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IKO Bathroom Remodeling: The Los Angeles Owner’s Guide
IKO built a reputation on waterproofing done right, but the materials behind your tile wall or under your shower pan age, crack, and shift like anything else. When an IKO membrane, drain assembly, or shower base fails inside a Los Angeles bathroom, the fix typically runs from $10,620 to $33,040 installed, depending on how far the water traveled and whether the substrate needs full replacement. You usually discover the problem the hard way: a soft spot in the floor outside the shower, a musty smell you can’t air out, or a water stain blooming on the ceiling below.
We see this in Los Angeles homes built from the 1980s through the early 2000s. The original IKO waterproofing, often paired with mortar beds and tile, gave out not because it was a bad product but because decades of shower chemicals, temperature swings, and the slow flex of a wood-framed house finally cracked the membrane or separated the seams. By the time you notice the stain, the failure underneath has usually been running for months. The good news is this is a known problem with a known fix, and we walk you through the pricing before any hammer hits tile.
Which IKO Models This Applies To
If you’re holding IKO materials or have the original build paperwork, look for their shower waterproofing membranes, drain systems, and pre-sloped shower bases. The most common installations we encounter in Los Angeles bathrooms are sheet membranes applied over sloped mortar beds, with a two-part clamping drain assembly at the center. IKO’s residential shower systems were built in standard sizes, but earlier installs ran into a compatibility gotcha we still handle regularly: membranes installed over plywood substrates without proper priming delaminate faster, especially in older bathrooms near the coast where humidity cycles are more aggressive.
Identifying what you have matters because the fix is different depending on which part failed. The membrane itself gets replaced when the leak is under the tile. The drain assembly gets swapped when the weep holes clog or the clamping ring cracks. The shower base gets replaced when the pre-slope was wrong the first time, which is depressingly common in Los Angeles remodels from the boom years. For IKO-branded parts specifically, the OEM components are no longer widely stocked at local supply houses, so we match the existing footprint to current code-compliant equivalents, from brands with the same dimensional specs. When we source a replacement, the written quote tells you exactly what we are installing, including brand and part number, before we start. We are an independent remodeling contractor and not affiliated with IKO; we handle their legacy installations because homeowners get stuck when the original manufacturer has moved on from the line.
Styles & brands we work with
Signs Your IKO Bathroom Remodeling Is Failing
- Water stains on the ceiling below the bathroom. This is the number-one call we get. The IKO membrane has a seam separation, and water is migrating through the subfloor. The stain is the visible end of a leak that started months earlier.
- The shower floor feels soft or flexes underfoot. Dead giveaway that the substrate has rotted. Water sat under the tile long enough to break down the mortar bed or the plywood beneath it. Walking over a soft spot can punch through to the joists, so stay off it and call.
- Musty smell that comes back after cleaning. Mold is growing in the dark, damp cavity under the tile. In Los Angeles, a bathroom that stays wet inside the walls will smell even during dry stretches. Air freshener doesn’t reach the source.
- Tile grout cracks reappearing around the drain or wall corners. Grout isn’t waterproof. When you see recurring cracks in the same spots, the substrate is moving, which flexes the waterproofing layer beneath. If the membrane tears, the leak starts behind the tile where you can’t see it.
- Water pooling around the drain instead of flowing toward it. The pre-slope under the membrane was never pitched correctly, or it settled. Standing water against the drain body eventually works its way past the clamping ring and into the framing below.
See the difference
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After
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After
Before
AfterReplacement Cost & What’s Included
In Los Angeles, IKO bathroom remodeling replacement work starts around $10,620 for a focused shower membrane and tile rebuild, and runs to $33,040 or more when the water damage spread to the subfloor, surrounding walls, or the ceiling below. Mid-range projects, where the shower floor, membrane, drain, and bottom two feet of wall tile come out, usually land between $14,000 and $18,500.
What drives the number up is the extent of structural repair. A simple membrane swap over a clean, solid slope runs on the lower end. If the water got into the studs, we pull the wall board, sister the framing, and rebuild. We give you a written price before work begins, itemized by line. You’ll see what’s parts, what’s labor, and what’s structural repair. The price we hand you is the price on the final invoice. And every IKO bathroom repair we do in Los Angeles carries the Penhallow 365-Day Done Right Promise: if something fails within a year, we come back and fix it at no charge.
DIY or Call Us?
You can safely check a few things yourself: mark the stain on the ceiling with a pencil and see if it grows after a week, look for gaps in the tile grout where walls meet the floor, and confirm the shower is dry before anyone uses it again. Stopping the water is always the right first move.
What you shouldn’t do is cut into the tile to “find” the leak. By the time you see water damage, the waterproofing layer has already failed, and open exploratory demolition without a written plan usually doubles the final repair cost. The materials you’d pull out are bonded together, and the dust generated by cutting shower tile and old cement board isn’t something to breathe without proper containment. Our background-checked and uniformed crew handles the demolition, the structural inspection, and the rebuild in sequence. If you’re in Los Angeles and you’ve got a failing IKO shower, call (213) 277-6578 for a free estimate. Give you a number first, then pick up the tools.
FAQs
In a properly built shower, the IKO membrane typically lasts 15 to 25 years, but most failures we see in Los Angeles happen at the 12-18 year mark because of installation issues, not product fatigue. Seam separations, unprimed substrates, and cracked clamping rings account for the majority of the failures we uncover. Call (213) 277-6578 for a free inspection if you’re seeing signs of water getting past the membrane.
In our experience, the answer is no, not reliably. If we catch a leak early and it’s isolated to a corner seam, a spot repair can buy you a few years, but Los Angeles’s humidity swings and daily shower use put constant stress on the patch. Most IKO failures we see involve rot behind the tile by the time water shows up on the ceiling or floor, and those jobs require full removal and rebuild. Call (213) 277-6578 and we will tell you honestly which situation you have.
Most IKO shower rebuilds in Los Angeles take 4 to 9 working days from the first hammer swing to the final grout seal. Structural repairs to framing or subfloor add time. We schedule the work in consecutive days where possible and tell you the arrival window before the job starts.
No one stocks legacy IKO bathroom parts in Los Angeles consistently, because the residential line has been out of production for years. What we stock on the truck are the current code-compliant equivalents: modern sheet membranes from recognized trade brands, clamping drains sized to the existing footprint, and the fasteners and primers required by the new system. In the same way we install KraftMaid and Cambria products in remodel projects elsewhere in the house, we use Silestone when countertops are part of the bathroom scope, we match the replacement parts to known, warrantied manufacturers. You get a written list of every part before we order it.
Written by Trevor Nash, Owner, Penhallow Remodeling Los Angeles at Penhallow Remodeling Los Angeles, serving Los Angeles and nearby areas.
