ECOmastic® Mastic

Heavily Fibrated Asphalt Mastic for General Roof Repairs

Sag-resistant ECOmastic mastic is used to repair and restore flashings and asphalt built-up roofing defects including blisters, cracks and punctures.  Strength can added by using reinforcing membranes.  ECOmastic is not intended for use as a wet patching material; do not use ECOmastic on coal tar membranes.


ECOmastic is an asbestos-free, asphalt-based, heavily fibrated mastic blended with penetrating oils and plasticizing agents.

Roofing & Weatherproofing Peace of Mind

We deliver peace of mind to building owners and facility managers by managing roofing and building life cycles for customers in all industries, including education, healthcare, government, manufacturing and more.

  • Tremco Roofing offers the industry's most comprehensive roofing and weatherproofing solutions for restoration, repair, maintenance, replacement and new construction.
  • WTI (Weatherproofing Technologies, Inc.) provides roofing services, construction management and general contracting.
  • Our Canam Building Envelope Specialists affiliate provides building envelope solutions to eliminate air leaks, improve energy efficiency and reduce costs.


Phone: 1.800.852.6013