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IKO Bathroom Remodeling: The San Jose Owner’s Guide
If you have an IKO product in your bathroom and something’s failing, you’re probably trying to figure out whether to repair the piece or pull the whole thing out. A full bathroom remodel in San Jose typically runs $10,620 – $33,040 depending on square footage, fixture choices, and what’s hiding behind the walls. Most owners discover a failing IKO component either through visible water staining on the ceiling below, grout that won’t stay sealed, or a shower pan that’s started to flex underfoot. The part itself may be a specific tile line, a backer board, or a shower base, but the failure tends to show up the same way: water finds a way through, and what started as a cosmetic annoyance becomes a subfloor problem faster than you’d think.
We’re an independent San Jose remodeling contractor, not a factory service center for IKO. That means we repair and replace IKO-related bathroom components using compatible materials and current code, and we give you a written price before we pull anything apart.
Which IKO Models This Applies To
IKO makes a broad range of building products, and in a bathroom context that usually means waterproofing membranes, backer boards, and underlayment rather than a finished fixture you can point to. The compatibility question matters because not every IKO waterproofing product plays well with every tile adhesive. In San Jose homes built between the late 1990s and the mid-2010s, we frequently run into IKO’s fiberglass-reinforced waterproofing membranes under shower floors and around tub surrounds. The older installations used a thinner membrane that doesn’t accept modified thinset the way today’s products do.
If you’re not sure what you have, check for a printed label on the membrane edge or on the backer board face before it gets buried. If the label’s gone, the tell is usually visual: the older IKO membrane has a pebbled surface texture with visible fiberglass strands, where newer compatible membranes from Schluter or Laticrete look smoother and just feel different under a fingernail. For an IKO-specific repair, we match OEM product when it’s still manufactured and the local San Jose supplier network carries it. When OEM isn’t available (which happens more now than five years ago), we use an aftermarket equivalent that meets the same waterproofing standard, and we note it on the written quote so there’s no surprise.
Styles & brands we work with
Signs Your IKO Bathroom Remodeling Is Failing
- Water staining on the ceiling below the bathroom. This is the classic one. By the time you see it, the membrane has already been compromised for a while. The stain usually shows up as a coffee-colored ring, and it means water has traveled through the IKO layer and into the subfloor.
- Grout that keeps cracking, even after re-grouting. If you’ve had the grout redone and it cracked again within a year, the problem isn’t the grout. The substrate (the layer under your tile) is moving, and that movement usually starts with a failing waterproofing layer or a shower pan that’s lost its rigidity.
- A shower floor that flexes or creaks when you stand on it. A properly installed shower pan doesn’t move. If yours does, the IKO underlayment or the pan itself has separated from the subfloor. Standing water pools in low spots, then seeps through seams that have opened up.
- Peeling paint or bubbling drywall on the lower walls or baseboards. Water wicks upward from a failing pan or membrane. The paint failure happens a foot or two off the floor, and it shows up first on the wall closest to the shower valve.
- A persistent musty smell that won’t go away even after cleaning. That smell is mold growing in the dark, damp space behind your tile or under your pan. In San Jose’s mild climate, the humid bathroom air gives mold plenty of time to establish itself, and no amount of surface cleaning will reach the source.
See the difference
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AfterReplacement Cost & What’s Included
A bathroom remodel in San Jose runs $10,620 – $33,040. The spread comes down to three things: the size of the bathroom, what you choose for tile and fixtures, and how much water damage we find once the old surface comes off. A smaller bathroom with a fiberglass pan and basic tile lands at the lower end. A larger primary bath with a custom walk-in shower, a free-standing tub, and mid-range fixtures pushes toward the top.
Here’s how the math typically breaks down in San Jose:
- Demolition and disposal: $1,500 – $3,500 depending on what’s being pulled and how much tile there is.
- Waterproofing and substrate (the IKO-compatible layer): $1,800 – $4,200 including membrane, backer board, and the labor to seal seams and corners properly.
- Tile installation (shower or tub surround, floor): $3,000 – $9,500 depending on tile choice and pattern.
- Shower pan or tub: $800 – $3,500 depending on whether it’s a prefabricated pan, a poured mortar bed, or a tub and surround replacement.
- Fixtures (valve, trim, shower head, drain): $350 – $1,500 if we’re using Kohler or Moen lines.
- Vanity replacement: $945 – $3,540 installed when it’s part of a larger remodel.
Every quote we give in San Jose is written, itemized, and fixed before work starts. If we open the wall and find rotted framing from a failed IKO layer, we’ll tell you, show you, and give you a written change order before we proceed. You never pay for surprise work you didn’t approve. The work itself carries the 365-Day Done Right Promise: if something we installed fails inside a year, we come back and fix it at no charge.
DIY or Call Us?
Here’s the honest split. You can safely check a few things yourself: look for visible staining on ceilings and baseboards, check whether your shower pan flexes, and check the grout lines for hairline cracks. That tells you whether you have a problem. What you shouldn’t do is start pulling tile off a shower wall to “see what’s going on” behind it. Once you break the waterproofing layer, you’ve created a bigger leak than the one you were trying to find, and a DYI patch over a failing membrane is temporary at best.
The part of this job that matters most is the waterproofing layer under the tile, and that’s not a place to guess. In older San Jose homes, we’ve pulled apart showers where someone had caulked over failing grout for years, and the subfloor had turned to sponge. Each extra week adds cost. If you suspect your IKO waterproofing has failed, call us at (669) 274-2362. We’ll walk through what you’re seeing and give you a straight answer about whether it’s a repair or a remodel.
FAQs
Properly installed IKO waterproofing typically lasts 15 – 25 years in San Jose’s climate, but the failure point isn’t usually the membrane itself – it’s the seams and corners, which fail sooner if the original installer didn’t seal them correctly. We see seam failures show up at around the 10 – 12 year mark in showers that get daily use.
Yes, if the damage is isolated to a single seam or a small puncture and the surrounding substrate is still solid. A patch repair costs $470 – $2,125 in San Jose depending on access. If the subfloor is water-damaged or the membrane is separating across a wide area, patching won’t hold, and you’re better off pulling and replacing the waterproofing layer as part of a remodel. Call (669) 274-2362 and we’ll tell you which situation you’re in.
A typical San Jose bathroom remodel takes 2 – 4 weeks from demo to final fixture trim. The biggest variable is the tile work – a basic 5-by-8 bathroom with a tub surround might finish in two weeks, while a larger primary bath with a custom walk-in shower and floor-to-ceiling tile can run four weeks.
We stock common waterproofing membranes, backer boards, sealants, and drain assemblies on our San Jose trucks, so a standard repair doesn’t wait on a supplier run. If your job needs a specific IKO product that isn’t in our standard inventory, our suppliers in San Jose can typically deliver to the job site within one to two business days. We also work regularly with KraftMaid, Cambria, and Silestone for the finish materials that go into the same bathrooms.
Written by Trevor Nash, Owner, Penhallow Remodeling San Jose at Penhallow Remodeling San Jose, serving San Jose and nearby areas.
