The Best Grout Sealer – Complete Buying Guide & Reviews


When it comes to essentials, properly sealing your grout is the difference between a job well done and a disaster. Choosing the best grout sealer needs to be a priority. Aside from distinguishing color and effectiveness, everything else should be pretty straight forward - does it work or does it not?  

However, with the array of products available on the market, things can get a little overwhelming and the possibility of choosing a less than adequate product is omnipresent. 

In this quick guide, we will attempt to narrow down a few of the top choices on the market for you and, ultimately, our number one choice for the best grout sealer. 

Quick Overview: Our Best ​Grout Sealer Choices

Last update on 2019-04-20 / Affiliate links / Images from Amazon Product Advertising API

​Tuff Duck Granite Grout and Marble Sealer

Tuff Duck Granite, Grout and Marble Sealer 22 oz Stone Tile
  • Maximum protection for Granite, Grout, Marble, Travertine, Limestone, Slate, and even Concrete!
  • Penetrating sealer will not affect the natural appearance of your delicate stones like Quartz
  • Twice the active ingredient as StoneTech to ensure proper protection with a single coat

Last update on 2019-04-19 / Affiliate links / Images from Amazon Product Advertising API

Tuff Duck makes some fantastic tools and the Tuff Duck Sealer continues to prove the authenticity and efficiency of their brand.

This non-acidic sealer works well on both grout and stone and provides a protective cover that’s impervious to both water and oil-based stains.In addition, the non-acidity of this compound allows it to be used on marble too.

There’s just one oddity about it though, for a penetrating sealant the Tuff Duck lacks longevity. This means that you might have to part with a couple more bucks for maintenance than most other sealants available out there.

Things We Like:

  • A single quart covers about 800 square feet.
  • It's fairly easy to use.
  • It is specially formulated to protect against water and oil-based stains.
  • It is compatible with limestone, marble, sandstone, granite, travertine, terrazzo, slate and other porous stone surfaces.

Things We Don't Like:

  • You have to reapply periodically.

​Aqua Mix Grout Sealer

Aqua Mix Grout Sealer Dual Protection - Penetrates and Coats Pint 16oz
  • Aqua Mix Grout Sealer is a water-based sealer that resists common contaminants
  • Repels oil-based and acid-based contaminants, and inhibits mildew and bacteria
  • Formula lasts up to 5 years and outperforms silicone sealers

Last update on 2019-04-19 / Affiliate links / Images from Amazon Product Advertising API

Although the Aqua Mix may not look like much at first, it is the perfect grout sealer if you’re looking to do a wide array of applications.  Apart from being a renowned brand that has introduced multiple product lines, it doubles up as an interior application and exterior application making it a great all-around product for just about anywhere you've laid your favorite tile within the home.

Aqua also seems to have given a lot of thought to effectiveness and cost-effectiveness when coming up with the grout sealer to make it all the more appealing to customers.

Things We Like:

  • The formula can last up to 5 years.
  • It makes a great routine cleaner against grease, food stains, oil and more.
  • It’s easy to apply.
  • It doesn’t change the grout color.

Things We Don't Like:

  • Definitely a bit pricey for what you get.

​StoneTech Grout Sealer (.946L)

StoneTech Heavy Duty Grout Sealer, 1-Quart (.946L)
  • Provides heavy duty, natural look protection for grout on ceramic and porcelain tile.
  • Advanced, water-based fluorochemicals to protect against tough oil & water-based stains.
  • Grout will be easier to clean and stay clean longer.

Last update on 2019-04-19 / Affiliate links / Images from Amazon Product Advertising API

Apart from being a historically reliable brand, the Stonetech grout sealer is one of the few grout sealers that actually removes stains well. It is one of the toughest sealants that you'll find out there and at quite a low cost too. Which is a plus? However, it takes quite a bit of work to lay down since you have to do about three to four liberal coats.

Things We Like:

  • It stays clean longer.
  • It includes advanced water based fluorochemicals that protect against oil and water-based stains.
  • It can be used both indoors and outdoors.
  • It’s quite easy to use.
  • A single quart covers about 150 to 250 square feet.

Things We Don't Like:

  • Some customers complained that the sealant darkened the hue of their grout.

​Black Diamond Ultimate Grout Sealer

Black Diamond Stoneworks Ultimate Grout Sealer Seals Out Stains Use On all Grout Types For Tile, Marble, Floors, Showers, Countertops. Pint
  • LONG LASTING Protection- Easy to Apply, just flip up top and apply to grout lines
  • WATER-BASED LOW ODOR - Safe for white and colored grout
  • PROTECTS AGAINST STAINING from oil, coffee, food, wine and dirt

Last update on 2019-04-19 / Affiliate links / Images from Amazon Product Advertising API

The Black Diamond UGS is a one of a kind sealer made with premium quality materials with the ability to resist stains.

Things We Like:

  • It’s easy to use.
  • It inhibits the growth of mildew and mold.
  • It provides a long-lasting barrier against stains.
  • It covers an area of about 200 to 500 square feet per pint.

Things We Don't Like:

We didn't have any complaints about this particular product.

​Miracle Sealants GRT SLR 6-Ounce Grout Sealer

Miracle Sealants GRT SLR 6-Ounce Grout Sealer, 6-Ounce
  • Convenient applicator bottle included; applicator tip
  • Weather resistant
  • Interior and exterior use

Last update on 2019-04-19 / Affiliate links / Images from Amazon Product Advertising API

Talk about a grout sealer on a budget…

With the Miracle Sealants GRT SLR 6-Ounce Grout Sealer, you pay a whole lot less for a lot more value. It is highly recommended across the board by both novice DIYers and contractors alike and is able to handle just about anything. In addition, it dries off completely leaving a smooth surface that you can feel.

Make no mistake though;the changed texture is not really everyone’s cup of tea. Not to mention the fact that it’s oil-basedmeans that you might just have to grab a bottle of mineral spirits to clean up the excess when you’re done to avoid any problems that may arise due to overly applying.

Things We Like:

  • It is weather resistant.
  • It comes with a convenient applicator bottle and applicator tip.
  • It's safe and easy to use.
  • It can be used both indoors and outdoors.
  • Each 6-ounce bottle provides coverage of about 60 to 115 square feet.

Things We Don't Like:

  • You’ll need to apply about two coats for good water repelling.
  • It can be a bit messy.
  • Some customers complained that it flowed everywhere and changed the color of the grout to a much darker hue when it ran and dried.

Features to Consider


While I cannot vouch for all grout sealers, all factors considered, we have handpicked some of the most effective products there are out there. All you have to do is pay close attention to efficiency in sealing the grout and other surfaces.

Making sure your grout sealer actually gets the job done is essential, without any added mess or unnecessary clean up. Otherwise, it's a big waste of money.

Also knowing how to properly use a grout sealer beforehand will aide in your buying process.


Before buying a grout sealer, you have to ensure that it has other functions other than just merely being a grout sealer. Of course, the number one priority is ensuring that it’s an effective grout sealer, but since you’re going to churn out money for it, you should make sure it's multi-purpose or, at the very least, can get the job at hand done.


When it comes to grout sealers, you no doubt want it to serve you for about 3-5 years at the very least. Anything less and you're just wasting effort and money on cheap grout sealers that can barely stand the test of time when it boils down to it.

Regular reapplying over this time frame is fine, but if your grout sealer is proving to be less than adequate for a 3-5 year hold, you're not getting your money's worth and putting yourself through more work than is required.


It's important to consider what you're going to be using the grout sealer to determine the best kind for you. Most of the time you need it for sealing tiles, but the kinds of tiles, the material of the tiles, and the size of them all play a factor in the brand you should eventually be choosing. 


If you're working on sealing tiles in a shower, bathroom, or any area that may be exposed to water regularly, you're going to want to look at types of grout sealer that are waterproof.

There are certain models that are better than others at this, so in your research and in this article, be sure to take that into consideration if you're resealing shower tiles or any other water-intensive surface.

Wrap Up

So, aside from knowing proper application techniques and the project you need the grout sealer for, paying attention to quality and ease of use is essential when picking out the best grout sealer for you. Make sure it's something that is not only going to properly seal, but continue to seal for a long period of time to avoid repeat jobs.

Our number one choice for grout sealers is the Tuff Duck Granite, Grout, and Marble sealer. It's multi-use application and effectiveness on a variety of surfaces make it our top pick. If you are interested, you can check that out right here.

Note: this article may contain affiliate links. If you make a purchase using one of these links, I may be paid a referral fee at no expense to you.