OSI Quad Max Window, Door & Siding Sealant – 9.5 fl oz Cartridge, 12 Pack

Overview

Meet OSI Quad Max Window, Door & Siding Sealant in a practical, all‑purpose 9.5 fl oz cartridge. This sealant is designed for both interior and exterior applications around windows, doors, and siding, delivering a robust barrier against the elements without sacrificing flexibility. It’s built to work across a wide range of materials and climates, making it a versatile choice for professional projects.

Key Benefits at a Glance

• Strong adhesion across materials like fiber cement, cedar, brick, stone, coated aluminum, fiberglass, vinyl, PVC, stucco, EIFS, wood, glass, flashing tapes, and Kynar coatings.
• UV resistance and durability against dirt, dust, and temperature extremes from 0°F to 140°F.
• Wet surface application capability for effective sealing even in damp conditions.
• High flexibility with 5x elongation and Class 50 Joint Movement for long‑term performance without shrinking or bubbling.
• Color matching via OSI’s online tool with access to 9,200+ manufacturer colors for a seamless look.
• Fast cure and painter-ready: cures to a protective film in 24 hours and becomes paintable in about 1 hour, depending on conditions.
• Professional‑grade reliability backed by OSI’s training and support programs to help ensure proper installation.

Materials & Surfaces

Designed to bond to a broad spectrum of substrates, OSI Quad Max is suitable for coating around exterior/interior windows, doors, and siding. It’s compatible with fiber cement, cedar, brick, stone, coated aluminum, fiberglass, vinyl, PVC, stucco, EIFS, wood, glass, and common flashing tapes, including Kynar coatings. The product’s formulation supports long‑lasting seals in challenging environments.

Application & Cure

• Apply to damp or dry surfaces and expect a fast 24‑hour cure for quick protection.
• Paintable in about 1 hour under favorable temperature and humidity conditions, enabling faster project completion.

In addition to its technical strengths, OSI offers extensive contractor training and a Certified Installer Program. These resources aim to help professionals apply the sealant with best practices, supporting durable installs that stand up to the elements. While results vary with site conditions, Quad Max is positioned as a reliable, professional‑grade option for weatherproofing around windows, doors, and siding.

Two Practical Lists for Pros and Homeowners

• Prospects for color matching, fast curing, and broad material compatibility support flexible project planning.
• Potential for long‑term protection against air and moisture ingress in exterior and interior applications.

• Common uses include sealing around new or retrofit windows and doors, and around siding joints in varied climates.
• Ideal for projects requiring a durable, flexible seal that can move with joints without cracking.