About Us

It was 1928 when William Treuhaft opened his small roofing materials manufacturing plant in Cleveland, Ohio. The company was called Tremco Incorporated. Today Tremco is an RPM International Inc. affiliate company employing over 2,000 people.

Tremco consists of operating divisions specializing in the manufacture and sale of roofing materials and services, construction sealants, glazing and gaskets, waterproofing systems, air barrier and fire stopping systems and a host of custom-designed products, programs and services dedicated to the worldwide construction and maintenance and repair industries. We are committed to helping our customers develop and maintain high performance buildings that operate with the lowest possible life-cycle costs.

Tremco consists of Tremco Commercial Sealants & Waterproofing, Tremco Roofing and Building Maintenance, Tremco Barrier Solutions, WTI, Canam and Chemtron. The facilities of each company are ISO 9001/9002 Registered.

Tremco Roofing & Building Maintenance

An international construction products and services company with roots reaching back to 1928, Tremco Roofing and Building Maintenance is deeply committed to helping our thousands of customers solve their most challenging facility problems.  More than 900 highly trained sales and service professionals from Tremco Roofing, WTI (Weatherproofing Technologies Inc.), WTC (Weatherproofing Technologies Canada) and Canam Building Envelope Specialists help “keep good roofs, and good buildings, good” for our customers through renovation, restoration and maintenance -- replacing roofs only when truly necessary -- as well as through new construction.

While we have helped install roofing systems and managed building envelope projects for thousands of facilities encompassing over one billion square feet, our support extends far beyond keeping buildings dry, safe and sustainable. Our goal is to help building owners and managers maximize the return on their facility investments through project planning: firm budgeting and cost reduction; a complete line of the highest quality products; investigative, maintenance, and information-based services: preventive maintenance; general contracting capabilities; and support for air, water and energy management. 

Tremco Commercial Sealants & Waterproofing

Tremco Commercial Sealants & Waterproofing specializes in the development of weatherproofing solutions for high-performance, sustainable buildings that meet performance requirements for air, water and fire resistance.  Full system offerings for the continuous, compatible building envelope include below-grade waterproofing; vegetated roof systems; air barriers; engineered transition assemblies; traffic coatings; silicone, urethane and hybrid sealants; and comprehensive glazing systems. Through its Technical Services group and experienced field representatives across North America, Tremco assists contractors, architects and consultants with specification development, selection of appropriate products for the application, sequence of installation and appropriate tie-ins, mock-ups, on-site testing protocols, custom detail drawings, installation and training.

Tremco Barrier Solutions

Tremco Barrier Solutions, formerly Koch Waterproofing Solutions, became a Tremco company in 2003. Tremco Barrier Solutions offers moisture, thermal, vapor and air barrier systems to builders of new homes throughout North America. As the leading provider of residential waterproofing for new construction, Tremco Barrier Solutions helps builders protect their homes and reputations with the #1 (TUFF-N-DRI® Basement Waterproofing System) and #2 (Watchdog Waterproofing®) brands of fluid-applied foundation waterproofing. Through a dedicated network of contractors throughout North America, Tremco Barrier Solutions offers the highest quality and best-performing products in the industry. Our customers consider our Technical Service, Sales and Marketing Support organizations as additional reasons why they choose to do business with us. Tremco Barrier Solutions products and systems don't stop at the top of the foundation wall. The Horizon Foundation Finishing System® protects the exposed above-grade portion of the foundation wall, providing insulation and moisture management performance, while giving the exterior wall aesthetic appeal. Moving up the exterior wall, the Enviro-Dri® Weather-Resistant Barrier System is offered as a more effective alternative to housewraps. Enviro-Dri completes the building envelope by protecting the exterior walls and interior wall cavities from moisture intrusion, reducing uncontrolled air movement through the walls, and allowing trapped moisture to escape through the permeable membrane.

Tremco Barrier Solutions' vision is to passionately and profitably lead the residential barrier solutions markets


WTI (Weatherproofing Technologies Inc.) supports building owners and facility managers with a comprehensive inventory of roofing and general contracting services, including roof maintenance programs, roof repair, and manual and drone infrared diagnostics to detect hidden moisture. One of the largest roofing maintenance service providers in North America, WTI has more than 700 skilled field technicians and one billion square feet of roofing under contract, covering thousands of roofs with service agreements.  Our customers receive peace of mind knowing that experienced professionals are handling the service needs of their entire building envelope.  Weatherproofing Technologies Canada provides these same services to our Canadian customers from coast to coast.

Canam Building Envelope Specialists

For building owners with high performance building goals, eliminating gaps, cracks and holes in the building envelope is the first simple step to improving building performance. Because the building envelope is the first line of defense against weather, insects, pollutants and other environmental factors, maintaining its integrity is critical to meeting building performance and energy consumption goals.

The experienced Canam Building Envelope Specialists staff understands the cause and effect of uncontrolled air leakage. We specialize in air barrier solutions for the government, education, healthcare, commercial, condominium and manufacturing markets.

Chemtron International

Chemtron, a manufacturer of adhesives, sealant and tapes, is a Calgary based business. Chemtron researches, develops and formulates products for construction and related industries. The company opened its doors in 1958, expanding and improving in the ensuing years. Working hard with local and foreign industry leaders, Chemtron is dedicated to formulating innovative products, always maintaining the highest quality of standards.