The Best Grout Sealers for Shower of 2024


Hey there! I heard you are not a fan of mold, mildew, and other dirty substances that may reside on your shower tiles’ grout. Come closer and let me whisper the solution to you… it’s using the best grout sealer for shower. Simple, right? Well, not entirely, as you have to be careful with the sealer you choose to use!

Showers are delicate places that should be properly taken care of as they are humid areas and get water on them more often than not. Due to the high humidity and the water that ends up on the tiles, it is necessary to seal not only the tiles but the grout in the joint lines as well. But the struggle does not end there; you will need to consider a few factors when choosing a grout sealer for shower, as choosing the wrong type could cause more harm than good. 

To make the grout sealing experience a more pleasant one, I have saved you some time by researching and choosing the best grout sealers for showers. Read on for reviews and more!

  1. Best Overall: Aqua Mix Sealers Choice Gold Rapid Cure
  2. Best Budget: Black Diamond Stoneworks Ultimate Grout Sealer
  3. Best Waterproof: AQUA-X Grout Sealer
  4. Best for Shower Walls: Miracle Sealants GRTSLRAEROCS Aerosol 511
  5. Best for Pebble Floor: Essential Values 5 Gallon Concrete Sealer
  6. Best for Tile and Grout: MP90 Eco Xtreme

Best Grout Sealers for Shower Reviewed

Now that you are aware of the factors you should remember during your hunt for the best grout sealer for shower, it is time for a quick listing of the best products I have found. Below you will find all the details you need:

The Best Grout Sealer for Shower Options: Aqua Mix Sealers Choice Gold Rapid Cure

If you’re looking for the best grout sealer for your shower, I highly recommend the Aqua Mix Sealers Choice Gold Rapid Cure. As someone who has struggled with keeping grout clean and free from mold and mildew, I can confidently say that this sealer has made a significant difference.

One of the biggest pros of the Aqua Mix Sealers Choice Gold Rapid Cure is its fast-curing time. Unlike other sealers that can take days to dry, this one can be fully cured in as little as two hours, making it perfect for busy areas like a shower. Additionally, the sealer provides excellent protection against stains and liquids, keeping the surface clean and safe from potential damage. It is also versatile and can be used on various surfaces, including natural stone and tile, making it a wonderful all-in-one option.

The sealer is also effortless to apply, and I found that a single 473mls (US Pint) bottle was enough to cover all the grout in my shower. The only con I found was the strong odor, which was particularly bothersome in my small bathroom. However, once the sealer had cured, the odor dispersed, and the results were well worth it.

Overall, if you’re looking for a reliable, effective, and fast-drying grout sealer for your shower, the Aqua Mix Sealers Choice Gold Rapid Cure is an excellent choice. Its ease of application, versatility and high-level protection make it a worthwhile investment that will keep your shower looking great for years to come.

Product Specs

  • Application method: Sponge
  • Volume: 1.12 Pounds
  • Type: Liquid


  • Rapid curing time
  • Offers high protection
  • Can be used in different areas and surfaces
  • Easy to apply


  • Bad odor

The Best Grout Sealer for Shower Options:  Black Diamond Stoneworks Ultimate Grout Sealer

The Black Diamond Stoneworks Ultimate Grout Sealer is a budget-friendly solution for homeowners who want to protect their shower grout from moisture and stains. This grout sealer is specifically designed to provide high-level protection against water, soap, and other liquids that can cause damage to your grout over time.

One of the biggest selling points of the Black Diamond Stoneworks Ultimate Grout Sealer is its affordability. This sealer is significantly cheaper than other options on the market, making it an excellent choice for homeowners on a budget. Despite its low price, this sealer does not compromise quality and provides reliable protection for your shower grout. Another pro of this grout sealer is its versatility. It can be used on various surfaces, including ceramic, porcelain, and stone, making it a versatile option for homeowners who want to protect their grout in different areas of their homes.

The Black Diamond Stoneworks Ultimate Grout Sealer offers high-level protection for your shower grout. This sealer creates a protective barrier that repels water, preventing it from setting into your grout and causing damage. This protection helps extend your grout’s life, ensuring it remains clean and looks great for years. One unique benefit of this sealer is that it does not stain new black grout. This is a common issue with some other sealers, but the Black Diamond Stoneworks Ultimate Grout Sealer provides reliable protection without affecting the color of your grout.

The only potential drawback of this sealer is its coverage. It may not provide enough coverage for larger surfaces or multiple applications, which can add to the overall cost. Despite this, the Black Diamond Stoneworks Ultimate Grout Sealer is an excellent budget-friendly option for protecting your shower grout.

Product Specs

  • Application method: Spray-on product
  • Volume: 16 Fluid Ounces
  • Type: Spray-on


  • Affordability
  • Versatility
  • High-level protection
  • Does not discolor black grout


  • Low coverage

Best Waterproof
The Best Grout Sealer for Shower Options: AQUA-X Grout Sealer

If you need a high-quality waterproof grout sealer for your shower, look no further than the 1 Qt. AQUA-X Grout Sealer. This premium product provides excellent water resistance and long-lasting protection, making it an excellent investment for anyone looking to keep their grout looking clean and new for years to come. This sealer is quite beneficial due to its exceptional water resistance. 

Whether you’re dealing with a lot of moisture in your shower or just want to protect your grout from stains and spills, this product is up to the task. It creates a strong barrier that prevents water and other liquids from penetrating the surface of the grout.

In addition to its water resistance, the AQUA-X Grout Sealer is also breathable, allowing moisture to escape without compromising its effectiveness. This is an important feature for any grout sealer, as it helps prevent mold and mildew from forming behind the tiles.

Another great thing about this product is that it’s odorless, so you won’t have to worry about any unpleasant smells lingering in your bathroom after you’ve applied it. And once it’s applied, the AQUA-X Grout Sealer is highly durable, providing long-lasting protection against water damage, stains, and bacteria.

The only downside to the AQUA-X Grout Sealer is that it is a bit expensive compared to other grout sealers on the market. However, it is worth the investment if you are looking for a high-quality product that will provide exceptional protection for your grout.

Product Specs

  • Application method: Spray-on product
  • Volume: 1 Quart
  • Type: Spray-on


  • Excellent water resistance
  • Breathable
  • Odorless
  • Durable


  • Expensive

The Best Grout Sealer for Shower Options: Miracle Sealants GRTSLRAEROCS Aerosol 511

The Miracle Sealants GRTSLRAEROCS Aerosol 511 Spray-On Grout Sealer is an excellent choice for sealing the grout on shower walls. This sealer comes in a 15-ounce aerosol can, making it easy to apply and time-saving. It’s a clear sealer that dries quickly and doesn’t leave any residue or discoloration on the grout lines.

One of the significant advantages of this sealer is its strong protection against moisture and stains. It forms a durable and invisible barrier that prevents water from penetrating the grout and causing damage. It also protects against mold, mildew, and other bacteria growth that can develop in damp environments like showers. Another pro of this sealer is its easy-to-use aerosol application. You can spray it directly onto the grout lines without worrying about using a brush or roller. This makes the application process faster and more efficient.

The only downside of this sealer is its limited coverage. One can of this sealer covers up to 200 square feet of grout, which may not be enough for larger shower walls or tiled surfaces. You may need to purchase multiple cans to ensure adequate coverage.

Overall, if you’re looking for a quick and easy way to seal your shower wall grout, the Miracle Sealants GRTSLRAEROCS Aerosol 511 Spray-On Grout Sealer is an excellent option. Its time-saving application, strong protection, and clear finish make it a top choice for any bathroom renovation project.

Product Specs

  • Application method: Spray-on product
  • Volume: 15 Ounce
  • Type: Spray-on


  • Time-saving application
  • Strong protection
  • Dries clear


  • Limited coverage

The Best Grout Sealer for Shower Options: Essential Values 5 Gallon Concrete Sealer

Essential Values 5 Gallon Concrete Sealer is an exceptional grout sealer that provides long-lasting protection for pebble floors. It is a premium-quality sealant designed to protect the grout from water damage, stains, and dirt buildup. The sealant creates a barrier that prevents contaminants from penetrating the surface of the grout, making it easy to clean and maintain over time. One of the most impressive features of this sealer is its high coverage area, allowing it to easily cover large areas. Additionally, it is resistant to UV rays, maintaining its protective qualities even when exposed to direct sunlight.

Although the Essential Values 5 Gallon Concrete Sealer is an excellent product, it does have a minor drawback. It may require more than one coat to achieve the desired level of protection, increasing the time and effort required to apply the sealer.

All in all, Essential Values 5 Gallon Concrete Sealer is a top-of-the-line grout sealer that provides long-lasting protection for pebble floors. Its impressive coverage area and UV resistance make it an excellent choice for anyone looking to protect their grout while maintaining its natural appearance.

Product Specs

  • Application method: Sponge, applicator, etc.
  • Volume: 5 Gallon
  • Type: Liquid


  • Long-lasting protection
  • High coverage area
  • Resistant to UV rays


  • Requires more than one coat

Best for Tile and Grout
The Best Grout Sealer for Shower Options: MP90 Eco Xtreme

MP90 Eco Xtreme is a top-notch protective agent for tiles, grout, and various types of surfaces. This eco-friendly product is known for its exceptional sealing properties and durability. It is a water-based, no-solvent product penetrating the surface, forming an invisible barrier protecting against water, stains, and other contaminants.

One of the standout features of MP90 Eco Xtreme is its long-lasting protection. Once applied, it forms a protective layer for many years, making it a great investment in the long run. Additionally, it is suitable for use on a wide range of surfaces, including stone, marble, quartz, granite, concrete, and polished stoneware. Another major advantage of MP90 Eco Xtreme is its eco-friendliness. It is free from solvents, VOCs, and other harmful chemicals, making it safe for the environment and those using it.

However, one downside to this product is its price. It is more expensive than other grout sealers on the market. Still, given its long-lasting protection and eco-friendliness, it is a worthwhile investment for those prioritizing sustainability and durability. Overall, MP90 Eco Xtreme is an excellent choice for those looking for a high-quality, eco-friendly sealer for their grout and tiles.

Product Specs

  • Application method: Sponge, brush, etc
  • Volume: 0.26 gallons
  • Type: Liquid


  • Long-lasting protection
  • Suitable for a wide range of surfaces
  • Environmentally friendly


  • Expensive

What to Consider When Choosing the Best Grout Sealers for Shower

As mentioned above, to find the best grout sealer for shower, you should evaluate some factors to choose one that suits your needs. You could either assess your situation independently or acquire expert help to understand which grout sealer will work best for you. If you choose to go the first route, there are several factors to take into account, and below, I have explained the importance of each of them:

The Best Grout Sealer for Shower Options

Water Resistance

One of the main reasons we seal grout is to prevent water damage which will later give way to mold and mildew to grow. Hence, first and foremost, you must ensure that the grout sealer you choose will be waterproof and guarantee resistance against any water damage that might ensue. 

A good, waterproof sealer will prevent mold and mildew, which are detrimental to our health and, specifically, our respiratory system. Moreover, such a sealer will not allow water to penetrate the grout, which can then cause cracks in the grout and make the whole tile project look unseemly. This factor is especially important when sealing shower grout, as showers are moist areas that can cause damage quickly.

Application Type

Another factor to consider is the application type. If you are unfamiliar with grout sealers, you should know they come in various shapes, forms, and application types. Some grout sealers are spray-on, others come in tubes, and some come in large containers

. Depending on the “packaging,” you apply them differently. For example, spray-on sealers, as the name suggests, are carefully sprayed in layers on top of the grout. Tube sealers are another easy choice to apply, as you just need to squeeze the product on the grout. Containers, on the other hand, will need an applicator, such as a brush or sponge, to coat the grout. Which product you choose is entirely up to you, so pick a sealer that makes the job easier for you!

The Best Grout Sealer for Shower Options

Types of Grout Sealer

A crucial thing to take into account is the type of sealer you will use. Grout sealers mainly fall under two options: penetrating and non-penetrating sealers. 

Penetrating sealers are regarded as the safest option. If you are wondering what is the best sealer for shower grout, look no further than products of this type. Penetrative grout sealers are so awesome because they will settle into the pores of your grout and form a protective layer from deep inside. They are the best tile and grout sealer for shower options, as the protective coat formed in and on top of the grout will keep water from penetrating the pores, thus, preventing mold and mildew growth. Usually, penetrative grout sealers will last anywhere from 3 to 5 years.

If you think that its benefits stop there, think again! These sealers come in both color and colorless versions. If the grout in your tile installation has suffered from discoloration or is stained from oil or food spillage, I would highly recommend going for a color version, as it will aid in restoring your grout’s color while also protecting it from more damage. Likewise, if you want to change the grout’s color to something else, such options can be handy! However, if you want to maintain the grout’s color, go for a colorless penetrative sealer which will not change its color, but enhance it instead.

Non-penetrative sealers are the second option. Although penetrating grout sealers have many benefits, non-penetrating ones do not fall behind. They offer more basic protection by forming a layer on top of the grout lines; however, if the sealer you choose is waterproof, it will be just as safe as penetrating sealers. I find the coat these sealers create quite a beautiful addition to some of my tile installations as they can make the surface covered glow. 

Unlike the ones above, these sealants must be reapplied every two years maximum. You can do a simple water test to check whether its protective abilities are wearing off. Speaking of water, a non-penetrating sealer is not the best grout sealer for bathroom shower, as it is not as durable as penetrating sealants.

Another thing to bear in mind when it comes to non-penetrating grout sealers is that they do not work well on glazed tiles, which will cause the layer you applied to start to tear away. These sealers are best used with natural stone or unglazed type of tiles. 

Types of Grout

Just like I advised you to keep in mind the sealer types, you should also consider the type of grout used in your tile project, as some grout types do not do well with certain sealer types or do not require sealing at all.

An example of the last option is epoxy grout. If the grout lines in your tile project are filled with epoxy grout, you will not need a sealer, as it is non-porous and highly durable. 

The rule of thumb when choosing the proper sealer for your grout type is knowing if the grout you have used is porous. Less porous grout types can fare well even with non-penetrating grout sealers, as they are more durable and less prone to water damage. Porous grout can easily absorb water; hence, it needs maximum protection, which penetrating sealers could offer.


Many people prefer using solvent-based formulas as they can penetrate the grout more deeply and believe they offer more protection when compared to water-based formulas. Although this choice is mostly up to preference, it is important to note that solvent-based sealers contain harmful chemicals for the environment and humans alike. These sealers contain VOCs (short for volatile organic compounds ) that can release toxic fumes into the air during and after application. 

The inhalation of these fumes can cause respiratory problems, headaches, dizziness, and even nausea. Additionally, the use of solvent-based sealers can have negative effects on the environment. The VOCs in these sealers can contribute to air pollution, and the disposal of leftover sealer and cleaning materials can contaminate soil and waterways.

Fortunately, there are safer alternatives to solvent-based grout sealers. Water-based sealers are another popular choice as they contain fewer VOCs and are generally safer for people and the environment. It is crucial to always read and follow the instructions on the product label, wear protective gear such as gloves and a mask during the application, and properly dispose of any leftover materials.

Treatable Surfaces

Choosing the right grout sealer for the surfaces you will be sealing is crucial for achieving the best results and protecting your surfaces. Firstly, you should consider the location of the surfaces being sealed. High-traffic areas such as hallways and entryways may require a more durable sealer that can withstand wear and tear, while areas prone to moisture, such as bathrooms and kitchens, may require a sealer that is resistant to water damage.

Additionally, some formulas may or may not work with your tile types, so you should look for a sealer that will not damage your tiles through a chemical reaction by eroding them.

If you plan on sealing the grout on kitchen counters or places near food, carefully check the products’ labels to see if they are safe for food contact.


Durability is an essential aspect to consider when choosing a grout sealer for your shower because it determines how long the sealer will provide protection against water damage, mold growth, and stains. Showers are exposed to constant moisture, and the grout is a prime target for water damage, leading to mold growth and weakening the grout’s structural integrity. A durable sealer will create a barrier that can withstand moisture for an extended period, providing long-lasting protection for your grout.

Choosing a durable sealer will save you time and money in the long run by reducing the need for frequent reapplication and preventing costly repairs due to water damage. Additionally, a durable sealer will maintain the appearance of your shower, preventing unsightly stains and discoloration. Therefore, when selecting a grout sealer for your shower, it’s crucial to consider the durability of the sealer to ensure that it can withstand the harsh environment of your shower and provide long-lasting protection.


As a last aspect in the list, we have price. This one is an important consideration when choosing a grout sealer, as it can vary greatly depending on the type and quality of the sealer. However, it’s essential to strike a balance between price and quality, as choosing a cheaper, low-quality sealer may cost you more in the long run.

Cheaper sealers may not provide adequate protection and may need to be reapplied more frequently, leading to additional time and money spent on maintenance. Conversely, a high-quality sealer may have a higher upfront cost but can provide longer-lasting protection and ultimately save you money in the long run.

Additionally, the project’s size and complexity should also be taken into account when considering the price. Larger projects may require more sealant and, therefore, a larger budget, while smaller projects may be more cost-effective with a cheaper, smaller-sized sealer.

How We Chose the Best Grout Sealers for Shower

The products we choose to include in our “best grout sealer for shower” list are all products that have undergone rigorous tests. The tests have been conducted for a long time to ensure that the sealers are long-lasting and durable. Most of these sealers are ones that we have used ourselves as home improvement specialists and tile installers. 

Aside from durability and longevity tests, we take into account the many factors stated above. We have included various products, different in formulas, prices, sizes, etc., to ensure that there is at least one product you, our reader, fancy. 

Additional details we considered were that people use different tiles, so we included a variety of sealers that can work for most types of surfaces without damaging the tiles. Most importantly, since showers are the main concern, we made sure that all sealers included in this list create a waterproof layer once applied. This detail ensures that the grout will not sustain water damage. 

Our Verdict 

After extensive research and testing, we have chosen Aqua Mix Sealers Choice Gold Rapid Cure and Black Diamond Stoneworks Ultimate Grout Sealer as the two best sealers on our list. Aqua Mix Sealers Choice Gold Rapid Cure has a rapid curing time, which means it dries quickly and is ready to use quickly. It also offers high protection to the grout and can be used on different surfaces, making it versatile. Additionally, the product is easy to apply, making it ideal for DIY enthusiasts.

On the other hand, Black Diamond Stoneworks Ultimate Grout Sealer stands out for its affordability, versatility, and high level of protection. It does not discolor black grout, a common problem with many other grout sealers. The product is also easy to apply, making it an ideal choice for homeowners who prefer to do the work themselves.

Overall, Aqua Mix Sealers Choice Gold Rapid Cure and Black Diamond Stoneworks Ultimate Grout Sealer are highly recommended for anyone looking for a quality sealer for their grout. They offer different benefits that make them stand out from other products on the market, making them a top choice for professionals and DIY enthusiasts.


For many homeowners, having a few frequently asked questions about grout sealers is helpful. It stands to reason that many first-time buyers may not be familiar with the products and how to use them properly. In this section, we answer some of the most common questions people ask when looking for the best grout sealer for shower.

Q. Should you seal your grout in the shower?

Yes, it is highly recommended that you seal your grout in the shower. Doing so will help protect your tile and grout from water damage and staining. Sealing your grout will create a barrier between the tile and the porous surface of the grout, which helps to prevent moisture from penetrating and damaging both surfaces. This also prevents mold growth since moisture cannot get absorbed into the grout lines. 

Q. How do I make my shower grout waterproof?

Shower grout is a porous surface, meaning it absorbs water and can easily become damaged over time. This can result in leaks that are difficult to repair. To make your shower grout waterproof, you need to seal the grout lines from moisture and prevent any further damage from occurring. 

The first step to making your shower grout waterproof is cleaning it thoroughly. Use an anti-bacterial cleaner or a mild soap solution to clean off any built-up grimy residue on the grout lines. Scrub away as much of this dirt and debris as possible with a scrub brush or power washer before rinsing with warm water and drying completely with towels or a hairdryer.

Once the area is cleaned and dry, you will need to apply a sealant specifically designed for use on showers that has been certified by NSF International (National Sanitation Foundation). Make sure the instructions on the bottle are followed precisely during application, especially if there are multiple coats needed for full protection. Give enough time between each coat according to product instructions so that everything sets correctly before proceeding. 

Q. What is the best way to protect shower grout?

When it comes to protecting shower grout, the best way by far is through the careful application of a clear silicone sealer. This sealant creates an effective barrier against moisture, mold, and mildew that may otherwise damage your shower grout. It’s not only a great solution for preventing water damage but also helps keep your bathroom looking brighter and cleaner in the long term.

How useful was this post?

Click on a star to rate it!

As you found this post useful...

Share it with your friends and family.

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

As the founder and editor-in-chief of Tile Sealing, I am committed to providing accurate and reliable information to our readers. Together with the team, I ensure that every article that gets published on our website is factually correct and trustworthy.

I am dedicated to making decisions that are in the best interest of our readers, rather than succumbing to pressure from companies looking to gain positive coverage for their products.

Disclosure: participates in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for publishers to earn fees by linking to and affiliated sites.