GorillaWaterproof Patch & Seal Rubberized Sealant Spray, Black, 16 Ounce (Pack of 1) - Seals Out Water, Air, and Moisture

It works great! Super simple even with my arthritis hands. I have trouble with my strength but this isn’t difficult at all. Not only does it seal, it’s also useful for glueing some things. Like my outdoor camera that slipped down and hanging by the wires.Durability is great, light smell not bad, and I’m able to use for several projects. All of my needs are kind of small projects but definitely needed attention.Of course we all wish it was a larger can, but this one is coveting all my needs at the moment.Will upload video of the projects today, provided no rainfall 7/18/25

I use this stuff inside 3d prints that I need to hold water. No, Calm down, I don't use this to make things food safe or anything. I use inside of things like paint water cups or airbrush cleaning pots. I use it for small planters to protect them from the water. Just things like that. I have made the mistake of spraying it in the house once, it'll never happen again. This stuff is pungent. It's easy enough to apply and it works well for my purpose. It seems to last a while, I've been using things I treated for a long time and still no problem. It's crazy expensive though, so don't waste it.

I've used this product before and seldom have any issues. When i do, it seems the spray comes out more like a hose stream and not a spray nozzle. I shake the can constantly to try to avoid this and it's probably the makeup of the product. Nonetheless, this project was to seal any rust areas in this old HVAC overflow pan rather than spend $400 to replace it and the product sealed the pan as planned from what i can tell. I've used it inside gutters as well when the joints leak with age and it seems to cover and hold up well.

0 stars out of 5. Doesn't work I wasted a whole can trying to fix a crack in a water fountain and after 5 thick layers it's still dripping water. Look for another product. I only put 5 stars because Amazon puts the 1stars reviews all the way down.

Purchase multiple if doing a larger project. One can covered one wall section of my 10×20 tent. Covers well.

It works well initially, creating a solid waterproof seal. I used it on a small roof leak, and it did a decent job at first. The application is easy, and it dries quickly. However, the seal didn’t last as long as I hoped—after a few months, it started to peel and crack, especially in harsher weather conditions. For short-term fixes, it’s fine, but I wouldn’t rely on it for long-term durability. The product could benefit from a stronger, longer-lasting formula.

I bought the gorilla waterproof patch and seal rubberized sealant in black to repair a roof vent pipe flashing. I had repaired this flashing a year ago with a sealant tape. After removing the old sealant tape used previously it left me with a large hole. I used an aluminum tape to first patch the hole and then applied gorilla rubberized sealant over the aluminum tape. After completing this job the aesthetics looked better than when I used the sealant tape. I think this is a great product for someone looking for an easy waterproofing solution. The spray sealant was easy to use and control in tight areas. Another nice thing the product dries fast and saved me from going up and down from the roof multiple times since using several layers. I would defiantly buy this product again if needing a waterproofing solution.

Review: I recently tried out the Gorilla Waterproof Patch & Seal Rubberized Sealant Spray to patch up some tiny rust holes in my gutters, and here's my balanced take:Pros:Ease of Use: This spray is incredibly easy to apply—no messy brushes or applicators needed. Just shake, spray, and you're done!Versatility: It works on a variety of surfaces, including metal, concrete, wood, and more. Perfect for sealing gaps and cracks in gutters, roofs, and even outdoor gear.Quick Drying: Dries relatively fast, allowing you to move on to the next step of your project without long waits.Self-Leveling: The formula levels itself out, ensuring a smooth, even coat that covers small gaps and cracks effectively.Cons:Multiple Coats Needed: For optimal results, you might need to apply multiple coats, which can be time-consuming.Runny Formula: Some users found the spray to be a bit runny, which can affect its performance on vertical surfaces.Clogging Nozzle: The spray nozzle can clog if not cleaned properly after use, making it less effective over time.Tacky Finish: In some cases, the sealant remained tacky even after drying, which can be inconvenient.Verdict: Overall, the Gorilla Waterproof Patch & Seal Spray is a handy product for quick, reliable fixes around the house. It worked well for patching tiny rust holes in my gutters, sealing them up nicely. Its ease of use and versatility make it a go-to for minor repairs. However, be prepared for potential issues with multiple coats and a runny formula. If you're looking for a straightforward solution for sealing leaks, this might be worth a try, but keep in mind it might not be perfect for every situation.