A Heavily Fibrated Asphalt Mastic for General Roof Repair

ELS is used to adhere new flashings and repair asphalt built-up roofing defects including blisters, cracks, and punctures.  It is also used to adhere new asphalt ply and modified bitumen membrane flashings.


The asbestos-free ELS consists of an 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

Email: inforoofing@tremcoinc.com