Call Us: 480-219-9573

Hablamos Español

Why Grout Sealing is Important

Grout, the often-overlooked material that fills the gaps between tiles, plays a crucial role in maintaining tiled surfaces. Its porous nature, however, makes it susceptible to absorbing moisture, dirt, and stains if left unprotected. Grout sealing is a vital step in preserving the beauty and integrity of tiled surfaces. This article explores in detail the consequences of leaving grout unsealed.

What is Grout Sealing?

Grout sealing involves applying a protective barrier over the grout lines to prevent liquids, dirt, and stains from penetrating the porous grout material. There are two main categories of grout sealers: penetrating sealers and topical sealers. Penetrating sealers are absorbed into the grout, forming a protective barrier below the surface, while topical sealers sit on the surface of the grout, forming a protective coating.

What Happens to Unsealed Grout?

When grout is left unsealed, it becomes vulnerable to various problems that can compromise its appearance and integrity.

Unsealed grout is highly porous and can absorb liquids easily, leading to staining from spills, dirt, and grime. Common household substances such as coffee, wine, and oil can penetrate unsealed grout and leave behind stubborn stains that are difficult to remove.

Moreover, unsealed grout creates an ideal environment for mold and mildew growth due to its ability to absorb moisture. Mold and mildew thrive in damp, humid conditions, and unsealed grout provides the perfect breeding ground. Not only are mold and mildew unsightly, but they can also pose health risks.

Over time, unsealed grout can become discolored due to the accumulation of dirt, grime, and mold, making the grout lines appear dingy and unattractive, detracting from the overall appearance of the tiled surface.

In addition to staining and discoloration, unsealed grout is more susceptible to damage from everyday wear and tear. Foot traffic, cleaning, and other activities can cause the grout to deteriorate more quickly, leading to cracks, chips, and crumbling.

Ultimately, the failure to seal grout can lead to the premature deterioration of the tiled surface as a whole. When grout becomes stained, discolored, and damaged, it detracts from the beauty of the tiles and can even compromise their structural integrity, resulting in costly repairs or replacement down the line.

Benefits of Sealing Grout

Sealing grout offers a variety of benefits that can help protect and prolong the life of your tiled surfaces.

Firstly, sealed grout is much less susceptible to staining from spills, dirt, and grime. The protective barrier created by the sealer prevents liquids from penetrating the grout and makes it easier to clean up spills before they can cause damage.

Secondly, sealing grout helps to prevent mold and mildew growth in the grout lines. The sealer creates a waterproof barrier that prevents moisture from being absorbed into the grout, making it less hospitable to mold and mildew.

Thirdly, sealed grout is much easier to clean than unsealed grout. The smooth, non-porous surface created by the sealer makes it difficult for dirt and grime to adhere to the grout, allowing you to simply wipe it away with a damp cloth or mop.

Additionally, sealing grout can enhance the appearance of tiled surfaces by preventing discoloration and keeping the grout lines looking clean and fresh. Some sealers even offer the added benefit of adding a sheen or color to the grout, further enhancing its appearance.

Lastly, by protecting grout from staining, mold, and damage, sealing grout can help to prolong the life of your tiled surfaces. By preventing these common problems, sealing grout can help keep your tiled surfaces looking beautiful for years to come.

How to Seal Grout

Sealing grout is a relatively simple process that can be completed in just a few easy steps.

First, clean the grout thoroughly to remove any dirt, grime, or mold that may be present. Use a grout cleaner and a stiff-bristled brush to scrub the grout lines and remove any stains or discoloration.

Once the grout is clean, allow it to dry completely before applying the sealer. This usually takes at least 24 hours, depending on the humidity levels in your home.

Next, using a small brush or roller, apply the sealer to the grout lines, making sure to cover them evenly. Be careful not to get any sealer on the tiles themselves, as it can cause them to become slippery.

After applying the sealer, use a clean, dry cloth to wipe away any excess sealer from the surface of the tiles. This will prevent the sealer from drying and leaving behind a hazy residue.

Finally, allow the sealer to cure according to the manufacturer’s instructions. This usually takes at least 24 hours, during which time you should avoid getting the grout wet.


Sealing grout is an essential step in maintaining the beauty and integrity of tiled surfaces. By creating a protective barrier that prevents staining, mold, and damage, grout sealers can help prolong the life of your tiled surfaces and keep them looking beautiful for years to come. If you have tiled surfaces in your home, be sure to seal the grout to protect your investment and keep your home looking its best.

Read next: All the Flooring Brands We Carry

Related posts