Gorilla 100% Silicone Waterproof Caulk, All‑Purpose Sealant, Mold & Mildew Resistant, Flexible Seal, White, 10 oz Cartridge (Pack of 1)

Gorilla 100% White Silicone Waterproof Caulk is a versatile, all-purpose sealant designed for indoor and outdoor use on showers, sinks, windows, doors, gutters, vents, and more. This white silicone waterproof sealant creates a strong, durable seal for a wide range of home repair, DIY, and professional applications. The 100% waterproof formula is water-ready in just 30 minutes and fully cures in 24 hours for long-lasting performance. This white caulk is mold- and mildew-resistant, highly flexible, and meets ASTM C-920, Class 35 standards, helping prevent shrinking, cracking, or yellowing over time while maintaining a clean, professional finish. Ideal for everyday repairs or demanding projects, it delivers a reliable, multipurpose seal you can count on across a variety of surfaces and environments. DIRECTIONS: TO OPEN: Cut nozzle at a 45° angle to your desired bead size. Completely puncture the inner foil seal. TO USE: All surfaces should be clean and free of dirt, grease, oil, and old sealant. For gaps larger than 1/2", use a backer rod. Best applied above 40°F (5°C). Insert cartridge into a caulk gun. Apply caulk, pushing the bead ahead of the nozzle. Smooth the bead immediately after application, before a skin forms. CLEAN-UP: Wipe off wet sealant immediately with a dry cloth. Isopropyl alcohol may be used according to solvent manufacturer’s instructions. STORAGE: Store in a cool, dry location with nozzle attached. To re-use, remove the nozzle and clean out cured sealant from the tip. MOLD & MILDEW RESISTANT: Cured sealant is resistant to mold. Clean regularly with soap and water to prevent growth on top of the sealant. DIRECTIONS: TO OPEN: Cut nozzle at a 45° angle to your desired bead size. Completely puncture the inner foil seal. TO USE: All surfaces should be clean and free of dirt, grease, oil, and old sealant. For gaps larger than 1/2", use a backer rod. Best applied above 40°F (5°C). Insert cartridge into a caulk gun. Apply caulk, pushing the bead ahead of the nozzle. Smooth the bead immediately after application, before a skin forms. CLEAN-UP: Wipe off wet sealant immediately with a dry cloth. Isopropyl alcohol may be used according to solvent manufacturer’s instructions. STORAGE: Store in a cool, dry location with nozzle attached. To re-use, remove the nozzle and clean out cured sealant from the tip. MOLD & MILDEW RESISTANT: Cured sealant is resistant to mold. Clean regularly with soap and water to prevent growth on top of the sealant.

• Indoor/Outdoor 100% Waterproof Caulk – Durable, long-lasting white silicone sealant for indoor and outdoor use; ideal for showers, sinks, windows, doors, gutters, and vents
• 30-Minute Water-Ready – Fast-curing caulk formula allows water exposure in just 30 minutes, perfect for quick home repairs and DIY projects
• Mold & Mildew Resistant – Protects surfaces from mold and mildew growth; easy to maintain with regular cleaning for lasting performance
• Highly Flexible & Durable – Meets ASTM C-920, Class 35 standards; won’t shrink, crack, or break down over time
• Clean Finish & Long-Lasting Performance – Maintains a professional look without yellowing; formulated for long-term results