Best Grout Sealer – Complete Review 2021

If you have laid tiles in your shower then it is important to use the grout sealer on top of your existing grout line.

Indeed, the grout sealer will prevent your grout from degrading over time and help keep it look clean whether it is one-day or 10 years from now.

Additionally, the grout sealer makes your existing grout fully waterproof as well as more durable. But which type of grout sealer to choose?

If you are fresh on the market for the best grout sealer, we have handpicked a few good sealers that are particularly intended for use in showers. Let’s see which one you need to purchase right now!

7 Best Grout Sealers Review

1. Miracles Sealants 511 Impregnator – Best Overall Grout Sealer

The Miracles Sealants 511 is a popular grout sealer used in many homes. This product uses a special formula where the sealer penetrates deep into the grout and provides a long-lasting protection. In fact, the manufacturer claims that this grout sealer is able to protect the grout for up to 20 years.

Moreover, this product is food safe so it is not toxic and children can safely play in the shower without the risk of contamination.

In addition, this grout sealer has excellent coverage as 1 gallon will easily cover 1,000 to 4,000 square feet. The container is also very easy to handle due to its ergonomic design.

Best, you can use this grout sealer on a wide range of surfaces, ranging from quartz to natural stone.

All in all, this grout sealer is definitely the best grout sealer for the shower as it is long-lasting, has a big coverage, as well as will make your grout fully waterproof. You can also check the Best Grout Removal Tool that are trending now.

The only issue we have with this sealer is that it is a little bit pricey. The price could definitely have been a little bit better.

Notes: Since this grout sealer dries very quickly, you need to be careful during application as it will be extremely difficult to remove on the tile surface.

Pros:

• Very durable. Able to last up to 20 years
• Flexible. Can be used in a wide range of surfaces from natural stone to quartz, in addition to grout
• Excellent coverage. One gallon can cover 1,000 to 4,000 square feet
• Food safe. Can be used around pets and children

Cons:

• The price of this grout sealer could have been a little bit more competitive
• Very difficult to remove if it dries on the tile during application. Needs regular cleaning

2. Rocklinite Labs Tuff Duck – Flexible and Easy to Us

The Tuff Duck is a flexible and easy to use grout sealer that can be purchased either as a 22 oz spray bottle or as a gallon. If you choose to go with a gallon, this product will give you 3,200 square feet per gallon coverage which is excellent.

Moreover, the spray bottle is extremely easy to use and if you have never used a grout sealer before, or if you need a small amount of sealer for a small surface area, then this is the model to get. You can safely store this sealer for future use.

In addition, the formula used in this grout sealer will penetrate deep into the grout for protection.

A few caveats we have with this grout sealer is that it does not work well with colored grout as it has the tendency to discolor the grout line. Additionally, if you use this grout sealer outdoors then you will only get 3 years of protection. It could have been longer.

However, if you have a grout that is light in color and needs protection, then this product is one of the best bathroom grout sealers that you can buy.

Notes: It is recommended to apply this grout sealer in a well-ventilated room as it has a bad odor that will last for a few hours until it cures

Pros:

• Flexible. Available as both a gallon or a spray bottle
  The spray bottle is very easy to use
• This sealer bottle can safely be stored for future use
• Uses a non-acid formula. Will not damage your tile

Cons:

• Does not work well on dark or deep colored grout

Only 3 years of protection if used outdoors

3. Aqua Mix Sealer’s Choice Gold – Perfectly Food Safe

This Aqua Mix product is a top-rated grout sealer used by both amateur and professionals for sealing shower grout. One of the good things about this product is that it is food safe so it can technically be used anywhere, even in places like the kitchen.

In addition, it uses a water-based formula that sinks deep into the grout and will not discolor it. This is a big problem with acidic formulas that tend to discolor the grout. Moreover, this sealer cures very rapidly in less than 48 hours with a clean and natural look.

If you’re looking for a grout sealer that cues very rapidly, then this is an excellent choice.

The only issue we have with this sealer is that you may require multiple coats to get the desired protection. This is because it is quite thin.

Notes: This grout sealer can leave a haze if you do not clean the surface regularly. We recommend you keep a sponge and water handy to clean the surface every minute or so to prevent the sealer from curing on the surface.

Pros:

• Fully food safe. Can be used anywhere, including the kitchen
• Cures rapidly in less than 48 hours
• Water-based formula. Does not damage or discolor the grout

Cons:

This sealer is thin. You may need multiple coats to get a decent finish

4. StoneTech Heavy Duty Grout Sealer – Protects Against Stains

The StoneTech is one of the most versatile and top-rated grout sealers for shower. Indeed, this sealer will protect your grout line against any oil or water-based stains. This will ensure that you get a cleaner tile for a longer period of time.

Furthermore, you can purchase this model in multiple sizes to suit your need. Clearly, this grout sealer focuses on quality rather than quantity.

Indeed, even if it is a little bit more expensive when compared to the competition, the finish of this grout sealer is simply superb. It can be used on a wide range of surfaces, from quartz to granite.

Additionally, the water-based formula used in this grout sealer offers excellent resistance not only to water but also to oil stains as well.

The only caveat is that despite being one of the best bathroom grout sealers on the market, it does not have a large coverage when compared to other models.

It is limited to only 1,000 square feet coverage. Therefore, this grout sealer is intended for those who have a small bathroom and do not need a big quantity of grout sealer.

Notes: This grout sealer is superior when compared to other sealers and you should apply this sealer generously so as to get a shiny and mirror-like finish.

Pros:

• Protects the grout line against water and oil-based stains
• Cures with an excellent finish
• Flexible. Available in different sizes to fit your need
• Water-based formula. Does not damage the grout or surface during application

Cons:

Weak coverage. Able to cover only 1,000 square feet per gallon

5. Aqua Mix Grout

This Aqua Mix product is another top-rated grout sealer that has up to 5 years durability. It uses a water-based formula that will repel any mildew formation as well as kill bacteria.

Also, it will repel any water-based as well as oil based contaminants so it is a great 2-in-1 sealer. You definitely get a lot of value for your money with this sealer.

But one of the best things is that you do not have to use many coatings to get a decent effect.

Since the sealer is quite thick, especially when compared to the competition, you do not have to use much. Moreover, it dries a relatively fast and should cure completely in 24 hours or less.

The only caveats we have is that it does not have a big coverage like others showcased in this grout sealer for shower review. Also, the bottle may leak easily if the cap is not closed properly.

However, with its 400 to 1,200 square feet coverage, it is still pretty decent and more than enough for most people. Especially those who need to seal a small bathroom.

Pros:

• Excellent resistance to oil-based as well as water-based contaminants
• Easy to apply by beginners
• Thicker when compared to the competition. Does not need multiple coats

Cons:

• Weak coverage

The bottle may leak easily

6. Stella Sealants Ultra Dry 70 – Affordable and Good Valu

The Stella Sealants is sold in different sizes to suit your need and purpose. The 16 oz spray bottle is by far the easiest to use and also the most affordable of all the offerings in this review.

But for more convenience, you also have the possibility to purchase this sealer in larger quantities, up to 5 gallons if you require that much.

Additionally, this is a water-based grout sealer that is perfectly food safe. You can safely use this sealer around pets and children, no problem. It will also provide your grout line with a shiny and durable layer of protection that will last for years.

And since this water-based formula is quite thin, you will need at least 2 coats to get a good protection. Curing time is also quite small at 24 hours which is excellent.

All in all, if you’re looking for a flexible and yet simple to use grout sealer and grout cleaner, the Stella Sealants is one of the best grout sealers for shower that you can currently buy.

Notes: When freshly applying the sealer, you need to keep children and pets away as it is toxic. However, once it cures it becomes perfectly safe.

Pros:

• Affordable and value for money
• Flexible. Available in different sizes to suit your need
• Fast curing time of 24 hours or less
• Excellent coverage of 3,000 square feet per gallon

Cons:

This grout sealer is toxic before it cures

7. Eliminate Grout – Does Not Emit Bad Odors

This grout sealer is another extremely easy to use the product. It comes in a spray bottle and does not emit any bad odors that you normally get with other tire sealers.

Another good thing about this grout sealer is definitely its ability to block mold and mildew formation.

Further, due to the formula used, it can also be used to remove existing mildew formations as well so it’s a good grout cleaner too.

In addition, once this product cures, it will also protect your grout line and surface with a durable and long-lasting transparent layer.

All in all, this product is one of the best grout sealers for shower if you need a small amount of grout sealer for a small bathroom.

The only problem we have with it is that you get only 25 oz of sealer. This is not a lot and only intended for sealing small surfaces.

Notes: This grout sealer is versatile and can also be used to remove mildew and mold from tile surfaces. In addition, it will also further provide further protection for those surfaces.

Pros:

• Does not contain any bad odors or smell
• Comes as a spray bottle. Very easy to use
• Provides long-lasting protection against mildew and mold formation

Cons:

Contains only 25 oz of grout sealer

How to Buy the Best Grout Sealer for Shower

If you want to find the best grout sealer for the money, here are some important factors to look for.

1. Surface

Both the surface as well as the surface area is important when purchasing the grout sealer. If you have to apply sealer to a larger surface area, then it is recommended to go with a gallon size grout sealer.

The manufacturer should be able to tell how much surface their product is able to cover. A typical grout sealer should be able to cover anywhere from 1000 square feet to 4000 square feet per gallon.

2. Penetrating or Non-penetrating Grout Sealer

Basically, there are 2 types of grout sealer on the market. Penetrating and non-penetrating.

Penetrating Grout Sealer: As its name suggests, the penetrating grout sealer penetrates deep into pores of the grout line as it mixes with the grout.

This type of grout sealer is very effective in combating mold and will help keep your tiles look clean and brand-new for years. Moreover, the lifetime of the penetrating grout sealer is estimated to be anywhere from 10 years to 15 years.

Non-penetrating Grout Sealer: On the other hand, the non-penetrating grout sealer works pretty much the same way as paint. It is a layer of transparent sealer that solidifies on top of the existing grout in the grout line.

One of the best advantages of the non-penetrating sealer is its long lifetime, much longer than the penetrating grout sealer. Indeed, this type of grout sealer is extremely durable and long-lasting.

However, the major caveat of the non-penetrating ground sealer is that it is very hard to remove.

3. Oil or Water Resistant

In addition to being penetrating and non-penetrating, the grout sealer is also either oil resistant or water resistant.

It is quite rare to get the grout sealer that is both oil and water resistant at the same time. Your choice between oil and water resistance will depend on your application.

For showers, the waters resistant ground sealer is the preferred type because you need your grout line to be fully water resistant.

On the other hand, if you’re looking for a general-purpose grout sealer then you can safely go with an oil-based ground sealer.

4. Effectiveness

One of the most important aspects of the grout sealer is effectiveness. Indeed, you want your ground sealer to perform its task of protecting the grout line as well as preventing the formation of mildew and mold.

Not all grout sealers are created equal and some are superior to others. In our grout sealer for shower review above, we have handpicked a few highly effective sealers that are worth the investment.

5. Longevity

Moreover, you need your grout sealer to be long-lasting and durable. In most cases, a grout sealer should last you at least 3 years if you choose to go with a penetrating ground sealer.

If you need a longer lasting sealer, that it is recommended to go with a non-penetrating ground sealer because this type of sealer has been proven to last longer than 15 years.

As a matter of fact, sealers like the Miracles Sealants 511 Impregnator are champions of longevity because this sealer will provide your grout line no less than 20 years of protection.

6. Grout Color

Some grout sealers have a color added to them for aesthetic look. If you want to change the color of your grout line, this is an excellent type of grout sealer to buy.

On the other hand, if your grout is already colored and you just want to make the colors pop, you can go with a transparent grout sealer that will give the grout line a wet and attractive look.

7. Food Safe

For your safety, as well as the safety of others, especially small children, it is important to ensure that the grout sealer is food safe.

A food safe grout sealer will also not cause irritation to the skin, especially when it comes in contact with water.

How to Apply a Grout Sealer for Shower

Applying the grout sealer is extremely easy. Here is a stepwise manner on how to proceed with the job.

Step 1: Clean the Tiles

First and foremost, you need to ensure that the tiles, as well as the grout lines, are clean. This would allow for a better adhesion and a faster curing time of the grout sealer.

You can clean the tiles with a wet sponge or by gently brushing with a brush and water. Additionally, go through each grout line with a wet cloth so that it is free of dust and debris.

While you do so, make sure that the room is well ventilated so that the grout sealer can cure faster and more naturally.

Step 2: Apply the Grout Sealer to the Grout

If you are using a grout applicator with a bottle and roller top, then fill up the bottle with the grout sealer.

Afterward, roll the applicator wheels on the grout line in such a way that it fills each grout line with the sealer. Keep doing so until you have filled all the grout lines.

Step 3: Clean the Tile Again

Once you have applied the grout sealer, your ceramic tiles should be dirty and covered with the haze which is a typical effect of the grout sealer that has started to evaporate and cure.

You will need to clean it as quickly as possible so as to prevent the grout sealer from drying on the tile which will then be very difficult to remove.

Again, you can use a wet sponge or a wet cloth to clean the tiles. Avoid using too much water in this step as it may erode the grout sealer from the grout line.

Step 4: Allow It to Cure

Allow the grout sealer to cure. The sealer manufacturer should mention the amount of time it takes for their sealer to cure.

Once it has cured, it should be as solid as cement. Use a dry paper towel to buff your ceramic tile surface again and remove any haze that remains.

Buyer’s Guide

Not all grout sealers are made equally — some do better at fast-curing, while others are longer-lasting. Certain people may prefer to have a non-toxic version that is eco-friendlier. In this buyer’s guide, we will discuss the different options, what makes a good grout sealer, and how you can choose the one that will best fit your needs and your budget.

Type of Surface

First, know what type of surface you are dealing with. You need to know if your grout is sanded or unsanded.

Cement-based sanded grout: This type is porous and is made from a mixture of water, cement, and sand. It is more susceptible to water and grease damage and can be negatively affected by dirt and mold. It is the most common grout and the least expensive.

Epoxy-based unsanded grout: This grout is strong and durable, made from epoxy resins that are combined with filler powders. It is also more expensive and has a plastic appearance. It is non-porous, cleans easily, and is almost stain proof. These won’t need to be sealed.

Types of Sealers

Non-penetrating sealer

This is a surface coat that will protect your floors and backsplashes from water exposure, grease, and dirt. These are best for areas that aren’t exposed to high amounts of water, such as the kitchen. It will need to be applied every one to two years and works best on grout within natural stone and unglazed tiles.

Impregnating sealer

These are long-term sealers that seep into the grout, providing protection for at least three to five years. They work best for natural stone, ceramic, and porcelain, since it leaves your tile natural looking. They are the ideal choice for bathrooms, showers, and tubs.

Considerations

Amount: Make sure you buy enough product to cover the area you want to seal. Determine the square footage and purchase enough sealer to coat it all. Most sealers will give you general guidelines as to how much it will cover. Keep in mind that you will want to apply at least two coats of sealer.

Application: The best way to apply a sealer to grout is with a sponge or a brush for precision work. Certain products will come in a spray bottle, which can be applied over your tile surfaces as well. You will spend less time cleaning your tile if you use a sponge or brush. On the other hand, the spray is easy to apply in one shot, and then you wipe off the residue as you go.

Toxicity: Solvent-based sealers will contain the most chemicals and it is recommended to wear gloves and a safety mask when using this type of sealer. Water-based sealers are a safer alternative, having lower VOC levels. Products that say non-toxic or formaldehyde-free have the least harmful side effects.

Cost: The average cost can range from $0.80 to over $1.50 per square foot, but there are handy online cost calculators available that will help with determining the price. Think of it as an investment and a timesaver. It will help your grout stay beautiful and save you from having to clean it so often.

Tips and Tricks

Wait at least 48-72 hours to seal new grout, to allow it to cure and dry. It is best to seal your grout within the first two to three weeks of installation. If you have recently used the shower or tub, allow the grout 12 to 24 hours of dry time.
For existing grout, clean well before applying the sealer. There are special grout cleaning solutions, but you will want to scrub the grout to remove all dirt and mold. Then wait until the grout has dried before applying the sealer.
You can mask off any surfaces you do not want the sealer to touch, such as any wooden or metal finishes.
Provide adequate ventilation in the room where you are sealing: Open the windows and turn on the fans. This will remove the odor, as well as help the sealer dry faster.

Conclusion

Spending extra time and money on a high-quality, long-lasting sealer will save you in the long run. It will also protect your tile from stains and moisture, allowing it to retain its natural beauty for many years.

Our reviews list highlighted 10 best grout sealers, with the top choice being the Aqua-X since it is easy to apply, has a low odor, and offers great coverage. For the best value, the Miracle Sealant is an impregnator that will provide durable protection for many years, at an affordable price. The premium sealer is the StoneTech, offering five years of protection on cement-based grout and natural stone tiles.

We hope that our reviews list helped you sort through the many sealers available to narrow it down to one that fits your budget and the type of tile and grout in your home. It is easy to apply your own sealer and is a great investment in improving the life of your grout.