How To Fill Gaps Between Tiles [Using Grout, Caulk, Gap Filling Powder, Or White Cement]

Imagine working hard to affix tiles to your wall, only to realize some gaps are visible. What can you do to close the space between the tiles? Here is what we learned after conducting a study on the subject.

The most straightforward methods to fill the tiles' gaps are white cement, latex, acrylic caulks, a thick paste of well-mixed grout, or a gap-filling powder. They give strength and consistency to gaps in marble floors, vitrified tiles, and ceramic tiles. 

The installation may occasionally have gaps that naturally develop and must be repaired to maintain the tile's integrity. You can use a putty blade for the application. For more information, keep reading.

Grouting tiles seams with a rubber trowel. worker applies grout whit rubber trowel tiles - How To Fill Gaps Between Tiles [Using Grout, Caulk, Gap Filling Powder, Or White Cement]

Filling Gaps In Between Tiles

When exposed to heat and cold, tiles can expand or contract and may experience gradual shrinkage. Using one of these four strategies to close the gaps is a fantastic choice if you want to keep your appearance modern and contemporary.

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Clean white broken tile wall texture background.Tile floor exploded and cracked because used for a long time,Repairing tiles in the house

It ensures that the gaps are sealed off and made airtight. The heat stays inside and prevents breaking from wall movements. Let's go over the four methods for bridging tile gaps in more detail.

White Cement

You can use white cement instead of grout, a cheap and adaptable substance. It is quick to dry and simple to use. So you don't have to wait forever to walk on your newly restored tiles.

Add a tiny amount of white cement and a few drops of water to the mixing container, and stir. Start filling the gap after preparing the cement. Use a putty knife to push the cement in after pouring it into the opening.

Have a look at this putty knife set on Amazon.

Pile of plaster powder isolated on white background


Apply long strips of caulk around fixtures and the perimeter of a tile project. Doing this guarantees that the caulk has a smooth surface that won't allow water to sneak in. Caulk is applied in tube form, either with a caulk gun or by squeezing the tube.

Trim the tube tip to make an opening roughly the same size as the spacing between the tiles and the base. As you proceed along the gap, continuously squeeze the caulk gun's tube or trigger to apply a bead of caulk.

Closeup image of Applying silicone sealant by Caulking gun ,silicon adhesive for general and industrial application. Maintenance concept.

See this caulking gun on Amazon.


A viscous liquid called grout is used to reinforce already-existing buildings or to fill up gaps, and it is typically a combination of sand, cement, and water.

Different grouting materials are employed depending on the materials you are bringing together. It can be made of cement and sand to fill cement block joints. You can use cement-based epoxy to fill ceramic wall and floor tile joints.

Have a look at this epoxy on Amazon.

Most DIYers can do the straightforward task of grouting. The application is not a task that calls for the assistance of professionals as long as you have the necessary tools and grouting supplies.

Grouting between tiles in the bathroom. Female hand holds a spatula. Repairs.

Gap-Filling Powder

Before using a gap-filling powder, remove all the dirt that has gathered inside the gaps. It gives a wide range of tiles better hardness, consistent uniform color, strength, and durability.

Can You Resurface Old Grout With New Grout?

Today's grout comes in various hues and textures, opening up a wide range of creative options for your tile installations. Re-grouting is not as challenging as you would think. Let's get into it!

New grout can be applied over the old grout right away; all you need is a grout removal tool. Use the device, and remove the old grout. Thoroughly clean the area to remove any grout dust or other obstacles that might impede the new grout from being installed.

Applying new grout over old grout is less complicated than a total re-grout. Additionally, it can fortify the surface to improve water resistance and make it more impervious to contaminants. 

A close up of a professional cleaner cleaning grout with a brush blade and foamy soap on a gray tiled bathroom floor

Applying New Grout Over Old Grout 

Grout will cure and break away if you try to apply it only inside cracks or where there is separation, leaving you right where you were before. Using fresh grout over existing grout is also not advised because the outcome won't be aesthetically acceptable. Nevertheless, there are advantages of re-grouting.

Less Hassle

The majority of re-grouting can be accomplished in a single day. It doesn't require you to leave the area or stop using the surface for an extended period. It makes an affordable and practical method to enhance the appearance of your house or place of business.

If the grout is beginning to break or is soiled, but the tiles are still in good condition, re-grouting could be less expensive than re-tiling the area.

Increases The Integrity of Tiles

Re-tiling a space with tiles offers many advantages. But re-grouting the area also makes the surface look brand-new. You also give it new life, protect it from harm, and increase the value of your property.

Additionally, improve the look of the tile by re-grouting. It creates a tight seal around each piece. It also guards against water damage, prolonging the life of your tiled surface.

Grouting tiles seams with a rubber trowel. worker applies grout whit rubber trowel tiles

Health Advantages

Rile re-grouting has health advantages. Mold and mildew that may be present in old and damaged grout should be removed. These toxins can cause respiratory issues in children, the elderly, and pets.

Not only will it eliminate the unpleasant black mold, but it will also eliminate the need for harsh chemicals to eradicate it.

apartment room with mildew and mold problem on the white wall

Budget Friendly

Many property owners are re-grouting rather than replacing their flooring. It helps them save money, add value, and improve the aesthetics and safety of their home or business. 

Close up of economical young woman manage household family budget calculate finances at home. Provident female put coin in piggy bank saving invest money for future payment. Investment concept.

When Does Grout Need To Be Changed?

The cement-like material takes quite a hammering over time and works as the glue for tiles on your walls, floors, and even worktops. If you need to re-grout, you won't have to remove all of the original putties. To touch up a few spots, you can use the same grout.

Here are the things to consider in replacing grout:

  • Tiny holes
  • Cracks following repair
  • Mildew and mold

Don't take quick cuts or a piecemeal approach while re-grouting. Do the job thoroughly. You save time by re-grouting everything at once and don't have to work on different areas again every few months.

Man uses Trowel to remove old grout. Replace the old grout between the tiles. Mining tiles for rerouting.

Seal Your Grout

Sometimes cement grout isn't coated in with a seal. And because unsealed grout is less well protected, it is far more prone to become stained, cracked, or damaged. Prevent moisture and soil from permeating the grout by sealing it. It makes cleaning easier and increases the lifespan of the grout.

Think about the following things when replacing grout.

the hands of the master rubs the brown grout on white tiles with a special sponge, finishing work, close-up, side view

Small Holes

Have you seen any little cracks in your grout? Water can enter through even the smallest gap, possibly harming your floor and the subfloor beneath it. Keep an eye on your grout and patch minor holes if you find them.

Small holes in the grout are sometimes the result of soupy grout, so remove any extra with sponge and let the area dry.

Cracks After Repair

The recurrence of cracks after replacing the grout may indicate a much more severe issue with the tile adhesive or subfloor. Cracked grout can occur when tiles loosen and lose their grip on the subfloor. It's essential to make a professional phone call at this stage and inquire about getting your subfloor inspected.

Mold & Mildew

Ensure that you remove everyday stains from your grout immediately. They aren't as harmful, but mold and mildew stains may do more harm. It most frequently occurs in bathrooms and shower stalls where your grout is continuously exposed to a very damp environment.

Grout with black, pink, red, or green hues may have mildew. If you discover it early, you can remove mold from tile and grout using a typical tile and grout cleaner. However, mildew can get stuck in the pores of the grout, in which case you might need to speak with a professional about a solution.

The image of black mold on the wall or on the ceiling, in vector.

See this grout cleaner on Amazon.

In Closing

Fill the holes emerging in the tiles with the materials mentioned in the post. There are four ways to fill tile gaps: grouting, caulking, white cementing, and gap-filling powder. Depending on the damage, the type of tiles, your budget, and other criteria, you can choose one of the suggested solutions.

If you find this article informative, check out these related articles:

How Much Space Between Mixtiles?

How To Tile A Bathroom Wall With Large Tiles?

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