Discover the First Line of Defense Against the Elements. Simply put, OSI QUAD® MAX siding & window sealant delivers the toughness that really makes a job last. QUAD® MAX is the next generation of siding and window sealants, providing maximum durability and superior application performance for use in any condition.
OSI caulk

QUAD MAX siding & window sealant is designed for sealing around interior/exterior windows, doors and siding. It bonds to a wide variety of materials without need for a primer such as fiber cement, cedar, brick, stone, coated aluminum, fiberglass, vinyl, PVC, stucco, EIFS, wood, glass, and flashing tapes and Kynar® coatings.

Julia,
On behalf of Lighthouse Louisiana (formerly The Lighthouse for the Blind), please convey my thanks once again to your coworkers for supporting our summer camp for children who are blind. It is a rare thing to see a corporate family like yours, where people get together and give from their own hard-earned paychecks to local groups that are doing good work in the community. As donors, sometimes it’s hard to know what donations to organizations we care about are actually being used for. We consider LAS an important investor in our work, and we cannot thank you enough for helping us serve our clients.

Thank you,
Erin McQuade Wright
Director of Development

We just finished getting new windows from LAS and I can’t be any happier. From start to finish, this job was done professionally. The salesman, Garrett, came to the house on time and explained the windows and the process and answered any questions that we had at the time. He indicated the person who would do the measurements would call and set up an appointment within two weeks and the the windows would be built and installed in about 5 weeks. Well, the job – from the initial estimate to complete install – was three weeks. The installed that completed the job did an excellent job of install, caulking and cleanup. We can’t give them a higher rating. The most amazing thing so far is the look and how much it has cut down on outside noise. I highly recommend LAS and since they are local, from repairs to employing people, we keep it right here at home. We are very satisfied customers.