Grout Sealer for Shower image

Shower Grout Sealer | Step-by-Step Guide for Sealing Tiles in Bathroom

Are your tiles starting to look worn out and grouted? Is your shower tile grout sealer starting to chip away? The grout sealer for the shower is a must-have product for anyone who loves a tiled shower. In the past, tiled showers were outdated. It is also a great way to give your shower tile a clean, fresh look. Homes are a significant investment for most people, and many have some design elements. More and more homeowners are upgrading their bathrooms, which means there is more and more room to experiment. Have you ever considered transforming your bathroom into a shower? If so, then you need a waterproof shower grout sealer.

Should you Seal Grout in Shower?

The mixture of sand and cement, referred to as grout, adds an extra charm to the shower walls. It seems to be an easy process. Nowadays, epoxy-based grouts do not absorb water into the tiles. However, if you do not seal the grouts, water will get absorbed. It is necessary to seal the grout because the texture and uniformity look long-lasting. The sealers are made water-resistant to protect against splashes. Therefore, grouts will look stable for longer durations. People get confused about applying grout sealers in the shower room. The process is convenient and does not involve high costs. Grout sealers play a pivotal role in protecting the bathroom walls from being damaged.

What to Look for in a Grout Sealer for Shower Tile?

When buying grout sealers, look after the essential features for the application. Good quality sealers are odor-free and do not leave any stain behind. Following are the features to look for buying the best shower floor tile grout sealer:

1. Penetration

Sealers with excellent quality penetration capability can protect the tiles from damage. The application process for these sealers is easy and keeps the color intact. A variety of coloring options are available for penetrating sealers. Grouts on the tiles can go through extreme damage on the outer surfaces and become brittle. Sealers are applied to prevent the growth of molds and dirt. It leaves a natural-looking finish that can last for several years.

2. Color

Sealers are available in both color and colorless varieties. Color sealers are convenient to use and prevent discoloration of the material. They also remove the stains from the outer surface of grout and make it look flawless. In addition, it is water-resistant and can penetrate through the grout. After that, the original color of the stone and grout remains intact for years.

3. Non-penetration

This sealer protects the tiles from damage and gives a shiny texture from the outside. Non-penetrating sealers are an amazing choice if you apply in areas that have less dirt or grease. They will provide magnificent results when used in shower rooms, as sealers do not allow water to be trapped inside.

Non-penetrating sealers are excellent for damp areas that get wet maximum. These are easy to apply and give basic protection to your material. The kitchen floors also get an advantage from excessive oil and grease. This type of sealer is ineffective on glazed tiles as they fall off. Make sure to apply over natural stone or unglazed tiles. Non-penetrating sealers are reapplied after every year for long-lasting results. Look after the product that you are using for sealers.

4. Solvent-based

These sealers are efficient for concrete surfaces because they give a natural glossy finish in the end. The molecular structures present in these sealers are smaller. Solvent-based sealers are purchased for hard materials like polished granite or marble.

5. Water-based

They protect the surface from damage but leave a matte finish in the end. It all depends upon the personal preferences of people. If you want to apply grout sealers, water-based is the best choice. They have lower VOC levels which are more effective than any other sealers. In addition, water-based sealers are suitable for porous material so that the sealer does not fall off.

What Type of Grout Sealer to Use in a Shower?

Grout sealing bathroom tile seems to be an easy process, but there are different ways by which it is applied. Ensure not to use this material for non-glazed tiles because the soak will not come out later. It completely gets absorbed. Below are some of the ways of applying grout sealers:

1. Brush on

The sealers that appear milky inconsistency are applied with a small brush. Many people do not like this method because small drops of sealers fall on the tile surface. Wipe it off immediately if you notice anything. Applying sealers using a brush is difficult enough because of the irregular flow of sealers. In addition, they have a dense texture, which takes a longer time. It is impossible to leave the bathroom for more than the stipulated time.

2. Roller

The roller application has an efficient functioning in the use of grout sealers. You do not need any touch-ups for this method. The roller seamlessly glides along the surface and covers the spot entirely. The area can be made perfect using thin rollers. People all know the roller method of applying sealers.

3. Spray on

Roller application takes a long time to use for grout sealers. Spray bottles come in handy for covering the entire area. Wipe the tiles clean after applying sealers. Spray sealers will fall off after a few months, so it requires reapplication. They soak into the grout without remaining intact.

How to Seal Grout in Shower?

Step 1: Clean the Surface of Tiles

Before you apply any sealer, always clean the surface. It depends on the new grout material. Allow about 72 hours to dry the material thoroughly. Other grout manufacturers have a variety of materials. After drying up, scrub the loose debris and particles from the grout line. Use soapy water mixed with vinegar to remove the stains from top surfaces. This will make the texture smooth. Wipe it with a clean cloth afterward.

Step 2: Repairing the Previous Grout

Previous grout lines can develop cracks in them. Repair those lines with new materials. If you apply new sealers over the damaged material, it will fall off. The surface will start absorbing water and vandalizing it. Allow 1 hour after repairing before applying new sealers.

Step 3: Choose the Type of Sealers Suitable for your Material

The application of sealers depends on the type of tile you have. Otherwise, using the wrong sealer can damage the material or fall off. Customization of the sealers is also available from some manufacturers. The bottles of sealers mention the instructions and ingredients for use. The durability of the sealers depends on the moisture content of the surfaces.

Step 4: Make a Decision from the Sealers Available

Penetrating Sealers

These sealers are based on mineral or latex particles. The sealers are suitable for grout structures that have many pores in them. The grout structure absorbs the sealers and fills all the gaps within. Penetrating sealers are the best choices for use in shower rooms and bathrooms.


These sealers are durable to form a thick layer coating on the structure. They are not ideal for use in the bathroom as most of the trapped water leads to the growth of molds. In addition, due to a lack of proper ventilation, evaporation does not occur. Membrane sealers consist of pigmented colors so that the grout color can change. Also, we recommend not to use this sealer on glazed tiles.

Step 5: Look After the Applicator

The spray bottles used widely for applying sealers. This is because sprays are convenient to use on grout lines. However, if the grout lines appear thin, a sponge is recommended. It will be helpful to seal large sections of the gap on the walls.

Sealers that are applied to the glazed tiles are done using a brush. The applicator brushes have narrow tips that fill up the grout lines.

Step 6: Follow Guidelines to Apply the Sealer With Time

First, look after the small areas to apply sealers. By this technique, even the narrowest grout line will be covered. It will make the sealer look consistent and shiny. Next, wipe the excess sealer using a damp cloth and clean the area properly. Make sure to avoid dropping sealers on the tiles; otherwise, it will not come out after a few minutes.

Step 7: Go For the Second Coating after Drying Up

Apply the second coating only when the first coating dries up. It at least requires 2 coatings for better protection to the tiles. You can test the surface after applying the second coat. Drop a few drops of water on the surface and if it gets absorbed, go for the third coating.

Step 8: Allow the Surface to Dry

After applying coatings of sealers, make sure to dry the surface for about 24 hours. You can follow the guidelines of manufacturers for better results. Maintain these steps so that the sealers remain intact. Limit using the bathroom for a few days and arrange for alternatives beforehand.

How Often Should you Apply Sealing Grout in Shower?

Generally, grout sealers are applied annually. However, this completely depends on the surface and condition. Applying grout sealer once a year will prevent molds from growing back. It is best to apply sealers every six months so that the tiles remain intact. Reapplication of sealers is required in places that are used frequently. You may go through a difficult choice for applying sealers in the shower room. It is best to determine the current condition of the previous sealer and tiles. If absorption of water increases underneath the tiles, then replace it immediately.


Can you shower with unsealed grout?

If you haven’t sealed the grout, the water will stuck in between the tiles and forms the mold and mildew. So, it is always recommended to seal the grout and avoid the shower with unsealed grout.

Do you have to seal unsanded grout in a shower?

Sealing is not mandatory for unsanded grout in shower after installation, unlike sanded one. But in some applications it is recommended to seal the unsanded grout too.


Many homeowners are tired of their grout and are ready to replace it with something better and more durable. However, before you go out and buy a grout sealer, it is important to know the basics. A grout sealer for the shower is a simple way to have a beautiful shower that will last a long time. At the same time, it is a great way to fix minor bathroom problems, such as water stains.