StoneTech Heavy Duty Grout Sealer, 1-Gallon (3.785L)

Used this in the past when it was DuPont. Do two coats, clean with Hydrogen peroxide and a little comet cleanser where really dirty. Rinse and recoat if necessary. Mine last ten years before recoating.

Before trying this product I tried the one made by Mapei (same fabricator as the grout used) and despite the Mapei sealer bottle said will not change the appearance of the grout it definitely darkened it at the two areas i tested and the grout stayed dark after 72 hrs. So i decided to try this product to seal my grout. Despite being a lot more expensive than the Mapei sealer it DID NOT change the colour of my grout. I wouldnt have made so much as a fuss if the tiles weren't Italian porcelain 64" x 32" tiles but for the price i paid the tiles no way i was gonna cheapen on the sealer! I highly recommend this product. Easy to apply. Excellent procuct!

Did a lot of research about products & process. Settled on this due to the excellent reviews. Couldn’t find it in stores so ordered from Amazon. It works as described. Used it to seal tile backsplashes in kitchen, bathroom showers & tile floors in 80% of our new home. It doesn’t change the color or finish of the tile or grout. Really happy with it.

We found this product because my husband used to work in the construction industry and this is what the pros recommend. We built a new home last year in a new neighborhood and, of course, had to seal all of the new grout in the bathrooms and kitchen. Almost none of our fellow new neighbors knew to do this. We have white and off-white grout throughout the entire house, as do our neighbors. But it's been a year now since we moved in and sealed and we are the only ones who still have grout that looks EXACTLY like it did the day we moved in. And we have had kids trample mud and gunk all over it, spilled dark pigminted liquid and powder makeup all over it, and spilled coffee etc on it. This stuff is the ONLY sealer you want to use! And it's easy to apply! My only advice is the same as another REVIEWER..DON'T use a roller or foam brush. Get a GOOD quality artist chisel brush and use a plastic cup. Went through a foam brush and a foam grout roller before finally breaking down and spending $7 on a chisel brush. After that it went SO fast and was super easy. Just wait 15 min between coats and do 2 coats and you are done! And it really doesn't smell much at all.

I received this chemical frozen have Ice not very happy because this chemical is useless for me