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Custom Building Products StainBlocker 32 oz. Additive for Grout
0010186800066

Custom Building Products

StainBlocker 32 oz. Additive for Grout

$19.97 /each

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Product Overview

StainBlocker for Grout is a sealing and performance enhancing additive to be used when mixing grout and water. Unlike traditional sealers which are applied to grout after it has dried for 2-3 days, StainBlocker for Grout is added directly to the grout mix during installation, to immediately repel dirt and make clean-up easier after the grout is dry. StainBlocker for Grout will not affect grout color.

  • Use with 25 lb. polyblend grout
  • Add when mixing grout and water
  • Immediately resists dirt, oil and stains
  • Low odor, low VOC, pH neutral

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Customer Questions & Answers

7 Questions20 Answers

Customer Questions & Answers

StainBlocker 32 oz. Additive for Grout
StainBlocker 32 oz. Additive for Grout

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8 answers

Is this made for non sanded or sanded grout?

This question is from StainBlocker 32 oz. Additive for Grout
Asked by
minnesota
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January 12, 2014
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Answers (8)

Asked by
North Carolina
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Home Improvement Profile: DIYer
May 18, 2016
Answer: 
This sealer will work on either. I just re-grouted my bathroom using both sanded and non-sanded grout. On both, I used this stainblocker without any issues whatsoever...Just follow the directions on the bottle and you won't have any issues either.
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Asked by
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Home Improvement Profile: DIYer
June 16, 2015
Answer: 
Both types but only cement based grouts. Manufacturer website has the datasheet TDS-134 dated 2/2015 that indicates a different mix ratio for their unsanded grout vs sanded than specified on the product bottle. Double check with manufacturer. There have been quite a number of mixed messages about this product so be sure to check out the website for precautions - especially if you are grouting any porous Read More
Both types but only cement based grouts. Manufacturer website has the datasheet TDS-134 dated 2/2015 that indicates a different mix ratio for their unsanded grout vs sanded than specified on the product bottle. Double check with manufacturer. There have been quite a number of mixed messages about this product so be sure to check out the website for precautions - especially if you are grouting any porous material such as natural stone. Read Less
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Asked by
Tulsa Ok
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Home Improvement Profile: Other
March 27, 2015
Answer: 
don't know
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Asked by
Ranson, WV
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March 5, 2015
Answer: 
Both.
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Asked by
Georgetown,Texas
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Home Improvement Profile: DIYer
February 25, 2015
Answer: 
non sanded
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Asked by
Ozark, AR
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Home Improvement Profile: DIYer
August 26, 2014
Answer: 
We used it with sanded. Not sure about the other.
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Asked by
Anonymous
July 27, 2014
Answer: 
According to the manufacturer, it can be added to BOTH sanded and non-sanded "Portland cement based grouts" (such as Custom Building Products Polyblend Grout). It's important to note that it is intended to replace a portion of the water when mixing the grout for initial application. It should not be used as a grout sealer after the grout has already been applied.
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Asked by
Technical Service Dept. Corp office
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January 13, 2014
Answer: 
Yes, the Stainblocker can be used for sanded and non-sanded grout. For more information, please contact our technical department at (800) 278-2311.
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3 answers

Can this be use on slate

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May 16, 2016
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Answers (3)

May 18, 2016
Answer: 
StainBlocker Additive for Grout is an additive for Polyblend Sanded and Non-Sanded Grout. For further assistance please contact our Care and Maintenance division at 800.272.8786 option 3
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Asked by
North Carolina
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Home Improvement Profile: DIYer
May 18, 2016
Answer: 
This can be used on any type tile you install, as this sealer is for the grout.
You add this sealer to the grout as you're mixing it, in place of the water.
The mixing directions on the bottle explain what proportions to use.
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May 17, 2016
Answer: 
Yes, the additive can be used on slate.
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3 answers

how long does stainblocker for grout by custom building products last as far a sealer

This question is from StainBlocker 32 oz. Additive for Grout
Asked by
bubba
December 8, 2011
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Asked by
Anonymous
July 27, 2014
Answer: 
It has a 1 year manufacturer warranty, but I haven't found any actual homeowner info on how long one can expect it to last beyond the warranty period. Undoubtedly, it will depend on whether or not it's used in a stain-prone area (like a tile countertop or floor). I haven't had mine long enough to say for sure, but I can say that it's well worth the minimal extra cost to add this stain blocker to the Read More
It has a 1 year manufacturer warranty, but I haven't found any actual homeowner info on how long one can expect it to last beyond the warranty period. Undoubtedly, it will depend on whether or not it's used in a stain-prone area (like a tile countertop or floor). I haven't had mine long enough to say for sure, but I can say that it's well worth the minimal extra cost to add this stain blocker to the grout mixture during the initial application. Read Less
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Asked by
Silver Spring, MD
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April 10, 2013
Answer: 
It is three years later and mine is still holding on very light colored grout on an outdoor patio. I haven't poured a bottle of Ketchup right on it though. My lines are 1/4 inch.
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Asked by
Technical Service Dept. Corp office
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December 12, 2011
Answer: 
Test the grout once a year. Sprinkle a drop of water on to the grout, if droplet of water penetrates immediately then apply one more coat of sealer. If droplet of water beads for a few minutes then there is not need for extra sealer yet.
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2 answers

Stain Blocker Update

This question is from StainBlocker 32 oz. Additive for Grout
Asked by
Sicklerville, NJ
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September 8, 2015
You state in your reply that the Stain Blocker is a sealer designed to repeal dirt and make cleaning easier and will not make the grout waterproof or stain proof. Well my question is, why is it called stain blocker and depicted on your container label water beading in the grout lines.
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Asked by
North Carolina
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Home Improvement Profile: DIYer
May 18, 2016
Answer: 
Unfortunately, the answer given to you is not completely accurate.
This product is a stainblocker/sealer. It does make cleanup easer by preventing dirt, etc. from working it's way into the grout.
This product also does prevent stains in the same way I just mentioned.
As far as water beading up on the tile, this product won't do that completely. It will provide some degree of water repelling
Read More
Unfortunately, the answer given to you is not completely accurate.
This product is a stainblocker/sealer. It does make cleanup easer by preventing dirt, etc. from working it's way into the grout.
This product also does prevent stains in the same way I just mentioned.
As far as water beading up on the tile, this product won't do that completely. It will provide some degree of water repelling qualities, but only on the grout which is where this product is mixed into.
The degree of stain and water resistance is in direct relation to the ratio you mix this with the grout.
The included directions on the bottle further explain this.
Read Less
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September 9, 2015
Answer: 
The sealer is called Stain Blocker because it blocks water penetration for a few minutes so that a spill can be wiped off to prevent a stain however; if the spill is not wiped off soon enough, it can penetrate into the grout making a stain.
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Customer Reviews

StainBlocker 32 oz. Additive for Grout is rated 3.3 out of 5 by 34.
Rated 5 out of 5 by from Best grout sealer I've used!!! I remodeled a bathroom in 2015 and utilized this grout sealer. I added it to the grout as I mixed prior to floating into joints. A year later, no mold or so much as an imperfection in my tile grout!!! Superior protection against water intrusion and mold/mildew on grout! Would definitely purchase again! Easier than spraying or brushing on a grout sealer after the grout is installed.
Date published: 2017-01-07
Rated 2 out of 5 by from Read the fine print! NOT A SEALER! Long story short. Purchased this product along with poly blend non sanded grout for tub enclosure. Looks good and yes grout seems strong (but it's new) and pretty. The problem is! This is not a waterproof sealer or actually any kind of sealant. It's a stain blocker ONLY. So if you want sealer look elsewhere. To me this is unnecessary step. You seal the grout to keep out stains and make waterproof. I was under the impression this was a full sealer and blocker. The only reason I see to have this is if you don't seal. But why would you not seal and moisture proof your grout anywhere you use it?!?
Date published: 2016-05-05
Rated 1 out of 5 by from Worthless Product, does nothing it claims. A licensed Contractors opinion Had no problems with mixing, applying or wiping down the product. Really no difference than standard water mix grout. BUT, the product offers NO benefit what so ever. After curing, the grout absorbs water just as if we had used a water only mix. The label is certainly a falsehood, as water does not shed at all, and quickly absorbs into grout. I could immediately see the grout darken when water was sprayed onto tile. We have used "Procolor Stain Guard admix" for years and it actually works as advertised. It does cost twice as much, but at least it performs. Find a local tile dealer and use a product that works. DO NOT WASTE YOUR MONEY ON STAINBLOCKER! Licensed Contractor in Ga for 30 years.
Date published: 2015-12-19
Rated 5 out of 5 by from easy installation The people with bad reviews of hard to remove grout haze had to have left the excess grout on the surface too long,I tiled an entire shower; walls and floor with ceramic and glass mosaic as well as bathroom floor approx 125 sq. Ft with zero problems outside the usual haze. Mixing this product is also convenient being it's in a 32oz jug you pour it in bucket, the refill with water and dump the powered grout in, no guesswork on how much water or need to bring a measuring cup out to ensure proper mixing. I'd absolutely use this product again; no reason not to. it's like a $19 insurance policy for your expensive tile job.
Date published: 2015-05-31
Rated 4 out of 5 by from Good product- Used all the time on customer installs I am a professional remodeling contractor who specializes in bathroom installation. I have installed thousands of square feet of tile before and after using this product (once it was introduced to the market). Grout haze is an installer error and not the fault of this product. The grout is definitely stronger and more stain resistant when using this product. I have used it in my own shower and it works great. For people who are getting staining, it could be so many issues. No grout additive can prevent all stains. This product is Not desisgned to repel water. Even a sealer that is applied after grouting will not SEAL tile. If you want the least stains, go with an epoxy grout. This is a great product for the price and DOES work.
Date published: 2016-01-03
Rated 5 out of 5 by from Great for outdoor patio I used this product for a tiled 18 x 22 ft outdoor patio and it performs fantastically three years later. I chose a light tan colored porcelain floor tile to repel outdoor heat and a tan grout. Worried that despite being cool, the tiles would end up looking dirty and horrible after a year or two. My tile guy had never used this before but I purchased it and he mixed this in. We used the flexible grout home depot sells cant remember the name to allow for movement in freezing temperatures. He had no problem until the very end of the third day when he rushed to finish cleaning up the grout haze before it rained and did not get up all of the grout haze as he should have. So as might be expected, after that same haze appeared on about a 6 x 9 spot. It looked like grout haze to me. Seen it before and yeah it is hard to clean up no matter what is in the grout. He returned a few days later wiped it down and got it up. Don't know what he used but he didn't seem to have a big problem. At any rate, I would DEFINTELY use this product again with no problem. Some might say that mine was ok because my tiles were light-colored and any haze made no difference. But I was using porcelain which is pretty much impenetrable so I don't think the haze remained on top or seeped in. I should be able to see it and I don't and it has rained and rained over the past few years. So I really like this product. By the way, my tile guy did not seal the grout either. He loved that. If it weren't for the price at the time I would give it five stars . I think it was like $16 for a bottle but I guess it saved me on having to pay him to seal it. I would simply say make sure you get up all the grout. Looks can be deceiving and when grout haze dries yeah that's a problem.
Date published: 2013-04-11
Rated 5 out of 5 by from DIYers biggest tile mistake I wouldn't be surprised if the people that had a major problem with grout haze were using it with a natural stone tile, which HAS to be sealed before grouting. Just a couple coats of a topical sealer will prevent a grout haze on natural stone, i.e. Marble, Travertine, Granite, Slate, etc. Stone tile is naturally absorbent and unlike ceramic or porcelain it is not sealed unless you, the installer, seals it. If the stone is not sealed, the grout haze is horrible, and extremely difficult to remove. This stainblocker is an excellent product and prevents the trouble of having to reseal your grout through the years.
Date published: 2015-03-05
Rated 1 out of 5 by from Results Stain Blocker is not a true stain blocker as stated from the manufactures answer to my questions and non answer to the package photo on the label in my opinion. a waste of 20 bucks
Date published: 2015-09-09
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