How Much Does It Cost to Seal Grout? [2026 Data]

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. Sealing grout is an easy way to protect your beautiful subway tile backsplash or the luxurious marble countertop you splurged on during your last home reno.

A grout repair specialist near you can tackle the job, or you can do the project yourself with the right tools and supplies. Sealing your tile should be done about every three years to keep your grout free from mold, deterioration, and dirt buildup.

Factors Affecting the Cost to Seal Grout 

Many factors affect the cost of sealing grout, including: 

Size of Area 

Most tile contractors charge per square foot to seal grout; the more area you have, the more you can expect to pay. For example, a 160-square-foot area may cost $1.56 per square foot, but a larger area may cost as much as $2.00 per square foot.

Some contractors also charge a flat per-hour fee. The larger your area, the more hours the contractor will need to seal your grout. On average, tile contractors charge $30 to $60 per hour to seal grout, and depending on the size, it can take two to five hours.

Tile Size

The smaller the tiles, the more work is required, increasing the cost of sealing your grout. This is especially true if you’re paying per hour since it takes longer to seal more grout. Some contractors will increase the per-square-foot price for smaller tiles, which can put you at the higher end of the average cost, closer to $2 per square foot.

Type of Tile 

The type of tile matters when paying for cleaning and sealing the grout. Tiles with a matte finish, such as natural stone tiles, are more difficult to clean and will result in a higher cost to clean and seal—averaging $3 to $4 per square foot.

Tile and Grout Cleaning 

If you don’t want to clean floor tile grout yourself, you can pay a contractor for tile and grout cleaning before sealing your grout. The tile and grout cleaning cost will increase your overall cost, but if you seal dirty grout, you’ll seal the dirt and grime into your tiles. 

Depending on the size of the area, tile size, and type, you could pay as much as $4 per square foot for both services.

Materials 

Fortunately, the materials needed for sealing grout are minimal. Whether you DIY grout sealing or hire a contractor, you’ll pay an average of $0.30 to $0.50 per square foot.

Labor

Labor will be the majority of your cost when sealing grout since it’s a tedious job. On average, you can expect to pay $1 to $2 per square foot for labor, depending on whether you hire a local grout repair specialist for grout sealing only or both grout sealing and cleaning.

Why You Should Hire a Grout Repair Pro

The average cost of materials for a grout repair project is $85, and hiring a grout repair pro adds just $1 to $2 per square foot. Hiring a pro to seal grout is worth it to ensure your grout stays in place and mold-free for years to come.

Here’s why it’s ideal to hire a grout repair pro

There are several reasons why you should consider hiring a grout repair pro, including:

• A pro has the equipment to clean your tiles quickly, allowing the grout sealant to better adhere to the surface. 

• Floor specialists can correctly identify the best techniques for sealing grout based on the type of tile and porosity. 

• Improperly sealing grout can lead to a shorter lifespan, mold, and mildew. 

• You can also damage the tiles if you seal or clean them incorrectly, leading to costly repairs that require the help of a professional anyway. 

If you want to DIY a grout sealing project

Sealing grout is a project that you can DIY if you have experience, but if you’re unsure about any part of the process, there are ways you can help without sealing it yourself:

• Clean the tiles yourself.

• Clear the flooring to make your home more accessible.

Why Should You Clean and Seal Your Grout?

Cleaning and sealing grout makes your tile look cleaner, last longer, and resist moisture. Tile installation cost—plus the cost of tiles—is a hefty investment, so cleaning and sealing the grout protects your investment and eliminates the need for you to learn how to regrout a tile floor.

Dirt and grime won’t build up on the tiles, making them look cleaner longer. This will naturally lengthen the life of your tile, as it will block out moisture, which sealing grout does, too. When tiles can’t absorb moisture, there’s a lower risk of mold and mildew growth, which not only lengthens the life of your tile but also protects your family’s health and well-being.

How to Save on Grout Sealing Costs

Wondering how you can save some dough? Here are our top tips for this project:

• DIY grout sealing: Sealing grout yourself is the easiest way to save money on grout sealing costs. If you’re confident in your ability to seal it properly and have the time, you can save as much as $110 to $140. However, hiring a pro can save you a lot of time, get you a pristine appearance, and keep you from the strain and pain that comes with sealing jobs.

• Clean the grout yourself: If you want a professional to seal the grout, you can handle the cleaning beforehand to cut costs. Just make sure you clean the grout right before they come to seal it to avoid any dirt or debris accumulation before it’s sealed. Either way, sealing grout saves on the cost of regrouting tile floors, which is more expensive and labor-intensive.

• Get multiple bids: As with any home improvement project, you should always contact at least three contractors about pricing. You could also consider hiring a handyperson instead, who might charge a bit less than a specialist. 

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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