Liquid Rubber Foundation Sealant - Basement Waterproof Sealer, Black, 1 Gal — Open-Box, 12% Off

SUPERIOR FLEXIBLE SEALANT: Liquid Rubber's foundation sealer creates a permanent waterproof membrane for basement waterproofing, foundation leak repair, shower liners, and planter boxes. This professional-grade sealer delivers unmatched protection with 900% elongation, preventing leaks and water damage more effectively than traditional sealants

COMPLETE BASEMENT WATERPROOFING SYSTEM: Surpassing basic concrete paint, concrete sealers, and standard waterproof agents, this waterproofing membrane is designed to seal and protect against active leaks and moisture, making it perfect for basement leak and foundation repair. Seamlessly compatible with self leveling concrete applications

VERSATILE CONCRETE CRACK FILLER: The professional-grade rubber coating and rubber waterproofing technology maintains flexibility in all temperatures, preventing future cracks and damage. This liquid rubber waterproof sealant provides superior adhesion to concrete, masonry, wood, metal, and foundation surfaces, making it an ideal choice for your DIY projects

MAXIMUM COVERAGE & PERFORMANCE: This high-build basement sealer goes on like waterproof paint - Interior basement surfaces: 50 sq ft/gallon (requires: 2-3 coats), Exterior concrete sealer outdoor surfaces: 20 sq ft/gallon (requires: 3-4 coats). Apply between 50°F-90°F. For complete protection, use the rubber sealant with Liquid Rubber Geo-Textile on joints and transitions

IMPORTANT USAGE GUIDELINES: Product goes on BROWN but dries Black; The water-based foundation sealer formula contains zero VOCs for safe indoor application. No mixing required! Apply by brush, roller, or professional sprayer as part of your basement waterproofing system. Not suitable for walking surfaces due to tackiness when cured

FOR A WATERTIGHT SYSTEM - Use rubber sealant with Liquid Rubber Geo-Textile on joints and transitions, fill small cracks with Liquid Rubber Sealant & Adhesive, and bridge joints, seams, vents, and protrusions where movement may occur. Scroll down for full application steps

Easily complete your basement waterproofing, foundation leak repair, shower liners, and planter boxes projects with our professional-grade flexible sealant and liquid rubber technology. This advanced formula creates a permanent foundation waterproofing membrane engineered for protection. Perfect for concrete crack filler, concrete sealer, and basement foundation repair, our basement waterproofing system delivers professional results for DIY and contractor use. The waterproof paint and foundation sealer system combined with our seam tape and adhesive and sealant caulk offer superior protection. When ordinary rubber sealant, concrete paint, rubberized paint, or rubber waterproofing won't suffice, our advanced coating excels on concrete, masonry, foundations, and basement surfaces. This waterproofing membrane system integrates with your foundation leak repair strategy. Compatible with other waterproofing systems, while providing superior adhesion and flexibility. Use for house foundation repair projects or targeted basement repairs.. Application: Prepare surface by ensuring it's clean, dry, and structurally sound. Apply 2-3 coats for interior basement (50 sq ft/gallon) or 3-4 coats for exterior applications (20 sq ft/gallon). Maintain 50°F-90°F. Allow 4-6 hours between coats. For optimal results in foundation crack repair, basement waterproofing, shower liners, and planter boxes, use seam tape at joints. Our water-based, zero-VOC foundation sealer formula requires no mixing and stores well when sealed and above freezing. Tips: Apply heavy, consistent coats using brush, roller, or sprayer. Remove painter's tape while wet. When used as part of a concrete sealant system, ensure proper preparation and drainage. For DIY, work in manageable sections. Contractors can achieve optimal coverage using airless sprayer for large-scale projects.