2-Part Set | Swimming Pool & Spa Repair | Easy DIY | Fix Cracks Leaks Underwater or Above | Concrete, Fiberglass & Variety of Other Surfaces | by Atlas Minerals

This stuff is fantastic! I help to maintain the community pool for our condominium association, which is an oval pool with fiberglass sides and a plaster bottom. The caulk between each of the fiberglass panels had deteriorated and we were losing significant amounts of water through the seams. We considered draining the pool to re-caulk the seams prior to opening, but with the heavy storms and flooding in our area, we were afraid that hydrostatic pressure could do further damage to the pool. After quite a bit of research I found this product and it seemed like the perfect answer. I cut the compound, including the cardboard tube, in sections about 1 inch long from each tube and mixed/kneaded the two materials per the instructions. I then rolled the product into strings about the thickness of a cigarette and applied them to the seams, both underwater and above water. When I ran out of material, I mixed more, doing it in this fashion to ensure that the product didn't begin to harden before application. Application was simple, and it was easy to smooth the material into place and ensure a tight seal with just my finger. I sealed all 10 seams with one set of the product. I checked the seams after an hour, and every seam still looked perfect and the product was literally as hard as a rock. Time will tell if the product holds up as promised, but I see no reason why it should not. Using this product was actually far easier and less expensive than using Vulkem Seal or a traditional caulking product, and was easier and neater to apply. I also expect it won't deteriorate like other sealants. Based upon my experience so far, I would definitely recommend this to anyone requiring a sealant for similar purposes. I also intend to make this product known to my local pool supply company to recommend to others with similar issues.

Far easier to spread on a wet surface with wet gloved finger than dry. Handled with wet gloves it is as workable and easy to spread/push into cracks with a finger as clay or auto body filler, almost impossible to get it to stick to dry concrete and will not likely bond well either.

Worked well! I purchased this because I needed to replace a weir door and that mean destroying the seal between the pool tile and the skimmer. This was easy to mix and apply and began to harden in a couple of hours. My only issue was that it did make the surrounding water cloudy during the application. So you'll need to stop, run the pump for a few seconds, and then continue. I've never used an underwater putty so that could be a common thing between all of them, but it's noteable. But I can't argue with the results. It looks good and I haven't noticed the water line dropping more than usual so I'm assuming it's holding water just fine.

This product works as expected. Be sure to kneed it well. When you have left over stored away. Do not use it if the white part is crumbly.

This product is amazing! It totally exceeded our expectations . We had a few holes and cracks in the grout of the tile of our pool that we have been contemplating for over a year to patch up, but we’re very skeptical about the products out there. One of our friends recommended it and we saw this exact product at the pool supply store where we buy our chemicals. So we bought it off of Amazon cheaper than the store .Totally waterproof very good adhesive ability. Make sure you clean the specific area of application meaning it should be free of mildew and or algae. You might need a plastic small spatula to spread it out. Just cut equal amounts mix well it’ll get warm and you have to move quickly. Of course the final look is a matter of the artist applying the product, but it does what it says it’s supposed to it’s sealed all our cracks , very durable good quality and great value for your money. If you have any cracks or holes in the grout of your pool, we highly recommend you buy this now. Don’t hesitate like we did. Good luck.

Our pool has some areas where some concrete faux rock wall dips below the waterline. We were getting some separation along the seams and losing a lot of water behind. This stuff sealed the gaps and cracks very well, cured quickly and without shrinkage, and is providing a nice seal. Tips: Get the two part epoxy. The all in one is significantly harder to work with. If I only purchased the all in one, it would be 3 stars. The two part is 5 stars. I found it easier to work with my bare fingertips, keeping them wet. I drained the pool down a couple feet to work from my kayak, so I was working above water. Dipping my hand and sometimes the putty in the water was helpful to work the putty into tight areas and feather out a good seal. Bottom line is I’ll be keeping this on hand at all times as I’ll have to inspect this faux rock wall at least annually to keep it well sealed.

The concept is really simple, the instructions clear, and the process trivial. Cut two slides of equal length, one from each tube, work them together until thoroughly mixed into a uniform paste (it does not stick to fingers, at least not enough to cause any problems), apply where needed, let it cure. I used it in two places on my gunite pool wall to repair seals between the plaster and the tubing, one above the surface (refill) and one below (the vacuum cleaner outlet). Easy to apply in air, tricky under water, because it mixes well with water, so that any manipulation that increases the surface in contact with water also works to dissolve the mix. I found it best to push the mix into place and not worry about the finish until after it had time to cure. As for curing: cured quickly in air, but very slowly (noticeably more slowly than the instructions would have you believe) under water -- perhaps it's because my pool is salt water? The result is more like plaster than like expoxy -- it holds, but it's not especially strong. I still recommend it forits ease of use, and also because I have not found anything better (short of emptying the pool to the level of the repair to carry out the repair in air).

Todo llego ok. Muy buen producto.

Worked great for sealing my pool light cable. Sets fast

Make sure to use cloves

Worked perfectly for intex big swimming pool. All benefits as described.

didn't test it under water