100% Silicone Waterproof Caulk – All-Purpose Sealant, 10 oz Cartridge, White (Pack of 1)

This silicone-based formula offers excellent waterproofing and sealing properties, making it ideal for a range of applications including kitchens, bathrooms, and windows. I recently used this sealant to address a few gaps and leaks around my kitchen sink and bathroom shower. The application was straightforward—after cleaning and drying the surfaces, I applied the caulk using a standard caulking gun. The sealant went on smoothly and adhered well, filling the gaps and creating a watertight seal. The curing process was quick, and once it dried, the sealant created a flexible, long-lasting barrier. It effectively prevented any water leakage, which has significantly reduced the risk of mold and mildew in those areas. The white color blends well with most surfaces, providing a clean and professional-looking finish. The silicone formula is resistant to mold and mildew, and it holds up well against moisture and temperature changes. It’s also easy to clean up, with any excess coming off easily before the sealant cures. Overall, the Gorilla Waterproof Caulk & Seal 100% Silicone Sealant is a top-quality product that delivers excellent performance. It’s perfect for sealing around sinks, showers, windows, and other areas prone to water exposure. Highly recommended for its effectiveness, durability, and ease of use!

I picked up the Gorilla Waterproof Caulk & Seal in white (10oz cartridge) to redo the seals around my bathroom tub and a couple of kitchen windows, and it didn't disappoint. As a DIYer who's dealt with flimsy caulks before, this stuff is tough, easy to work with, and holds up well against moisture. Pros: Super Fast Water-Ready Time: It's ready for water exposure in just 30 minutes, which is a huge win for bathroom projects. I was able to use the shower the same day without worrying about leaks. No Shrinkage or Cracking: Unlike some cheaper sealants that crack after a few months, this one stays flexible and looks good long-term. It won't yellow over time either. Mold & Mildew Resistant: Perfect for humid areas like showers and kitchens – no mold buildup even after months of use. Excellent Adhesion: Sticks great to tile, glass, metal, and porcelain. I used it on window frames and tub edges, and it hasn't budged. Easy to Apply: Smooth consistency that tools nicely for clean lines. The 10oz cartridge gives plenty for multiple small jobs. Cons: Not Paintable: If you need to paint over it, this isn't the one (it's 100% silicone, so paint won't stick well). Strong Odor During Application: The vinegar-like smell is noticeable, so ventilate the area well. Cure Time: Full cure takes 24 hours, but the quick water-ready feature makes up for it. Overall, this is one of the best silicone sealants I've used – better than generic brands and on par with premium ones like GE or DAP. It gets consistent 4.5–4.8 star ratings across sites, and for the price (usually $10–$15), it's a solid choice for home repairs. Highly recommended for anyone tackling wet areas! I'd buy it again in a heartbeat.

I used the Gorilla Waterproof Caulk & Seal Silicone Sealant for a few spots around my bathroom tub and kitchen sink, and it performed exactly as advertised. The sealant goes on smoothly with a steady bead, sticks well to tile and metal, and cures into a flexible, waterproof finish that feels tough and long-lasting. I love that it’s truly waterproof once set — no shrinking or cracking after a few days of showers — and cleanup was simple with just a damp cloth before it dried. Ideal for bathrooms, windows, doors, and even small outdoor jobs. For anyone needing a dependable sealant that holds up to moisture and everyday wear, this Gorilla silicone is a solid choice!

The Gorilla Waterproof Caulk & Seal Silicone Sealant is a truly exceptional product. When you need a reliable, professional-grade seal that you know will hold up against the elements, this is the cartridge to reach for. The application is smooth, the gray color is clean and consistent, and the resulting seal is absolutely watertight and durable. It lives up to the Gorilla reputation for being tough and long-lasting—this is a 100% waterproof solution that provides real peace of mind for window and door projects. The only reason this isn't a five-star perfect rating is purely a function of convenience versus cost. I needed this caulk quickly for a weekend project and ordered it online. I have no doubt that I could have saved a few dollars if I had been able to go to my local hardware store to purchase it, but the quick delivery and knowing I had a premium sealant ready to go made the extra cost acceptable. If you prioritize quality and need immediate results without waiting for a trip to the store, this caulk is absolutely worth the investment. It’s a top-tier sealant that performs exactly as advertised.

Gorilla products are the absolute best! Used around the inside of our bathtub and is working as a champ of course. Going to be getting more Gorilla products to go around our windows where needed.

We had our shower replaced totally past the studs two years ago. The construction sealant used started to fail. Ordered this on a hunch. Cut out the old. Treated the areas with bleach. Let it dry thoroughly and applied your product. Very easy to use. Holding up quite well.

Smells like hell. Works well. A bit hard to squeeze, but even flow. Looks great, much more clear than the last one I tried and the skin forms better than some others in my opinion. Easy clean up. Just wish it didn’t feel like I was gassing myself out or having to use two hands to get any product

It works great, but its very difficult to smooth out, nearly dries instantly and becomes impossible to maneuver or work with. very expensive for the small bottle you get. if doing your tub, you will need 2 bottles minimum. looks nice, came in white so not clear, small size.

Very nice product

Can save a lot of money

Nunca había usado la marca, pero francamente me quedé asombrado por su calidad. Se adhiere bien a las superficies, además de ser muy buen sellador. Muy recomendable.

Nice product

We used this to try to fix the lint trap on my dryer. The metal screen was rusting and tearing along the edge. No way to replace the screen or purchase a new lint trap. One bad of silicon asking the torn edge and seems to work perfectly fine.