Project Story · Sonoma Ranch · Far West Side
Sonoma Ranch Walk-In Shower Rebuild: Fixing a Leak the Right Way
By Rey Trevino · Published 2026-08-12 · 7-day build · $5,000 all-in
This one started the way most serious shower leaks announce themselves: a stain on the kitchen ceiling, directly below the master bath. Upstairs, the culprit was almost invisible — cracked grout along the edges of the garden tub and the walk-in shower. By the time water shows up a floor below, it has been traveling for a while. Here is how we rebuilt it right: new subfloor, real waterproofing, and a completely retiled shower and tub deck — $5,000 all-in, seven days on site, kitchen ceiling patch included.
The leak: cracked grout upstairs, a stained ceiling downstairs
The bathroom was original to the house — 2000s-era brown tile, a corner garden tub, a small tiled shower. Nothing looked broken. But grout had cracked along the edges of the tub deck and the shower, exactly where two surfaces meet and the house's natural movement concentrates. Every shower and every bath sent a little water through those cracks, into the deck framing and the subfloor, until it found the kitchen ceiling below.
Here is the part most homeowners are never told: grout is not waterproofing. Grout is rigid cement — it will always crack eventually at edges and corners, because those joints move. In a properly built bathroom that is fine, because a waterproof membrane sits BEHIND the tile and catches what gets through. This bathroom — like most builder-grade builds of its era — had nothing back there worth the name. The tile was the only line of defense, and the grout lines were its weakest point.
What we rebuilt — and the photo that matters most
We opened up the shower and the tub deck, cut out the water-damaged subfloor and replaced it, patched the kitchen ceiling below, and then rebuilt the whole wet area the way it should have been built the first time: waterproof board over the new tub deck and shower, sealed at every seam, before a single tile went on. Then the finishes — new large-format wall tile, a mosaic-lined niche, a mosaic shower pan, the retiled deck and wainscot, new floors, frameless glass, and new fixtures.
The photo below is the one we want every San Antonio homeowner to see. That red board is the waterproofing layer. When it is in place, a hairline grout crack ten years from now is a cosmetic touch-up — not a kitchen ceiling repair. When a contractor skips it, you will not know until the water finds its way out. It is a few hundred dollars of material, and we do not build showers without it. The full process is on the walk-in shower installation page.
The numbers: $5,000 all-in, 7 days
$3,500 in labor, $1,500 in materials — $5,000 total, fixed-price in writing before demo started. That covered the demo, the new subfloor, the kitchen ceiling patch, the waterproofing, all the tile work (shower, pan, niche, tub deck, wainscot, and floors), the glass, and the fixtures — about seven working days on site. The homeowner picked her tile and fixtures and paid material cost direct, with no contractor markup — the same labor-only structure on our 2026 bathroom cost guide.
For contrast: the acrylic-insert companies quote more than this to glue panels over the same walls — which, on a bathroom with an active leak, means sealing rot inside the wall where you cannot see it. Water damage does not stop because it got covered. If there is any chance your shower is leaking, it needs to be opened, dried, and rebuilt — that is also the heart of our water damage restoration work.
Ceiling stain? Cracked grout? Get it looked at before it grows.
Free 30-minute walkthrough with Rey. Honest assessment and a fixed-price written bid — repair if it's repairable, rebuild if it's not.
Shower leak & rebuild FAQ
- It depends entirely on how far the water traveled before you caught it. Cracked grout caught early can be a few hundred dollars of regrouting and sealing. Once water has reached the subfloor or shows up in a ceiling below — like this Sonoma Ranch project — you are rebuilding: this full job ran $5,000 all-in ($3,500 labor, $1,500 materials), including a new subfloor, the kitchen ceiling patch below, and a complete shower and tub-deck rebuild with real waterproofing.
