Customer Reviews for Custom Building Products StainBlocker 12 oz. Stain Resisting Admixture Additive for Grout

Bought on advice of Home Depot sales guy but wouldn't buy again. Its easy enough to mix but I feel like you still need to apply a sealer which probably accomplishes the same thing. Its pretty expensive for the limited benefit.

Awesome product .Used with non sanded ployblend grout.Easy to mix and perfect outcome .Highly recommended .

We use this every time we buy dry grout. helps to strengthen the grout and clean up easier.

Rating provided by a verified purchaser

The image on the bottle gives the impression that StainBlocker for Grout helps repel water, which in turn would help prevent stains. This product just helps make your grout stronger and impervious to dirt.It also leaves light and dark patches in the grout

Not sure yet just installed it . Ok

Ok, maybe there’s an application for this somewhere, but this doesn’t do anything a sealer wouldn’t do. As people have mentioned, it’s not a sealer, so you have to seal it afterwards anyway. It only blocks stains (so the reviews say) and so does a sealer. So the only time this would be of any use is if you physically cannot seal the grout after installation. Almost any time you want tile and grout will be in a moisture rich or stain rich environment so a sealer is basically a must. I only mixed it in one batch of grout and it was a total nightmare to apply and clean. I’m not saying that was the fault of this product... but I’m not saying it’s not... I don’t plan to use the rest of the bottle on my other jobs and I certainly do not plan on ever buying it again!

Great product and works well. Our contractor uses it on his jobs when appropriate.

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Left white spots in the grout

Blends in great with the grout. I feel the amount of water to additive recommended leaves the grout way too dry. Had to add a bit more water.

Rating provided by a verified purchaser

Rating provided by a verified purchaser

Rating provided by a verified purchaser

Does NOT repeal water as specified, and as shown on the cover of the bottle!!

Great Direction and easy to use

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So far it looks like its working just as the product promises.

I was recommended this product by the flooring department. Yes it was perfect, easy to use. I would purchase the above again, next time I put down a new tile floor! Thank you Home Depot. UTC. Sarasota/Bradenton. You are Gold.

Grout comes up

Hard to use. Once mixed in with grout, it has specks of color in it and whenever you wiped, the color specks streaked. Had to wipe a lot.

Rating provided by a verified purchaser

Rating provided by a verified purchaser

I use this Every time I grout floors and Walls. Very good ad-mix product.