Overview Geocel® 2300 Construction Tripolymer Sealant is the sealant we trust for professional underdeck installations. Specifically selected for OASITek® systems, it delivers long-term water protection, flexibility, and aggressive adhesion where it matters most. Designed for demanding exterior applications, Geocel® 2300 creates a durable, watertight seal at joints, seams, fasteners, and transitions—helping ensure your underdeck system stays dry and protected season after season. Unlike standard silicones or acrylic caulks, this tripolymer formula remains permanently flexible, expanding and contracting with temperature changes without cracking or losing adhesion. Why You'll Love It - Creates a long-lasting, watertight seal in critical drainage areas - Permanently flexible — resists cracking and separation - Excellent adhesion to aluminum, vinyl, wood, and coated surfaces - Withstands rain, heat, cold, and UV exposure - Paintable after 24 hours - Professional-grade performance trusted in exterior construction What's Included - Geocel® 2300 Construction Tripolymer Sealant - Quantity based on selected option (1-Pack or 4-Pack) Helpful Notes - Ideal for sealing gutter joints, wall channels, end caps, penetrations, and accessory connections in OASITek underdeck systems. - Commonly used in flashing, roofing details, and exterior construction applications. - Surface should be clean and dry prior to application for best adhesion.
