Extreme Stretch Sealant 10.1 oz. (White) is a premium urethanized elastomeric sealant designed for professionals and DIYers who demand a crackproof, durable finish. Formulated to stretch over 600% and conform to joint movement, it creates a long-lasting, waterproof barrier on virtually any surface. Its low-odor formula tools smoothly, cleans up with water, and is paintable in just two hours—making it ideal for everything from windows and doors to countertops, trim, siding and more.

Whether you’re sealing baseboards indoors or weatherproofing exterior siding, this versatile sealant outperforms traditional acrylic and silicone products. It exceeds ASTM C920 Type S, Grade NS, Class 25 requirements, resists mold and mildew, and holds up in extreme temperatures (–30 °F to 180 °F) without cracking or peeling.

Key Features

• Stretches up to 600% for a crackproof, flexible seal
• Exceeds ASTM C920 Type S, Grade NS, Class 25 standards
• Waterproof, moisture* and mildew-resistant formula
• Paintable in as little as 2 hours; won’t dull or shine through finish
• Cures in 24 hours and remains permanently flexible
• Adheres to wood, metal, glass, vinyl, masonry and most building materials
• Easy water cleanup; low-odor, professional-grade formula
• Seals gaps up to 3 in.; covers up to 55 linear ft. (3/16″ bead)

⚠️ WARNING: This product can expose you to Silica, crystalline known to the State of California to cause cancer. For more information, visit www.P65Warnings.ca.gov.