Tremco underlayment’s are used as a secondary water barrier under metal & asphalt shingles. They consist of highly versatile bitumen compounds with enhanced adhesion helping them stick to most surfaces like plywood, OSB, concrete, wood particle and gypsum cover boards. Tremco Underlayment’s provide temporary protection from the elements and an excellent walkable surface for contractors.

Our complete TremLock Metal Roofs and Walls catalog is available here and our variety of colors is here. Interested in our edge metal coping and fascia colors? Click here.

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