StoneTechHeavy Duty Grout Sealer, 1 Gallon (3.8L) Bottle

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.

Worked perfectly. However, do not use the pro sealer and the regular sealer on the same job as the oil in the pro sealer will leak over and stain the grout that’s sealed with the regular sealer

I used this product to seal the grout on my new tile floor. This sealer does not alter the color of the grout, and works very well (it's one of the best grout sealers on the market)... but I learned a couple of things during the project...Here's some tips:-Make sure to apply the sealer with a quality paint brush that holds and spreads the product well. Don't bother with those roller applicators, paint pads, or artist brushes.-Apply the sealer LIBERALLY moving the brush slowly and let it soak in to the grout for at least 10-15 minutes. Don't worry about getting excess sealer on the tiles. Wipe up the excess sealer with a towel. It does not stain or leave a residue on your tile.-Go back and apply at least 2 OR 3 COATS. When the sealer stops seeping in to the grout, you know you're done.I would have given the product five stars if it would have worked in 1 or 2 coats, but it took me 3 coats to finally get the job done. ....but that is very typical for an "impregnator" type sealer like this. The bottom line is it worked well. Very good product.

My husband tore out the old cracked and dirty grout in our den and kitchen and replaced it with very light colored grout. This sealer worked great! No change in the grout color at all! We used small paint brushes and soaked the grout with sealer. We applied 2 coats in the den and 3 coats in the kitchen and eating area. Excess that got on the tiles washed off easily. I thought liquid would bead up on it. It doesn't, but I spilled a little tomato sauce on it and it came right up without any staining. So far we are very pleased.

Applied 2 coats to the grout between floor tiles after steam cleaning the lines from built up gunk. Waited a few hours and testing with a water dropper. Water beaded up perfectly.

This item works excellent on grout. It can be messy but, if you are prepared with a towel for the drips its not an issue. seals well

This grout sealer did not function as described. My wife and I moved into our new house with new tile floors and light colored grout. We followed all prep/ installation instructions and installed two coats of sealer on our floors. The product failed to prevent grout discoloration in traffic areas. The tile discolors with water spillage or any other liquid indicating water is penetrating the grout through the "sealer". Have used a Dupont product that worked much better than this. We wasted a huge amount of time applying this product. It is possible I received a bad batch given all of the positive reviews on this product, very disappointed with our experience.

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!

I applied it to an exterior tiled balcony that receives heavy rain. It goes on easily with no smell. It has a good water resistance, so far (3weeks). It is water-like to apply, so coating is not thick. I cannot say how it will hold up under intense tropical sunlight. No complaints so far. I suspect I will have to re-apply periodically, but that’s true of all products.