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, WTI, Republic Powdered Metals, Tremco Barrier Solutions and Canam. The facilities of each company are ISO 9001/9002 Registered.

Tremco Roofing & Building Maintenance
Tremco's Roofing and Building Maintenance division offers a breadth of roofing and building envelope, general contracting and service solutions designed to meet the most critical facility management and financial needs for owners, managers and architects alike. From roofing system restoration and replacement to comprehensive facility asset management, we are uniquely qualified with leading products and services to deliver single-source solutions from coast to coast and in Canada. Most importantly, each customized solution is designed with one guiding principle in mind: maximizing building performance to reduce life-cycle costs. With one of the largest networks of highly trained, company-employed field advisors, the Roofing and Building Maintenance division is committed to establishing long-term relationships with our customers. The Roofing division also includes Republic Powdered Metals, the founding company of RPM International Inc.