Fix the Problem. Not Just the Surface.
We remove cracked, crumbling, missing, and mold-affected grout from tiled surfaces throughout your home and replace every compromised section with commercial-grade epoxy grout. Our grout repair addresses the structural cause of grout failure, not just the visible result. Every job is backed by our workmanship guarantee.
Licensed & Insured
Epoxy Grout on Every Repair
100% Satisfaction · pH-Neutral Hand Cleaning
Our grout repair service removes all structurally compromised grout — cracked, crumbling, hollow, missing, and mold-affected sections — and replaces each section with commercial-grade epoxy grout. Epoxy grout is non-porous, bonds permanently to the tile substrate, and does not crack, shrink, or absorb moisture under normal residential use.
Grout failure is not a cosmetic issue. Every cracked or missing grout section is an active opening through which water travels directly to the substrate, the waterproofing membrane, and the structural framing beneath the tile. Cementitious grout, the standard material in most residential tile installations, is porous and rigid by composition. When the substrate beneath tile shifts under foot traffic, thermal cycling, or structural settlement, the rigid grout line cannot flex with the movement and cracks. Once a crack forms, water enters the joint with every shower, cleaning session, or spill. The damage behind the tile accumulates invisibly while the surface shows only the original crack.
The correct response to damaged grout is complete removal of the compromised material followed by replacement with a material that outperforms what failed. Applying new cementitious grout over old cementitious grout produces poor adhesion and replicates the same failure on a shorter timeline. We remove every compromised grout section completely and replace each one with commercial-grade epoxy grout. Epoxy grout does not share the structural limitations of cementitious grout. Epoxy grout bonds permanently to the tile substrate, resists moisture, and holds its structural integrity under the thermal and mechanical stresses that cause cementitious grout to crack. This is why our grout repair produces results that do not need to be repeated.
Why Choose Us?
Every grout cleaning and epoxy sealing job we complete includes a 5-year transferable warranty. It transfers to the next homeowner at no additional cost → a direct addition to your home's resale value.
We use neutral-pH cleansers, professional rotary scrub systems, and commercial-grade epoxy color sealers on every job we take. We remove embedded grime and mold from grout pores then seal them, so dirt stays out.
Our Process
Our grout repair process uses 4 steps: full surface inspection and damage assessment, complete removal of all compromised grout, replacement with commercial-grade epoxy grout, and a final inspection before we leave. Most residential grout repair jobs complete in a single visit.
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There are 5 signs that grout in your home has moved beyond a maintenance issue into a structural repair need. We assess all 5 during every free on-site estimate.
Cracks along grout lines indicate the substrate beneath the tile has moved beyond what the rigid grout can accommodate. Cementitious grout has no flexibility. Any movement in the tile assembly — from foot traffic, thermal expansion, substrate deflection, or building settlement — transmits directly into the grout line as a crack. Each visible crack is an active water intrusion point from the moment it opens. Addressing cracks at this stage prevents the more costly substrate damage that follows extended water infiltration.
Grout that crumbles or dislodges with light finger pressure has lost its structural bond across the full joint depth. This level of degradation typically results from prolonged moisture infiltration into the grout body, acid-based cleaner damage to the cementitious matrix, or original installation with an incorrect water-to-powder ratio. Crumbling grout no longer functions as a joint filler or a barrier against water reaching the substrate.
A hollow sound when grout lines are tapped lightly indicates the grout has separated from the substrate beneath it, leaving a void at the bond line. This void collects and retains moisture with every water exposure event, creating sustained damp conditions at the substrate level. Hollow grout sections do not fail visually until the damage behind them is already advanced. We identify hollow sections during our inspection and treat each one as a priority repair.
Missing grout sections are open channels that allow water, cleaning product, and debris direct access to the tile substrate and any waterproofing layer beneath it. Missing sections on shower floors and walls are particularly serious because standing water and continuous moisture exposure enter these openings with every use. Missing grout also removes the lateral support between adjacent tile edges, increasing the risk of tile chipping and cracking at exposed edges.
Permanently darkened grout sections that do not respond to cleaning indicate differential moisture absorption across the joint. Darker sections have higher porosity than surrounding grout, meaning the cementitious binder in those sections has degraded and the joint is absorbing more water per exposure event than structurally sound grout. These sections are at a higher risk of cracking and crumbling than surrounding grout and indicate areas where repair is the appropriate response rather than continued cleaning.
Grout cracks and crumbles in residential homes for 3 primary reasons: substrate movement that exceeds the rigid grout's structural tolerance, sustained moisture infiltration that degrades the cementitious binder over time, and acid-based cleaner damage that erodes the calcium compounds in the grout matrix.
Patching new cementitious grout over existing damaged grout and our grout repair produce 2 fundamentally different structural outcomes. Patching bonds to a compromised surface and fails on a shorter timeline than the original. Our grout repair removes all damaged material and replaces each section with epoxy grout that bonds permanently to the tile substrate.
| Patching Over Existing Grout | Our Grout Repair | |
|---|---|---|
| Removes all damaged grout | ✗ | ✓ |
| Bonds to tile substrate directly | ✗ | ✓ |
| Replaces with epoxy grout | ✗ | ✓ |
| Non-porous repair material | ✗ | ✓ |
| Resists moisture infiltration | ✗ | ✓ |
| Resists cracking under movement | ✗ | ✓ |
| Color matched to existing grout | Varies | ✓ |
| Addresses structural cause of failure | ✗ | ✓ |
| Result durability | Months | Long-term |
| Workmanship guarantee | ✗ | ✓ |
Most handyman and general repair services patch damaged grout sections with new cementitious grout applied over the existing damaged material.
This approach produces a visually cleaner result for a short period before the same failure pattern repeats, because the patching material bonds to a compromised surface rather than to a clean substrate.
We remove every compromised section and replace each one with epoxy grout bonded directly to the tile substrate. The repair is structurally sound from the substrate level up.
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Where We Work
Entryway grout carries the highest foot traffic load of any interior tile surface and cracks faster than in any other room in the home as a result. Abrasive particles tracked in from outdoors accelerate surface erosion at the grout face simultaneously. We repair cracked and missing entryway grout sections with high-durability epoxy grout rated for sustained foot traffic.
FAQs
No. New grout applied over existing cracked grout bonds to the compromised surface rather than to the tile substrate, producing a repair with poor adhesion that fails faster than the original installation. We remove all damaged grout completely before applying any new material. Complete removal is the only method that produces a structurally sound, lasting repair.
Standard cementitious grout is porous and rigid, making cementitious grout susceptible to the same moisture infiltration and substrate movement that caused the original failure. Repairing cementitious grout with the same material reproduces the same structural limitations. Our epoxy grout is non-porous and bonds permanently to the tile substrate. Epoxy grout does not absorb moisture and handles substrate movement substantially better than cementitious grout, producing a repair that does not need to be repeated.
Grout requiring repair has damage in specific sections — individual cracks, isolated hollow areas, missing joints, or localized mold-affected sections — while surrounding grout remains structurally sound. Full regrouting applies where damage is widespread across the majority of grout lines on a surface. We assess the full scope of damage during our free on-site estimate and give you a clear recommendation for the appropriate level of repair before any work begins.
Not always. Cracked grout in isolated sections typically indicates grout-level failure from substrate movement or moisture, with tile remaining intact. Tile damage from substrate issues presents as loose tiles that shift when pressed, tiles that sound hollow when tapped, or visible cracks running across the tile face rather than along the grout line. We inspect the full tile assembly during our estimate and tell you exactly what we find.
Most residential grout repair jobs complete in a single visit. Total time depends on the number of damaged sections, total surface area, and whether the repair involves a single room or multiple surfaces. We provide a specific time estimate during your free on-site inspection before any work begins.
Most residential grout repair jobs range from $200 to $800 depending on the number of damaged sections, the surface area involved, and the surfaces being repaired. We provide a free, no-obligation on-site estimate before any work begins with a transparent itemized quote and no pressure.
Licensed & InsuredEpoxy Grout on Every Repair100% Satisfaction · pH-Neutral Hand CleaningContact us
We provide free on-site estimates for our grout repair service throughout the Knoxville area. Every estimate includes a full grout line inspection across the complete tiled surface, a clear assessment of every damaged section, and a transparent itemized quote with no obligation before any work begins.
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