NOON's UP Super 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 !!

This worked to seal tile. Just wish the spray nozzle had a stream or spray option. It only does spray. Also wish the bottle was a bit bigger for the price. It has no smell which is great.

It did not work. I used it on two bird baths that would not hold water. First time I applied it like I would if I were spray painting something. When it didn’t work I applied it again heavier. It didn’t work the second time either. It didn’t show any sign of slowing down. There are no holes in the birdbaths. They are made of resin for some reason stopped holding water.

Couldn't do without

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.

Bought this to seal a new concrete birdbath. I did 3 coats and it appears to be working great.

I used to seal a birdbath and it helped so much. I did about 2 to 3 coats letting it dry in between each one.