Hairline Crack Repair - Fill, Bond, & Seal Concrete, Bricks, Foundations, Structures, Flowable, Horizontal Surfaces, Indoor & Outdoor (9.5 Ounce)

The product dried in the tubing before I could get it out. It is a two part compound which did not mix before applying, despite me following the directions to shake it beforehand! So there was a thin liquid which came out, and went everywhere and a thicker component. The whole project was a total disaster! A mess. Now I have to figure out how to remove it if that's even possible. So disappointing.

The reviews were all over the place on this product. I think mostly because there is an misunderstanding of what the product does. First, only half the tube is filled with product so do not be surprised by that. Second, this is NOT epoxy or flexible crack sealer. It is a two part urethane and dries hard. Third, this product is very thin and low viscosity. That allows the product to penetrate hairline cracks, suggest only using on max 1/8" wide and preferably less. Fourth, if there is ANY water in the crack, the product will swell and bubble up slightly (all urethanes do this). With all those caveats, I found the product easy to use and effective. Will have to wait for weathering to tell if it will hold up.

The product looked good on the Amazon listing -- what's not to like about epoxy? But, when I opened the canister, a bunch of liquid squirted out all over my bench. When I tied to apply it to my concrete fractures, again only thin liquid came out, until the plunger jammed at about 2/3 of the canister. Apparently, the epoxy had decomposed in storage, and failed to mix properly. Waste of time and money.

Dried and looked terrible...

Summary: There are so many variants of sealants; you can spend hours trying to read about all the different offerings at a big box store.Recommendations: If you don't use the entire tube in about a week, two at most, it will very likely dry out. I try to identify all the different projects I will be using the adhesive / sealant on, and knock them out over a weekend. Weather (e.g. high humidity) can also play a huge factor in cure rates/times. Some sealants / caulking can be smoothed over with various silicone or plastic scrapers, so testing your finish tools on a test area is definitely worth the extra effort.Conclusion: At $22 for a 9,5oz tube, this is very much on the expensive end of the offer price range, and RAPID PATCH STORE only offers 6 products with very few ratings/reviews. Rating this 3-stars (cost, non-specialty), and would find a brand with more specialty offerings.

Not sure what happened when I applied this product but it looks like something went wrong. I followed all the instructions and it applied OK but when I checked on it the next day, I saw some strange results.First, some of it expanded which I was not expecting - sort of like expanding spray foam. The material was hard like plastic whereas I thought it would remain pliable.I scraped the stuff that had expanded above the surface and noticed a bunch of air bubbles as well. I'm thinking this isn't good either as water is just going to find its way into these and create more problems.Overall, very disappointed as it created more work for me as I now have to clean this stuff out of the cracks and use another product to do the job correctly.