Dupont Stonetech Professional Heavy Duty Sealer - 1 Gallon

I bought 6 gallons of this product to seal the 3200 square feet of travertine flooring I had installed. I was afraid that 6 gallons would not be enough, but I ended up with a half gallon left over. The installers applied the sealer and they did not have any problems with it. As can be expected, there was a strong chemical smell as it dried and for a little while after. It was smelly, but not overwhelming and it went away after about a day. The sealer brought out the colors in the travertine without making the tile appear wet. I am happy with this product.

Granite and Marble sealer works well

I just sprayed it on the old brick walls so don't know yet about how well it will seal them but it was easy to spray and cleanup.

I’ve been using this product for the last few years, unfortunately it’s hard to source it locally, thank God for Amazon, I could still buy this product, hands-down number one sealer I’ve ever used. Worth every penny and lasts a long time.

Disappointing.