OSI

OSI® was born on the jobsite, created by a group of tradesmen who demanded better performance from the products they used daily. Their dedication led to the development of one of the industry's toughest portfolios of construction sealants, adhesives, foams, and tapes. These products are designed to withstand the elements and offer long-lasting protection. More than just product creators, OSI® is committed to empowering customers with the knowledge and technical expertise necessary to achieve superior installations and ensure structures perform at their best.

You can find OSI® representatives, trainers, building science experts, and product development teams actively working in the field, collaborating with customers, and listening to their needs. By partnering with top industry manufacturers like Therma-Tru Doors, James Hardie, and Jeld-Wen Windows and Doors, OSI® delivers solutions backed by scientific data and real-world application outcomes. This hands-on approach has earned OSI® the trust of numerous customers and the endorsement of major brands, providing tested and proven solutions to everyday construction challenges.

As the world evolves, OSI® remains committed to meeting new demands by leveraging relationships with builders, remodelers, tradesmen, and industry leaders. OSI® will continue to recruit, nurture, and inspire the next generation of building professionals, equipping them with the products and knowledge needed to build structures that are "Tougher Than The Elements." OSI® is dedicated to upholding the legacy of strength and reliability in the construction industry for years to come.