Damtite 07121 Gray Waterproofing Hydraulic Cement, 10 lb. Pail

used this to repair a Fountain we have in our front porch area. works Great. my only advice is the instructions say setup on 5 mins Do not trust that found out it sets up in 3 minutes and wow was so surprised. rock hard in 3. had to redo the repair once but works great after i learned how fast it sets up.

This product did a great job on my pool repair. Was very easy to mix and use. Works as advertised.

Excellent product it does stop leaks, easy to apply and what I like most about it you can apply a second and third coat after it dries if needed. (Important) mix small batches each time it set up between three and five minutes. This product is much better than anything you can buy at Home Depot or Lowe's!!

Used on daughter's basement and had no leakage during a 4" rain. Held as advertised. Where they had not got to yet, seeped a lot.

I have a rather large outdoor fountain in my dining room. (Always wondered why people put water fountains outdoor where they spend so little time.) I enjoy this fountain year round, night and day. Been in use for over ten years. Started getting a very small leak from a tiny crack. I emptied the fountain, followed instructions and presto! No leaks. I put 3 thin layers on the bottom, allowing each one to dry thoroughly before applying the next. But be quick-this stuff SETS in like 15 minutes. Directions indicate you can repair with water inside a pool, etc. but I chose to do the 3 outer layers and one inner layer. Sure have ALOT left over. Goes a long way.

We tried this on a concrete bird bath that had been leaking. We followed the directions precisely and layered it on top of the well dried concrete. It dried and looked great for a couple of days. Then the cracks appeared. It rained and the water just poured through. Then the material started to flake off and now it is half removed. In less than two weeks the material has just broken apart and is looking just as it did before we treated it. Overall we are totally dissatisfied with this product for this use. I cannot imagine how this would work in a pool.

Worked just like they said it would. Make sure to use in small increments or It will get hard fast on you

This stuff appears to be awesome. Looks great , applied super easy and smooth. This is the first day. I applied it to sidewalk and inground pool