It was 1928 when William Treuhaft opened his small roofing materials manufacturing plant in Cleveland, Ohio. The company was called Tremco. Today, that single plant has grown to become the RPM Building Solutions group, an RPM International Inc. affiliate company employing over 3,500 people in dozens of locations around the world.

The RPM Building Solutions Group consists of operating divisions specializing not only in the manufacture and sale of roofing materials and services, but construction sealants, glazing and gaskets, waterproofing systems, concrete admixtures and sealers, grouts and mortars, 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 sustainable, high performance buildings that are energy efficient, have limited environmental impact and operate with the lowest possible life-cycle costs.

The RPM Building Solutions Group consists of Tremco Barrier Solutions, Tremco Commercial Sealants & Waterproofing, the Euclid Chemical Company, Tremco Roofing and Building Maintenance, and in Europe, Tremco illbruck. The facilities of each company are ISO 9001/9002 Registered.

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 replacement to comprehensive facility asset management, we are uniquely qualified with leading products and services to deliver single-source solutions from coast to coast. 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.

Tremco Commercial Sealants & Waterproofing is North America's foremost supplier of sealant, weatherproofing, and passive fire control solutions for commercial and residential construction and industrial applications. For generations, Tremco has successfully provided products and services to architects, engineers, contractors and building owners worldwide. When it comes to protecting and weatherproofing the entire building envelope, Tremco Commercial Sealants & Waterproofing is uniquely positioned to provide single source products, services and solutions. Tremco Commercial Sealants & Waterproofing is committed to providing sustainable design/building solutions which achieve economic, social and environmental balance.

Tremco's Euclid Chemical Company division is an industry leader in the concrete and masonry industries and is divided into two product and service platforms, construction products and concrete admixtures. With world headquarters in Cleveland, OH, Euclid is aggressively pursuing sales and manufacturing opportunities throughout the U.S., Canada, Mexico and South America. Additionally, it is expanding its international presence with marketing partnerships in Asia-Pacific and the Middle East. Euclid's specialty products include: floor hardeners, curing and sealing compounds, grouts and mortars, concrete and masonry repair systems, concrete admixtures, decorative concrete through the acquisition of Increte Systems, architectural and engineering services and extensive technical and customer support. Originally started as a family business, Euclid became part of the RPM family of companies in 1984 and part of the RPM Building Solutions Group in 1999.

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 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, however…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.