Easy pre-Mixed Permeable Joint Compound. Color Grey, 33 pounds

Easy to work with and hardens better compared to the polymeric sand products out there. This product is oxygen activated so as soon as you open the package it starts working but you have ample time to use it. The bonus is that if you can’t use all of the “sand”, you can store it as long as you cover it with water. The product hardened for me in about 24 hours. My only gripe is the sand residue that is left over after application. This is especially annoying if you have a pool because it’s hard to sweep off without the product getting into the pool and the residue comes off easily enough but there is so much of it. That is why I gave it 4 stars.

I had replaced the polymer sand in our flagstone patio twice! I didn’t want to do it a third! After much searching I bought Rompox. I am so glad I did! It worked great! If it makes it through the winter I will purchase more to fix my other patio!!!

I used this product for my slate patio. Yes it is an easy and quick and simple product and I would recommend it. However this product should be used for deeper crevices in between the stone or slate or brick in order for it to take the way it should. Great simple product.

This is a easy no mix filler and the only mix I found to dry hard enough without cracking a few days later.

I tried all available polymeric joint compounds on my flagstone patio. Rompox is by far the best. Alligator Dust is terrible and a ripoff. Rompox is expensive but is a superior high quality product. Nothing else compares

Easy to use, but doesn't seem like it will last. Cracking already.

It did what I bought it for. Thanks