Sashco 10.5 oz. Big Stretch Caulks

Sashco Big Stretch is a high-performance elastomeric sealant designed to move with your home—not against it. Whether you're sealing windows, doors, siding, vents, or trim, Big Stretch offers unmatched flexibility and adhesion to keep gaps sealed and protected. Its super elastic formula stretches up to 500%, making it ideal for areas prone to movement due to settling, temperature changes, or wind. Even first-time users will appreciate its smooth consistency and easy tooling, which helps create clean, professional-looking results. Big Stretch adheres to a wide variety of surfaces including wood, metal, vinyl, drywall, and more, and cleans up easily with water. It’s paintable in just a few hours and resists cracking, shrinking, and discoloration, ensuring a long-lasting finish. With a 40-year durability guarantee and compliance with ASTM C834 standards, Big Stretch is built to perform in both humid and dry climates. It’s also freeze-thaw stable, UV resistant, and spans gaps up to 2 inches wide without slumping. Whether you're tackling a small repair or a major renovation, Big Stretch is a dependable choice for maintaining air and moisture control in your home. Please note: it’s not recommended for roofs, submerged areas, or high-traffic surfaces. For best results, apply to clean, dry surfaces and avoid use on silicone, polyethylene, or wax-based materials.

Feature Benefits

• Stretches up to 500 percent to prevent cracking
• Adheres to wood, metal, vinyl, drywall, and more
• Ideal for windows, doors, siding, vents, and trim
• Easy to apply and tool for clean results
• Cleans up with water for hassle-free use
• Paintable in just a few hours
• Resists cracking, shrinking, and discoloration
• Backed by a 40-year durability guarantee
• Freeze-thaw stable and UV resistant
• Spans gaps up to 2 inches wide without slumping
• Not recommended for roofs, submerged areas, or high-traffic surfaces
• Avoid use on silicone, polyethylene, or wax-based materials
• Helps maintain air and moisture control in your home
• Performs well in humid and dry climates
• Complies with ASTM C834 standards
• Suitable for both professionals and DIYers
• Creates a flexible, long-lasting seal
• Excellent choice for residential repairs and renovations
• Provides a smooth base for painting
• Designed to move with your home’s natural shifts