Do most tile installers seal grout?

Author: Prof. Virginia Blick  |  Last update: Tuesday, July 22, 2025

Most installation companies don't even offer grout sealing. They specialize in tile installation, and will tell you not to seal the grout, when we all know it will be dirty in 60 days. They don't want the hassle nor be responsible when the grout get's dirty.

Do tile installers seal grout?

Many companies don't automatically include grout sealing in a job with new tile flooring for a few reasons. First, companies can't seal grout until at least 48 to 72 hours after applying grout. By that time, bathroom remodelers typically have already cleaned up from the job and left your home.

Why do contractors not seal grout?

Whoever installed your floors most likely did not seal the grout because it needs time to harden and cure completely.

Do tilers seal grout?

While the tile industry does not require sealing, it is always recommended, especially in wet or high-traffic areas. Penetrating sealers are the most commonly used and offer high water, chemical and stain resistance. They provide protection without changing the appearance of the grout joint.

How much does it cost to have someone seal grout?

The price depends on the tile material and size, the condition of the grout, and whether you hire a professional or DIY. The average cost to seal grout is $150 to $250 for 160 square feet of space, including materials and labor, though the price depends on the size of your tiles and the condition of your grout.

How To Seal Grout - DIY for Beginners

What happens if you don't seal grout?

If grout is not sealed, it can absorb water and become a breeding ground for bacteria. It can become unsightly and ruin the entire design of your space and be hazardous to your health. If you have young children or tiles in an area where you eat, you need to ensure that they are as clean as possible.

Is it cheaper to regrout or retile?

Do You Regrout or Retile? The average cost of tiling a shower is about $1,800–$5,000. Retiling a shower will be a few hundred dollars more once you factor in $2–$5 per square foot to remove the old tiles. Regrouting shower tiles costs significantly less, with an average price range of $700–$1,500.

What are the disadvantages of sealing grout?

The Drawback of Using Grout Sealer

Moisture can still pass through most sealers, meaning grout isn't entirely waterproof even when sealed. Over time, grout in areas like bathrooms will naturally stain or show signs of aging, regardless of sealing.

How do I know if my grout needs sealing?

The next step for you to take is to inspect the grout properly. If it gets darker or changes color, it is a clear indicator that the grout hasn't been sealed.

What happens if you don't seal porcelain tiles?

Most porcelain tiles won't need sealing, as they are naturally robust and offer water resistance. However, if you have polished porcelain or other porous tiles they must be sealed to stop water from entering and damaging the tile. Unsealed tiles can stain, and attract dust and dirt which can be difficult to clean.

How often should you reseal grout?

For high-traffic areas, like the main bathroom, you should consider sealing it every six months, while low-traffic areas like the guest bathroom can be resealed every two years. If you are using epoxy grout, it might not be necessary to reseal it as it is highly water-resistant.

Will grout crack if not sealed?

Moisture can penetrate the grout, causing it to expand and contract, leading to cracks and gaps between tiles. These openings not only look unsightly but can also allow further moisture intrusion, potentially leading to structural damage to the underlying substrate.

What happens if grout sealer dries on tile?

It is important not to leave any excess sealer on the tile surface because it won't get absorbed and it can leave a sticky surface that can become a maintenance problem.

Can you seal grout years later?

You can seal the grout the day after you applied it or 100 years later. If it isn't dirty, seal all three sides of the shower with a tile sealer or masonry sealer. That will make the grout water-resistant, if not waterproof, and help prevent the growth of mold and dirt.

Can you seal grout yourself?

Although it may require a little patience, sealing grout is an extremely simple process, and there's no need for any specialist tools. However, for easy application and professional results, make sure you choose the right product for the job. Here are a few tips on selecting grout sealer.

Can you walk on tile after sealing grout?

A: The recommended waiting time before walking on sealed tiles and placing furniture back on them is typically around 4 hours. This allows the tiles to become touch dry, making it safe to walk on the surface and return most furniture items.

How much does it cost to seal grout?

In most cases, grout sealing costs are based on the square footage of the area that needs sealant. Bids will normally include both materials and labor costs. The average price for grout sealing alone is $125–300.

Does modern grout need to be sealed?

Most installers will not seal the tile surfaces right away to ensure that the grout has enough time to cure completely. However, once the grout is completely dry, using a sealer to protect it would be a smart decision. Grout recoloring and sealing has many benefits to help keep up your home and protect your investment.

What grout doesn't need to be sealed?

SINGLE COMPONENT GROUT

It shares many of the benefits of epoxy grout: it has excellent color consistency, doesn't need to be sealed, resistant to breakage and chemicals, resists mold and mildew, is stain resistant, and doesn't effloresce.

Can you put too much sealer on grout?

Using Too Much Sealant

You might be tempted to use more grout sealer to get the job done quickly, but an excess amount can easily spill over onto the tiles. As a result, unnecessary time will have to be spent scrubbing the excess sealant off.

Will grout leak if not sealed?

To maintain the integrity of grout, you will have to apply a grout sealer. It is necessary to apply the sealer after 1 to 2 years so that the grout remains intact and waterproof. Sealing grout is necessary because it without a waterproof covering it absorb not just water but bacteria and stains as well.

Does sealing tile make it shiny?

In the beginning, you asked, "How can I make tile shiny?" We answered: Focus on regular cleaning, use natural cleaning solutions, and take care of grouts. To make them even shinier, seal the tiles with a shiny sealer or use products like crystal waxes or polymers.

How often should tile grout be replaced?

Tiling is a great way to improve your home, but you may have to replace grout every 8-10 years. However, this is something that you can do on your own! If you are regrouting tile, it is vital that you use professional tools and materials.

Do grout rakes work?

A dedicated grout rake or a Stanley blade is best for removing existing grout. Grout rakes can be both mechanical and electric. Any electric grout rake is usually 240V and has variable speeds. The Rubi Grout Remover helps to remove grout surrounding ceramic and porcelain tiles.

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