StoneTech Heavy Duty Grout Sealer, 1-Quart (.946L)

No color change in grout. Easy to clean residue. Used a foam brush on sanded grout,. Bad idea; grout ate the brush. Pad? Roller? Used on shower surround so instructions were not clear on when it could be used. Contacted Laticrete Customer Support: wait 24 hours (48 better) before using shower.

This is the only product I've used since remodeling our master bath because the first use proved itself reliable. Seals well and holds back mold. Two coats, wipe down good, and wait a couple days and you're good to go. I do our shower every 2.5 to 3 years. It's an easy brush on task so why wait and push the manufacturers recommendation of 4 to 5 years. It may last that long but I don't wait to find out.

Fairly expensive, but works well and does not discolour grout or stone.

Did a test trial and sheds water immediately. No color change to grout and no smell when you apply it.

I have just applied this so I can't say how well it will protect the grout until a few months down the line. However, there is minimal odor and it goes on easily and absorbs well. If the sealer gets on the tile, it's easy to remove with a wet, white cloth. I don't see anything I like so far. Easy to apply with a craft paintbrush -- about grout-line width -- which I just purchased at the local hardware store.