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Is grout waterproof? Know all about Waterproof Grout Sealer

Is grout waterproof

Grouts are an essential part of bathroom and kitchen tiles. You can find them in moist areas of the home. When we associate the word moist with grout, the first thought that comes to our mind is – is grout waterproof? The answer is no; grout is not waterproof. However, it is water-resistant.  Water, oil, and other liquids can easily penetrate the grout. You need to submerge the grout in water for a very long time to know if it is a waterproof grout or if you are assuming your grout to be waterproof. In this blog, we’ll explore grout, its waterproof properties, and the importance of using a waterproof grout sealer.

is grout waterproof

What is Grout?

Grout is a dense fluid used to fill gaps between tiles and secure them to their bases. It’s typically made from cement, water, and sometimes sand. Grout comes in various colors and can be either sanded or unsanded, depending on the width of the gaps between the tiles.

Types of Grout

There are three main types of grout: cement-based grout, epoxy grout, and urethane grout.

1. Cement-Based Grout

Cement-Based Grout

Cement-based grout is the most common type of grout. It’s affordable, accessible to work with, and comes in both sanded and unsanded varieties. However, it’s also the most porous type of grout and is prone to staining and water damage if improperly sealed.

2. Epoxy Grout

Epoxy Grout

Epoxy grout is a more expensive alternative to cement-based grout, but it’s also much more durable and resistant to stains and water damage. It’s made from a mixture of epoxy resin, hardener, and filler and is available in various colors.

3. Urethane Grout

Urethane grout is a relatively new type of grout that combines the durability of epoxy grout with the ease of use of cement-based grout. It’s also highly resistant to stains and water damage and doesn’t require sealing.

Is Grout Waterproof?

The short answer is no; grout is not inherently waterproof. Cement-based grout, in particular, is quite porous and can absorb water and stains if not properly sealed. However, you can take steps to make your grout more waterproof.

Importance of Waterproof Grout Sealer

Waterproof grout sealer is a specially formulated product designed to penetrate the surface of the grout and create a protective barrier against water, stains, and mildew. Without a waterproof grout sealer, water can seep into the grout’s pores, causing it to discolor, crack, and degrade over time. By sealing your grout, you can protect it from water damage and prolong its lifespan, keeping your tiled surfaces clean and beautiful for years.

How Does Waterproof Grout Sealer Work?

How Does Waterproof Grout Sealer Work

Waterproof grout sealer works by penetrating the surface of the grout and creating a protective barrier that repels water and stains. Most waterproof grout sealers are made from silicone, epoxy, or urethane, designed to bond with the grout and create a waterproof seal. Once applied, the sealer fills the grout’s pores, preventing water from seeping in and causing damage.

Application of Waterproof Grout Sealer

Applying waterproof grout sealer is a relatively simple process that DIY enthusiasts can do.

Here’s how to do it:

  1. Clean the grout: Before applying the sealer, make sure the grout is clean and free of dirt, debris, and soap scum. You can use a mild detergent and a stiff-bristled brush to clean the grout.
  2. Apply the sealer: Using a small brush or roller, apply the sealer to the grout lines, covering the entire surface evenly.
  3. Wipe off the excess: After allowing the sealer to penetrate the grout for a few minutes, wipe off any excess sealer with a clean, dry cloth.
  4. Allow to dry: Finally, allow the sealer to dry completely before using the tiled surface.

Waterproof Grout Sealer for Shower

Waterproof Grout Sealer for Shower

Waterproof grout sealer is essential in areas exposed to water regularly, such as showers and bathrooms. Without a waterproof sealer, the grout in your shower can quickly become stained, discolored, and damaged by water and mildew.

How to Choose the Right Waterproof Grout Sealer

When choosing a waterproof grout sealer, there are a few factors to consider:

  • Type of grout:

Make sure you choose a sealer compatible with your grout type, whether cement-based, epoxy, or urethane.

  • Application method:

Some sealers are applied with a brush or roller, while others come in spray form. Choose a sealer that is easy for you to use.

  • Durability:

Look for a sealer that protects against water, stains, and mildew.

Tips for Applying Waterproof Grout Sealer

Tips for Applying Waterproof Grout Sealer

  • Work in small sections:

To ensure even coverage, work in small sections, applying the sealer to one area at a time.

  • Use a clean cloth:

Wipe any excess sealer with a dry cloth to prevent streaking and buildup.

  • Allow to dry completely:

Be sure to allow the sealer to dry completely before using the tiled surface.

How Long Does a Waterproof Grout Sealer Last?

The lifespan of a waterproof grout sealer can vary depending on factors such as the type of sealer used, the quality of the grout, and the amount of wear and tear the tiled surface receives. On average, most waterproof grout sealers last between 1-3 years before needing to be reapplied.

Waterproof Grout vs Regular Grout

  • Waterproof grout repels water and stains, making it ideal for moist areas such as showers, bathrooms, and kitchens.
  • Regular grout, on the other hand, is much more porous and absorbent and, if not properly sealed, is prone to staining and water damage.

Common Mistakes to Avoid When Sealing Grout

Common Mistakes to Avoid When Sealing Grout

1. Not cleaning the grout properly before sealing:

Clean the grout thoroughly before applying the sealer to ensure proper adhesion.

2. Applying too much sealer:

Applying too much sealer can lead to streaking and buildup, so be sure to wipe off any excess with a clean, dry cloth.

3. Not allowing the sealer to dry completely:

Be patient and let the sealer dry completely before using the tiled surface.

Advantages of Using Waterproof Grout Sealer

1. Protects against water damage:

Waterproof grout sealer creates a protective barrier that repels water, preventing damage to the grout and underlying surface.

2. Prevents staining and discoloration:

Waterproof grout sealer repels water and stains, helping keep tiled surfaces looking clean and beautiful.

3. Prolongs the lifespan of the grout:

By protecting against water damage and staining, waterproof grout sealer helps prolong the lifespan of your grout, saving you time and money on repairs and replacements.

Disadvantages of Using Waterproof Grout Sealer

1. Requires regular maintenance:

To maintain its effectiveness, waterproof grout sealer needs to be reapplied every 1-3 years.

2. Can be messy to apply:

Applying waterproof grout sealer can be a dirty and time-consuming process, especially in large areas.

3. Can be expensive:

Waterproof grout sealer is more costly than regular grout, and the cost can add up if you have a large area to cover.

Conclusion

Grout may seem like a small detail, but it plays a significant role in your tiled surfaces’ overall look and longevity. By properly sealing your grout with a waterproof grout sealer, you can protect it from water damage and keep it looking clean and beautiful for years to come.

Frequently Asked Questions (FAQs)

Q.1 Are bathroom tiles waterproof? 

Bathroom tiles are not inherently waterproof, but certain types, such as ceramic and porcelain tiles, are water-resistant. However, you can make your bathroom fully waterproof by properly sealing both the tiles and the grout using a waterproof sealant. 

Q.2 Can grout be made waterproof?

Yes, you can make the grout waterproof by applying a specially formulated waterproof grout sealer. This sealer penetrates the surface of the grout, creating a protective barrier that repels water, stains, and mildew.

Q.3 How to waterproof old grout?

To waterproof old grout, follow these steps:

  • Clean the grout thoroughly to remove any dirt, debris, and soap scum.
  • Apply a waterproof grout sealer using a brush or roller, and ensure to cover the entire surface evenly.
  • Wipe off any excess sealer with a clean, dry cloth.
  • Allow the sealer to dry completely before using the tiled surface.

Q.4 Can you seal grout with epoxy?

Yes, you can seal grout with epoxy. Epoxy grout is a type of grout that is highly durable and resistant to water, stains, and mildew. It’s made from a mixture of epoxy resin, hardener, and filler and is available in various colors. Epoxy grout is an excellent choice for areas exposed to moisture, such as showers, bathrooms, and kitchens.

Author Profile

Jack Martin

Hi, My name is Jack Martin. I feel like a jack of all trades in the cleaning solutions and product review world. With my creative mind, I run my blogging website, where I share product reviews and insightful blogs to help readers make informed decisions about their cleaning needs. I have a decade of experience and would love to write about reasonable cleaning solutions. When not writing blogs or product reviews, I love to watch aesthetic cleaning videos, football, and FRIENDS. The best part of my work is to provide valuable content and honest reviews to help homeowners and cleaning enthusiasts.

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