THERMastic Hot Applied Built-Up Roofing System:

THERMastic Hot Applied Built-Up Roofing System

If you've been looking for a roof that is both exceptionally durable and watertight, your search could be over with Tremco Roofing's THERMastic hot applied built-up roofing systems.  They combine the advantages of pre-engineered components and time-tested, reliable installation techniques to provide a fully integrated system that offers long-term weatherproofing for your building.

THERMastic hot applied built-up roofing systems are anchored by high quality, hot-melt adhesive modified with a select S.E.B.S. polymer that is far superior to regular mopping asphalt in terms of elongation, low temperature flexibility and adhesion, and can be used to adhere multiple roofing plies as well as serving as the flood coat.  Gravel surfaces provide even greater weatherproofing and toughness.  The end result is a high-performance roofing solution where conditions such as severe climate, mechanical movement or thermal movement demand superior flexibility and resistance to fatigue.

Additional benefits of THERMastic hot applied built-up roofing systems include high strength polyester/glass plies that offer exceptional tear strength and toughness, making the system extremely puncture resistant; FM Global approvals that can help ensure better insurance rates; and controlled manufacturing processes that ensure uniform characteristics in each and every batch of our adhesive.

With their great long-term performance, excellent flexibility and puncture resistance, THERMastic Hot Built-Up Roofing systems provide the weatherproofing protection you want for your building. 

Click here to download our built-up roofing installation manualClick here to download our modified bitumen installation manual.

For downloadable detail drawings in PDF or dwg format, click here;  for our technical documentation, 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., a subsidiary of Tremco Incorporated), 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.


US: 1.800.852.6013

Canada: 1.800.668.9879