WeatherBond Reinforced EPDM membranes get their strength from a strong polyester reinforcing scrim-sandwiched between two plies of EPDM membrane. The polyester reinforcement more than doubles puncture resistance compared to non-reinforced membranes. For rooftops where long-term puncture resistance is essential, the dual-ply construction of the reinforced membrane is the ideal solution as it resists cuts, tears and scuffs.

Fully Adhered Roofing System

TopSpec by WeatherBond Reinforced EPDM membrane may be used on TopSpec by WeatherBond fully adhered roofing system installations. An acceptable insulation is mechanically attached to the roof deck; or adhered with adhesive and the membrane is adhered to the insulation using EPDM Bonding Adhesive. Adjoining sheets of membrane are spliced using TopSpec by WeatherBond’s Pre-Applied Seam Tape or TopSpec by WeatherBond’s Peel & Stick Seam Tape and primer.

Mechanically Attached Roofing System

TopSpec by WeatherBond Reinforced EPDM membrane can be integrated into TopSpec by WeatherBond’s Mechanically Attached Roofing System. Insulation is mechanically attached to the roof deck and the membrane is mechanically attached with fastening plates, polymer or metal fastening bars and the appropriate fasteners. TopSpec by WeatherBond’s Reinforced Perimeter Strip effectively secures the roof perimeter.

Important Information

EPDM Documents
Specifications and Details
Installation Instructions
Material Estimator

With the WeatherBond RBR Material Estimator, you can easily develop a material list for your roofing project. Simply click the link below and enter your roof's characteristics to generate your list.


WeatherBond offers customers peace of mind with our industry-leading Limited Lifetime warranty.  Simply complete the WeatherBond warranty form, submit with a copy of the bill of sale or invoice, and rest assured that WeatherBond will have you covered.

Warranty forms are available wherever WeatherBond is sold. If you would like WeatherBond to mail you a warranty form, please fill out a literature request form and submit it to WeatherBond or send your name and address to