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.
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