Tile
Should You Retile or Reglaze Your Shower?
One of these fixes how a shower looks. The other fixes what's happening behind the wall. Picking wrong is expensive.
A dated shower has two possible problems, and they call for completely different solutions. Getting this decision right saves a lot of money. Getting it wrong costs considerably more than the job you were trying to avoid.
The two questions
Is this a cosmetic problem, or a water problem?
Cosmetic: the tile is intact and solid, the grout is sound, nothing is loose or soft — you just hate the color, or the surface is stained and dull. That's a candidate for reglazing or refinishing.
Water: something is letting water past the surface and into the wall assembly. No surface treatment fixes that. Reglazing over a shower with a compromised waterproofing layer is putting a fresh coat of paint on a leak.
Warning signs it's a water problem
Any of these means look deeper before spending money on the surface:
- Loose or hollow-sounding tiles. Tap around the walls. A hollow tone means the tile has lost its bond, usually because the substrate behind it is failing.
- Grout that keeps cracking in the same place, especially at corners and where the wall meets the pan. That's movement, and movement means something isn't stable.
- A soft or spongy floor at the shower threshold or just outside it.
- Staining on the ceiling below a second-floor shower, or on the wall on the other side.
- A persistent musty smell that cleaning doesn't resolve.
- Missing or crumbling grout across a wide area rather than one spot.
Why grout isn't waterproofing
This surprises people: grout is porous. It always has been. It's a filler between tiles, not a water barrier, and sealing it slows absorption rather than stopping it.
What actually keeps water out of your wall is the waterproofing layer behind the tile — a membrane over the backer board and pan, with corners, seams and penetrations treated. In a properly built shower, water that gets through the grout hits that membrane and drains back into the pan. In a poorly built one, it reaches the framing.
Older showers were often built over materials we now know don't hold up in a wet area. If your shower is original to a house from the 70s, 80s or early 90s and it's showing any of the warning signs above, the assembly behind the tile is probably at the end of its life regardless of how the surface looks.
When reglazing is the right call
Reglazing is legitimate when the shower is structurally sound and the complaint is purely appearance. It's faster and cheaper, and it's a reasonable choice for a rental you're turning over, a house you're selling soon, or a bathroom you plan to gut properly in a few years.
Know the trade-offs: a refinished surface has a finite lifespan, it can chip, and it can't be cleaned with abrasives. It's a refresh, not a rebuild.
What a proper retile involves
If it's a water problem, here's the actual scope:
- Tear-out — tile, backer and pan come out to the studs so we can see what's behind them.
- Assessment — any rot, mold or damaged framing gets addressed at this stage. This is the part nobody can quote accurately in advance, because nobody knows what's back there until it's open.
- New substrate — proper backer board, installed and fastened correctly.
- Waterproofing — membrane over the pan, curb and walls, with corners, seams and the drain treated. Slope to the drain verified before anything goes over it.
- Layout and setting — dry-laid so cuts land sensibly, then set with the right mortar and checked for lippage as we go.
- Grout and seal — grouted, cleaned, and sealed where the material requires it.
Figure roughly four to seven working days, with cure time between stages that genuinely cannot be rushed. Waiting on waterproofing and mortar to cure is what makes the assembly sound.
The honest version
If someone looks at a shower with loose tiles and soft spots and offers to reglaze it, they're selling you a fix that will fail while the underlying damage keeps spreading. Water that's been getting into a wall for two years does more damage in the third.
Open it up, see what's there, and build it back properly. It's the more expensive answer today and the cheaper one over the life of the house.