NOON'S UPSuper Mica-Seal Waterproof Spray | Greatly Penetrating Concrete Sealer Outdoor Waterproof Sealant | Bird Bath Sealant & Outdoor Cement Sealer | Concrete Sealer Spray (16.90 Fl Oz.)

The product is very easy to apply, and the drying/reapplication time is reasonably short. I used this product as a third attempt to reseal my concrete birdbath, but disappointingly I still noticed a leak in one of the areas I thought I had sealed initially and again on the second day. I knew the birdbath was still not fully sealed when I checked the water level a day later and saw that there was no remaining water in the basin. Please see first accompanying photo. I may try respraying the product once more to target the specific leak area, to hopefully remedy the problem. Other than that one location, this product seemed to reseal the rest of the birdbath.ADDENDUM UPDATE:I recently reapplied product to leaking areas of basin and am now happy to report that bird bath is now fully sealed and retains water! Please see second photo above. I was overjoyed. I guess good things come to those who wait!

My concrete fountain has been leaking for a few years now. I've purchased and used a number of products to date, Flex seal, Gorilla to name a few, none worked for long or very well. I have noticed that when I put too much water in the thing the pressure breaks any seal. So I cleaned it up well, then sprayed this on 3x (after allowing it to dry for a while) I filled it about 1/3 of the way and it's been working constantly for a few weeks now !!

Bought to reseal bird bath. Followed instructions, putting on one layer at a time, letting it set, repeated until used entire bottle. Didn't work. Water leaked out immediately.

satisfied

I have a concrete bird bath that had a hairline fracture. I tried this product - sprayed several times, inside the bowl and on the bottom/outside. It didn’t seal enough to hold water. Disappointing.

I use this product to try to see my concrete birdbath, which wouldn’t hold water more than a half a day. I let it dry, and then I brushed it as clean as I could get it, and I applied it rather liberally. And then I did it again. Now it is a month later, and my birdbath has been holding water for several days in a row now. Probably not as long as when it was new, but effectively this works. I probably use the third of a bottle on each application, so I have one more application if I need it. Just follow the instructions.

Used this product on a water fountain and birdbath at my home and it seems to be holding up as expected. Easy to apply and had no problems.

Used on a very old cement/ concrete bird bath,after two applications it is now water proof and doing well.Application was easy and quick,but pay attention to the prep and the drying time