Epox-Sci's Instant Install 29~8 oz. Knife Grade epoxy. Granite Stone Tile Crack and Chip Repair/Joint or Installation Adhesive. Tintable with Our EZ-Tint 4 Color Pack.

I purchased this epoxy product back in April 2022 and again in Dec 2022. Worked great both times. Highly recommend! The first repair was to "clear" fill a crack in a marble floor where the slab under neath cracked. Next job was to filled travertine holes to keep dirt from accumulating. Note the cracks and holes must be completely free of dirt, oil, wax and water. The clear epoxy picks up the color of the marble and travertine and is almost invisible, matching the stone filler used by the factory. The Dec Job was to fill small chips 1/8" to 1/4" in a ceramic tile. The tile was a beige with brown/gray streaks. Since the chipped holes reveled the red/dark brow tile, the color needed to be matched. ordered the EZ-Tint 4 Pack color power pack recommended by the seller to mix with the epoxy. Unfortunately, I could not find a combination with these four color tints to match the tile. I went against the sellers recommendation no to use liquid tints. I bought a liquid tint specifically for epoxy gel coats ( Fasco Epoxies-Beige Pigment for Epoxy Resin, Gelcoat, Paint - 4 oz). To that I added Brown and Black EZ-Tint 4 Pack color power to get the shade I wanted. The critical thinag I learned by experimentation is the liquid color must be mixed into the "RED" Instant 29 material before mixing in the "Black" Instant 29 or the epoxy does not harden. Use only a small amount og liquid colorant to not screw up the epoxy. Note: any moisture, even high humidity prevents or inhibits epoxy from curing properly. I like to clean with MEK. Besides the razor for scraping excess, MEK can remove thin epoxy film in the first hour or two. Always work with small batches. Starts to gum/harden in about 15 minutes at 70F. Do not use gummy epoxy-it wont adhere and smooth properly. If you screw up use MEK to remove the epoxy before it cures. By the way MEK fumes are nasty. I suspect that those buyers who rated the product as poor may not have properly prepared the surface (i.e sand the underlying gel coat or fiberglass on their boat) or had too high of a moisture content on the part or in the air. While the manufacturer did not specify a minimum working temperature, I suggest you have the part you are repairing and air temperature above 60F. A lower temperature may not cause the necessary chemical reaction to harden the epoxy. Follow the instructions for best results.

I used dry powdered dye for concrete to match the color to fix a long crack that was forming in my granite. Dye costs about $5 at a home improvement store. Used two plastic spoons - one for each container - to get equal proportions. Mixed epoxy is a bit stiff but I was able to force it down and it did settle a bit into the crack. The first batch was not dyed and it looked shiny to me. I then dyed the next batch and it is perfect. I let it set for 30 minutes and then razored off the excess proud to the surface.

Product was very thick and a little tough to mix, which was kind of nice because we were using this to repair a seam in a reused granite countertop after updating our kitchen. It was thick enough that it didn’t drip through the seam and instead had to be pushed into. During removal of our granite, we had chipped a large piece off at the seam (shown in pictures). We were very happy with how this product filled both the seam and allowed us to reattach the chipped piece of granite. However, we did also have a small hairline crack of which we applied the product and did not get the intended result there. Once dried, we scraped with a razor and all of the product came out of the hairline crack. Overall, I’m happy with the larger seam and countertop repair so I’m giving the product 4 stars. Please check out the pictures to see how it turned out. Some observations: it hardens pretty fast. The longer you wait, the tougher it might be to scrape off. Make sure you’re using a new razor. And if you’re using this on countertops, consider trimming with painters tape. For our larger seam, this made the scraping process so much easier.

We had a crack that appeared 10 years after installation at a weak point where the undermount sink was bolted to the granite, and the crack had gotten wide enough that we could attempt a repair . We researched and watched videos for various products, and this won hands down. It was incredibly easy to apply and clean up. It looks great. We bought a packet of different granite powders to come up with a color to add to the epoxy and some granite buffer blocks. The patch is visible of course, but doesn't stick out like a sore thumb like the crack did -- it looks good and stabilizes the crack.

I bought this to fix a HEAVY concrete fountain. The bowl of this fountain is 36 inches wide and almost 3 inches thick. I'm guessing it weighs about 220 pounds empty. While moving it I set it down too roughly and it cracked just about in half, all the way through. I set it up on it's side so that the broken off part could rest straight down on the other half. After easily mixing about half of the product I slapped a generous helping on one half and set the broken half down on it. I used way too much adhesive but the squeeze out chipped off easily with a screw driver, just like they said it would, after about an hour. I waited until the next day as it was evening anyway and the bond was clearly rock-solid. Still, this thing is so heavy, and there is so much leverage from the size of the break, plus the probably 25 gallons of water that it holds ... but I needn't have worried! It never even thought about breaking while being man-handled and carried by the edge. And, not one drop has leaked after filling the fountain up. I have total confidence in the repair, which I did not expect. I'm totally impressed! None of the reviews I read described anywhere near this level of stress test. I honestly wasn't sure at all that it would work. The only think I might wish for is a solvent that could thin the consistency a bit. It's really thick, and because of that didn't compress quite as much as I would have liked to make an invisible repair - but to be fair, as I mentioned, I think I used way more than I should have in the first place.