QUAD MAX - Window, Door & Siding Sealant - 9.5 fl oz, White, Cartridge


  • Tough Against All Weather: Maximum durability and application performance with strong adhesion to all materials with enhanced resistance to UV, dirt, dust, and extreme temperatures and proven wet surface application
  • Better Flexibility & Durability: Features 5x stretch and Class 50 Joint Movement capability for long-term durability in any condition with no shrinkage or bubbling
  • Match with Any Color: Free online OSI color match tool offers a match for 9,200+ manufacturer colors 
  • Fast Cure for Quick Protection: Paintable in 1 hour with 24-hour fast cure for quicker protection and an effective barrier for air and moisture
  • QUAD Window & Door System: Use in conjunction with OSI QUAD Foam and OSI Butyl Flash for the toughest air and moisture barrier to maximize energy efficiency—system backed by 15-year Limited Warranty for OSI Certified Installers
  • OSI Support & Training: OSI offers online and offline resources like best practice guides, installation training, with the OSI Certified Installer Program and Protect Your Work Siding Application Training

Discover mother nature’s worst nightmare: OSI QUAD MAX. 

Acting as the first line of defense against the elements, QUAD MAX Window, Door & 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°F to 140°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 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. 

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, you receive a 15-year limited warranty on your installs, 4-Year Certification and access to job aids and Technical Customer Service Support.