Shower Pan Leak Detection & Repair in Arvada, CO

What the Pan Is and Why Its Failure Is Different

Beneath a tiled shower floor lies a waterproof membrane, hot-mopped, sheet liner, or modern bonded systems depending on era, sloped to a weep-equipped drain. Tile and grout above it are decorative armor, not the waterproofing. The pan is the waterproofing. When it fails, water reaches framing on every use, and no amount of grout work above can matter.

That is why pan repair is categorically different from the rest of shower work: the floor assembly comes out and gets rebuilt. The severity of that answer is exactly why the diagnosis must be procedural rather than impressionistic.

Running the Flood Test Properly

Done right, the test controls its variables. The drain seals with an inflatable plug below the weep holes, and the floor fills to just under the curb. The level gets marked and photographed. Then the watch runs long enough to be meaningful while moisture instruments monitor the ceiling or cavity below. A dropping level with a sealed drain, or wetting below during a static fill, convicts the pan. A rock-steady level acquits it and sends the investigation back up the wall.

Half our flood tests acquit. That statistic is the whole argument for testing first, and it is a sentence worth repeating to any contractor whose diagnosis starts with a demolition quote.

Drain Connection Versus Liner: Two Different Convictions

A failed pan splits into two repair scales. When the leak lives at the drain assembly, the clamping ring, the weep holes, the connection between membrane and drain body, the rebuild can sometimes stay local to the drain area. When the liner itself has perforated, split corner folds, a screw through the membrane from some past remodel, plain dry-rot age, the honest repair is the full pan. That means demo to the subfloor and a new membrane, properly sloped and flood-tested bare before a single tile returns.

In the nineties-era builds around Whisper Creek, a specific vintage of sheet-liner installs is reaching corner-fold failure age together. The older mud-pan showers in mid-century Arvada, by contrast, often outlast the tile above them. Era guides suspicion, but the test still decides.

Rebuilds That Will Pass Their Own Test

A pan we build gets flood-tested naked, before tile, with photos of the held water line in your file. Slope runs true to the drain, weep holes stay open under a proper gravel or spacer bed, curbs get membrane over their tops, and penetrations are sealed as the system maker specifies. Modern bonded-membrane systems have made excellent pans easier to build, and we use them where they fit the assembly.

Coordination is part of the service. Where your tile setter handles the finish, our scope ends at a tested, documented pan they can build on, and the interface gets agreed in writing so nothing falls between trades.

Signals That Should Trigger the Test

A ceiling mark below that grows with shower length. Tile at the floor perimeter that sounds hollow or lifts. A persistent musty note in the bathroom that cleaning never beats. Baseboard swelling on the wall behind the shower. Any of these justifies the procedure, especially in a house with a second-floor bath over living space. The upstream disguises, valve, arm, and splash, get cleared first in the same visit, following the sequence on our shower leak page. Stubborn cases that outlast both pages escalate to the full bathroom investigation. The test itself schedules at (303) 552-3896.

Shower Pan Questions Before the Tile Opens