How To Install Mosaic Tile In A Shower

How To Install Mosaic Tile In A Shower?

Everyone wants the space they live in to look good. And floors can say a lot about a specific area, whether it is a home or a commercial space. Mosaics are often used to decorate floors, with different designs and patterns. They have been quite popular for many years.

Structures like churches, cathedrals, and museums tend to have floors and ceilings adorned with mosaic. They do have a certain charm to them, and you can do many different designs with them. People even use mosaic in their homes, bathrooms, etc.

Mosaic Tiles For The Shower

Often, people like a fancy touch to their bathrooms. Maybe you want something different for your shower area, or you want to mark the area for users, or use drainage tiles. Either way, mosaics are a good choice for your shower, and with the right tools, ingredients, and guidance, you can even install it yourself!

Here is how to tile a shower wall and floor.

Step One

If you have calculated the number of tiles needed and the cost of tiling a shower, you can get to the first step. The first step to installing mosaic in your shower is a full cleanup of the surface you want to work on. Mosaic works with most materials, but it would be best if the base is made from concrete. You might need to remove the tiles that are already in that place.

Step Two

Vacuum or sweep the floor to remove any dust. You should also use a damp cloth to clean up any stubborn stains. Once your base is dry, it will be ready for work.

Step Three

You will also have to pick out the materials, or tesserae you want to use in your mosaic; you can use almost anything you want, from porcelain, marble, stones, to ceramic flowers, pieces of broken plates and seashells.

Step Four

Make sure that these materials are clean and dry before you use them.

Step Five

Now, you may be confused about the size and amount of tesserae you need to gather. Just consider your base and the design you will do. You can also draw a sketch, or just get enough to fill up the whole base.

Step Six

If you cannot collect anything that can pass off as tesserae, you can even buy mosaic tiles. Or, you can buy small, colorful gems from craft stores. That will do just fine too.

Step Seven

To decide exactly where each mosaic tile will go, you will have to sketch the design on to your base. If you already have a sketch on paper, you can transfer that on to the floor of your shower.

Step Eight

Once you have an accurate sketch of the design or pattern, you can go ahead and decide exactly where each tile goes. Place the tiles accordingly, or spread them out if you want to have a random, scattered design. Then you can start gluing them together.

Step Nine

For this next step, you have quite a few options that will work great as adhesives for the mosaic. The usual material used is a cement-based mortar, which can be produced by mixing cement, water, and sand.

Step Ten

You can also use thinset mortar, which will be perfect for the shower floor, which gets wet very often. If you are using mosaic tiles that are slippery, you can use acrylic-based glues. Just make sure that the adhesive you use is water-resistant.

Step Eleven

Depending on the type of adhesive you use, a bit of mixing could be required. You can buy acrylic resins in tubes, but mortar will need to be mixed. Follow all the guidelines given with the adhesive you bought, step-by-step.

Step Twelve

Next, you will have to apply the adhesive to the floor. For this step and the mixing, wear gloves and a mask to protect yourself. You can either pour the adhesive down on to the base, so it covers the whole surface, or glue each piece individually to the floor.

See Also: How to Cut Glass Mosaic Tile? Different Ways to Do it!

Step Thirteen

If you decide to spread your adhesive over the surface of the floor first, you will want to place the tiles in their specific positions before the adhesive starts to dry. So, wait just until it has spread evenly, and start positioning the tesserae. Press them down, so they are firm.

Step Fourteen

In case of using concave tiles, fill it up first with adhesive and then place it in the mixture. When placing the mosaic tiles, you may want to start from one end or corner and move down by rows. The order you work in will depend on the design you decide on.

Step Fifteen

Once you are done placing the tiles, you will have to leave the mosaic to set for around 24 hours. Of course, the drying time will depend on the adhesive you use but for most mortars, it is 24 hours. If you use acrylics or epoxy resins, it may dry faster, in 12-20 hours.

Step Sixteen

To make your mosaic have a nice aesthetic, smoother look, you will want to clear away some of the excess adhesives. As the mosaic sets, the adhesive may rise to the top. So, when it hardens a little, get a wet sponge or sponge mop and wipe the mosaic down to remove the extra adhesive.

Step Seventeen

Clean with care. However, if you let the mosaic sit for too long, it will be far too stiff and removing the excess will be very tough. You want a general softness in the mixture, so the adhesive comes off without ruining the mosaic’s look.

Step Eighteen

After the mosaic sets, you will have to apply grout to it, which is a mixture that will seal and fill up the spaces between the tesserae. You can also use different colors of grout to complement your design and make it stand out. The process of grouting and regrouting is very easy.

Step Nineteen

You can use black or off-white grout if you are in doubt about the colors. In case you want a more textured floor, you can skip the grout, as its function is to smoothen out the mosaic.

Step Twenty

You will have to buy and mix the grout yourself, at home. Just follow the instructions given by the manufacturers to decide on the quantity and ratio of the materials needed for mixing. You must wear a mask, gloves, and goggles when you are mixing the grout, as it is a very messy process.

Step Twenty One

Next, use a spatula to cover the mosaic with the grout mixture. Cover the whole surface with it, and make sure the grout fills all the gaps between the mosaic tiles. Then, let the mixture set for about 20 minutes, or as long as the packaging recommends.

Step Twenty Two

Once the grout has set and hardened enough, wipe away any of the excess with a sponge and warm water. Only leave enough grout to cover up the gaps but none on top of the mosaic pieces, as that will ruin how it looks.

Step Twenty Three

Buy a sealant, either matte or glossy, depending on the look you want your mosaic to get. Spray the sealant all over the surface of the mosaic to give it an extra layer of protection. Since the shower floor will get very wet, you can apply 1 or 2 extra coats.


With this last step, your DIY project will be complete! The sealant will dry within a few minutes, and then you can start using the floor. While this process includes various steps, a lot of waiting around and some hard work, the end product, if done right, will be worth it all. You can also use our post on how to repair cracked floor tiles, if you got yourself in the trouble.

If you do it all by yourself, there are more chances of the floor turning out exactly as you want it. Of course, the way a floor looks is bound to affect the whole vibe of the room, so it is important to have a cautious execution. And, if you follow these steps accurately, the result will be very satisfying.

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