Arvada Shower Leak Repair & Rebuild with Custom Pan
Insurance-related shower reconstruction — structural damage repair, custom liner-based shower pan, 12×24 wall tile, mosaic floor, and recessed niche for a fully restored bathroom.
Project Overview
This Arvada shower remodel began as an insurance-related reconstruction project. The homeowner contacted us after a persistent leak had developed in an older tiled shower. During the initial inspection, we found that water had been getting through a corner joint in the tile assembly, and the age of the shower was already showing. Tiles were loose, sections were failing, and it was clear that the problem went well beyond the surface.
Once demolition started, the real extent of the damage became visible. There was significant water intrusion behind the tile, along with rotted wood in the subfloor area and damage to sections of the 2×4 framing. At that point, a cosmetic repair was no longer the right solution. The shower needed to be rebuilt properly from the framing and floor up.
We removed the damaged materials, replaced the compromised plywood, cut out deteriorated areas, repaired framing where needed, and then built a new custom shower pan with a shower liner system. The finished shower was completed with 12×24 wall tile, mosaic floor tile, and a recessed wall niche, giving the homeowner a clean, modern shower that was structurally sound again.
Project Details
Location
Arvada, CO
Project Type
Insurance Shower Reconstruction
Timeline
Approximately 2 weeks
Issue
Leak damage, rot, failing tile
Scope of Work
- Full shower demolition
- Subfloor & plywood replacement
- 2×4 framing repair
- Custom liner-based shower pan
- 12×24 wall tile installation
- Mosaic shower floor tile
- Recessed wall niche
The Challenge
Older showers often fail slowly before the homeowner can see the full problem. In this case, the visible signs started with a leaking corner and tile that was beginning to detach. But when water gets past weak joints over time, it does not stay at the surface. It moves into the substrate, the framing, and the floor assembly below.
That is exactly what happened here. After demolition, we found extensive water damage and wood rot in the base of the shower. The damaged areas had to be cut out and rebuilt before any waterproofing or tile work could begin. The challenge was not just to make the shower look new again, but to restore the structure underneath it so the new installation would have a dependable foundation.
Our Solution
From demolition and structural repair to a fully rebuilt, watertight shower
Demolition & Damage Assessment
We began by demolishing the old shower and exposing the full extent of the damage. With the walls and base opened up, we were able to identify the deteriorated sections of subfloor and framing and remove everything that could no longer be trusted. That included water-damaged plywood, rotted bottom plates, and compromised sections of the 2×4 wall structure.
Structural Repair
With the damage fully exposed, we replaced the compromised plywood and rebuilt portions of the 2×4 framing so the new shower would sit on stable, dry structure instead of compromised wood. New bottom plates were installed, the subfloor was replaced, and the shower plumbing was roughed in to prepare for the new pan assembly.
Custom Shower Pan Construction
With the structural repairs complete, we moved into rebuilding the shower base. We installed a custom shower pan using a traditional liner-based method, which allowed us to create a properly sloped base tailored to the footprint of the shower.
This kind of assembly matters because the slope, liner placement, and final mud bed all have to work together for water to move to the drain instead of lingering inside the system. We used MAPEI 4 to 1 Mud Bed Mix for the mortar work — its fine aggregate makes it easier to shape and finish for proper drainage.
Tile Installation & Finish Work
After the base was rebuilt, we completed the finish work with 12×24 wall tile and mosaic floor tile. The larger wall tile gave the shower a cleaner, more contemporary look, while the mosaic floor was the right choice for following the slope of the pan and creating a more comfortable footing surface.
We also built a recessed wall niche so the homeowner would have practical storage without adding clutter or shelves that interrupt the tile lines. The result is a fully rebuilt shower that corrected the water damage, replaced the failed structural materials, and delivered a fresh, modern finish.
Project Gallery
From hidden water damage to a fully rebuilt, modern shower
Technical Standards & Materials
Industry-standard methods for a shower that is structurally sound and watertight
- ANSI A108.01 substrate preparation & general requirements
- ANSI A108.1B & A108.1C mortar-bed installation
- ANSI A108.5 tile installation standards
- ANSI A108.22 pre-mixed grout installation
- 1/4" per foot slope to drain per Oatey guidelines
- Flood testing before tile installation
- Custom liner-based shower pan system
- MAPEI 4 to 1 Mud Bed Mix — pre-slope & mortar bed
- 12×24 large-format porcelain wall tile
- Mosaic tile — shower floor
- Recessed wall niche for built-in storage
- MAPEI Flexcolor CQ grout — no-seal, stain-resistant
- Structural carpentry — plywood & 2×4 framing repair
The Results
This Arvada shower remodel solved a serious leak problem that had already caused hidden damage inside the bathroom. What began as a failing corner joint and loose tile turned into a full structural and waterproofing rebuild, which was the right decision once the extent of the rot was uncovered.
By the end of the project, the homeowner had a completely rebuilt shower with a new base, new tile, new wall niche, and restored framing below the surface. The shower now looks clean and modern, drains the way it should, and gives the client a reliable replacement for the damaged original installation.
What Arvada Clients Say
Mark & Susan P.
Arvada
“We knew our shower had a leak, but we had no idea how bad the damage was behind the walls. South Denver Tile Experts explained everything during demolition and rebuilt the shower from the ground up. It looks amazing and we finally have peace of mind that it’s done right.”
David R.
Arvada
“Our insurance claim covered the structural repairs, and the tile team handled everything from demo to the final tile. The custom shower pan, wall niche, and 12x24 tile made the finished shower look way better than the original. Highly recommend for any water damage situation.”
Frequently Asked Questions
Common questions about shower leak repair, structural damage, and custom shower rebuilds
Corners and changes of plane are common failure points in older showers because water movement and small assembly stresses tend to concentrate there. Once water gets past the tile surface repeatedly, it can migrate into the substrate and framing below, especially if the underlying waterproofing system is no longer intact.
A shower usually needs full reconstruction when demolition reveals hidden damage in the subfloor, framing, or base assembly. The subfloor must be structurally sound and waterproofing is only effective when it is properly supported, so once rot or instability is present, rebuilding the affected areas is often the right path.
It is a site-built shower floor made in layers rather than a one-piece prefab base. The traditional sequence is subfloor, pre-slope, liner, final mortar bed, and tile. That method is still a strong option when the pan is built correctly for the space and properly directed to the drain.
Because drainage has to be designed into the assembly, not left to chance. The pre-slope mortar layer must pitch at one-quarter inch per foot toward the drain so water can move in the right direction through the pan system.
Because tile and waterproofing systems depend on a stable structure underneath them. TCNA's current standards include general requirements for substrate preparation, and an unstable or defective subfloor can lead to failure in the shower system.
Mosaic tile is better suited to the contours of a sloped shower pan. The smaller pieces conform more easily around the drain area and help create a cleaner finish on the floor while also providing more grout joints for traction.
MAPEI states that its 4 to 1 Mud Bed Mix uses finely graded sand and Portland cement for thick-bed mortar installations and is ideal for floating shower bases. That kind of mix helps installers shape a dense, strong mud bed for a custom pan.
MAPEI says Flexcolor CQ is a ready-to-use grout with color-coated quartz that offers stain and chemical resistance, easy cleanability, crack resistance, and no sealing requirement. Those qualities are why many homeowners see it as a more durable, low-maintenance option than basic grout products. TCNA also lists ANSI A108.22 as the current installation standard for pre-mixed grout in tilework.
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