Discover mother nature's worst nightmare - OSI Quad Max. Acting as the first line of defense against the elements, OSI Quad Max Window, Door and Siding Sealant delivers the toughness needed to make a job last. Designed for sealing around exterior/interior windows, doors and siding, Quad Max bonds to a wide variety of materials such as fiber cement, cedar, brick, stone, coated aluminum, fiberglass, vinyl, PVC, stucco, EIFS, wood, glass, and flashing tapes and Kynar coatings. With enhanced resistance to UV and extreme temperatures (0 deg. F to 140 deg. F ) and proven wet surface application, OSI Quad Max is the versatile and durable choice for professional contractors. OSI Quad Max has a fast 24-hour cure and can be painted in 1 hour (dependent on temperature, humidity, and depth of sealant applied). The best window, door and siding sealant OSI offers, Quad Max is flexible with 5x stretch and Class 50 Joint Movement capability so you have zero reasons to worry about a job once you've done it right the first time. OSI offers an arsenal of adhesives, caulks, and outdoor construction sealants for the true professional. OSI - Tougher Than the Elements. OSI offers extensive online and offline training for contractors to protect your work with proper sealant application. OSI's Certified Installer Program offers training for all the right tips and techniques from industry experts for the highest quality installation to make every install a state-of-the-art, professional job to prevent window, door or siding problems. Find out how you can become OSI Certified and build your reputation. When you take either our e-learning courses through our online training program or in-field training, you get trained in the latest professional installation techniques. And upon completion, 4-Year Certification and access to job aids and Technical Customer Service Support.