Grout Replacement and Regrouting

Grout is easy to ignore until it turns gray, sprouts black spots in the shower corners, or starts falling out of the joints in little sandy chunks. At that point a lot of homeowners assume the whole floor or shower has to go. Often it doesn't. If the tile itself is still well bonded and in good shape, grout replacement can bring the surface back for a fraction of the disruption of a re-tile. It's also a job where the before-and-after difference is obvious the same day the haze comes off.

Signs It's Time for Grout Replacement

Our first step is to ask whether a deep tile and grout cleaning will get you where you want to be, because plenty of grout that looks hopeless is just dirty. Some problems sit inside the grout, though, and no scrubbing reaches them. We recommend replacement over cleaning when we see:

• Missing or crumbling grout in more than a few isolated spots
• Cracks that keep coming back after spot repairs
• Deep discoloration or mold staining that has soaked into porous cement grout
• Lingering musty odors in a shower even after a thorough cleaning
• Grout that's been damaged by acidic or harsh cleaners and now feels soft or sandy

If the grout is cracking because the floor underneath is moving, new grout alone won't hold. We explain the usual culprits in our post on what causes grout to crack, and we'll tell you if we see signs of a bigger issue.

Repair, Replacement or New Tile?

These three options get blurred together, so here's how we think about them:

Spot repairs are the least invasive, but aged grout shifts color, so a patch can stand out. When more than a handful of joints are failing, a full replacement usually looks better and lasts longer.

How Our Grout Replacement Works

1. Evaluation

We look at the condition of the tile, tap for hollow spots, check the joints at corners and around the tub, and ask how the room is used. That conversation shapes which grout we recommend.

2. Protecting the room

Drains get covered, fixtures and vanity tops get padded, and nearby flooring is protected. Removing grout creates fine dust, and we keep it contained.

3. Removing the old grout

Joints are cut out to a consistent depth using grout saws and oscillating tools fitted with carbide blades. This is slow, careful work; rushing it is how tile edges get chipped.

4. Cleaning the joints

Every joint is vacuumed and wiped so the new grout bonds to clean surfaces rather than dust and soap residue.

5. Installing new grout

Grout is mixed to the manufacturer's instructions, packed fully into the joints with a rubber float, and tooled to a consistent profile. Then the haze is cleaned off the tile faces.

6. Corners and changes of plane

Where walls meet the tub, the floor or each other, we typically use a flexible, color-matched sealant instead of rigid grout. Those inside corners move slightly, and rigid grout there tends to crack first.

7. Curing and sealing

Cement grouts are sealed once they've cured. We'll tell you exactly when the area is ready for use.

"Today's Home Services did an outstanding job re-grouting my 18 year old bathroom walls and floor. My bathroom looks brand new. The two men who performed the work were friendly, hard-working and extremely professional. It is refreshing to have work done that is hassle free." — Renee Huntley

What Affects the Cost

Every regrouting estimate comes down to a handful of drivers:

• Square footage and layout. A small shower floor and a full tub surround with a floor are very different amounts of joint.
• Walls vs. floors. Wall joints are cut overhead and around fixtures, which takes longer per foot.
• Joint width and tile size. Narrow joints in small mosaic tile mean far more linear feet of grout to remove.
• How hard the old grout is. Sound, dense grout takes longer to cut out cleanly than grout that's already crumbling.
• Tile type. Natural stone and soft-glazed tile need slower, more careful removal to avoid chipping edges.
• Grout choice. Epoxy and other high-performance grouts cost more and take more care to install than standard cement grout.
• Extras. Resetting loose tiles, recaulking corners and sealing all add to the scope.

For a wider look at budgeting bathroom work, see our guide to what a bathroom remodel costs, and our post on what affects tile cleaning costs if a deep clean may be enough.

Choosing the Right Grout

The grout we choose depends on joint width, tile type and how wet the area gets. Unsanded grout is generally used for very narrow joints, sanded grout for wider joints, and epoxy or other high-performance grouts where stain and moisture resistance matter most, such as busy showers and kitchen floors. Our guide to grout types goes deeper into the trade-offs.

Color is the other decision. A shade close to the tile reads as one calm field, while a contrasting shade outlines each tile; lighter grout shows dirt sooner, and mid-tone grays are more forgiving.

Why It's Worth Doing Right

Damaged grout isn't only a cosmetic problem. Open joints let water reach the setting bed and the substrate behind it, which is one of the common reasons shower tile fails, and in our humid Gulf Coast climate it's an invitation for mold and mildew. Replacing failing grout protects the tile installation you've already paid for, and keeping it clean afterward helps it last. Our post on how cleaning extends the life of tile and grout covers the upkeep side.

We're top-rated on HomeAdvisor, and we handle regrouting for homes in Bradenton, Sarasota and Lakewood Ranch, among other nearby communities. If your grout is past saving with a scrub brush, a free estimate will tell you whether repair, regrouting or new tile fits best.