Grout Repair in St. Louis, MO: Re-Grout, Seal, and Stop the Water

Grout repair in St. Louis, MO is the small job that prevents the big one. Cracked or missing grout lets water behind the tile, and behind the tile is the drywall, the backer, the subfloor — and that's where the expensive damage happens. A re-grout and seal is a fraction of a tile replacement, and it stops the water before it gets further. Here's what we fix and how we match it.

The grout problems we fix

• Cracked and crumbling grout lines
• Missing grout where water is visibly getting behind the tile
• Discolored and stained grout that won't clean
• Failed caulk-to-tile transitions at tubs and showers
• Loose or hollow tiles from water-damaged grout

Full scope on our flooring and tile page.

Re-grouting the right way

Re-grouting isn't spreading new grout over old. We rake out the loose and cracked grout to a clean depth, vacuum the joint, and pack fresh grout in — matched to the existing color as closely as grout allows. The joint has to be clean and dry or the new grout won't bond, and it'll crack out again in a season.

Sealing after repair

Grout is porous, and in a wet area it absorbs water every use. We seal the re-grouted joints after the grout cures — it won't make grout waterproof, but it buys time and slows the next failure. We recommend resealing periodically, especially in shower and tub areas.

The caulk-to-tile transition

Where tile meets a tub or a sink, the joint should be caulked, not grouted — grout cracks at the movement joint. We replace failed grout at those transitions with a flexible, mildew-resistant caulk. See our interior painting and caulking page for the caulk detail.

Get a grout repair quote

Send us a photo of the cracked or missing grout and the tile color if you want a match. We quote flat and tell you whether a re-grout is enough or the substrate needs attention. We do grout repair across the metro, from Central West End to Crestwood to Fenton. Request a grout repair quote today.