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IKO Bathroom Remodeling: The San Jose Owner’s Guide
IKO bathroom remodeling in San Jose typically runs $10,620 – $33,040 for a full gut-and-replace, and Bradford Remodeling Co San Jose handles the complete job: demolition, rough-in, waterproofing, tile, fixtures, and finish work. We install IKO-compatible substrates and waterproofing systems as part of a documented scope with a written price before any tool comes out. Most San Jose homeowners find us because they’ve spotted water staining at the base of a tub surround, soft grout lines, or a cracked flange around the drain, and they want to know whether the remodel can be saved or needs to go back to the studs.
Here’s what you need to know about IKO bathroom systems in San Jose, what fails first, what it costs to replace, and what we do differently.
Which IKO Models This Applies To
IKO manufactures bathroom-grade waterproofing membranes, backer boards, and underlayments used under tile in tub surrounds, shower pans, and bathroom floors. The two product lines we see most often in San Jose homes are the IKO AquaBarrier series (self-adhered sheet membrane) and IKO’s cement-based backer units sold through regional supply houses. Most failures we walk into are not the IKO product itself; they’re the seams, the corners, or the transition where the membrane meets the tub flange or shower pan. That’s where water gets in, and that’s where the reinstalled system either holds for 20 years or fails in three.
Identifying what’s in your bathroom matters. If the original install used a self-adhered membrane, you’ll usually see a smooth, dark sheet with printed grid lines once the tile comes off. Cement backer looks like gray board with fiberglass mesh. The compatibility gotcha in San Jose: older ranch homes in Willow Glen and Cambrian often have out-of-level subfloors and 1/4-inch out-of-square walls, which means the membrane must be installed with corner reinforcement strips and a leveling bed under the pan. Skip that prep and the new tile grout starts cracking within a year. We document the substrate condition in writing before we order materials, because guessing at what’s behind the tile is how remodels go sideways.
For replacement work, we use IKO-compatible membranes or equivalent specification-grade products, not whatever is cheapest at the supply counter. OEM versus aftermarket matters less for membranes than for mechanical parts, but the spec rating does matter: we install only products rated for continuous water exposure and compatible with thin-set mortars specified by the tile manufacturer. Bradford Remodeling Co San Jose is an independent contractor; we are not affiliated with or endorsed by IKO.
Styles & brands we work with
Signs Your IKO Bathroom Remodeling Is Failing
- Water staining or efflorescence at the base of the tub or shower surround. White mineral deposits mean water has been traveling behind the tile for weeks or months. The membrane seam at the tub flange is the usual suspect.
- Loose or hollow-sounding tiles. Tap the tile face lightly. A dull thud means the thin-set is still bonded; a hollow knock means moisture has broken the bond and the tile is floating on the membrane.
- Dark grout lines that won’t clean or stay dark after scrubbing. Persistent darkening is not cosmetic. Water is wicking through failed grout and feeding mold in the substrate below.
- Musty odor that returns days after cleaning. A bathroom that smells like a damp crawlspace after you’ve cleaned every surface usually means the framing behind the tile is holding moisture.
- Cracked caulk joints around the tub, pan, or curb. Caulk is the last line of defense, not the first. When it cracks and pulls away, water gets behind the tile and the process accelerates.
If you see one of these signs, the fix is not more caulk. By the time the symptom shows on the surface, the damage behind the wall has been building for a while. In San Jose’s climate with its seasonal humidity shifts and hard water, we see this cycle year-round.
See the difference
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After
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AfterReplacement Cost & What’s Included
In San Jose, a full IKO bathroom remodel runs $10,620 – $33,040 installed. Here’s how that range breaks down:
- Full bathroom remodel: $10,620 – $33,040 (complete gut, new waterproofing, tile, fixtures, vanity, lighting)
- Small bathroom remodel: $5,900 – $14,160 (powder room, guest bath, or compact 5×7 layout)
- Walk-in shower installation: $5,310 – $14,160 (pan, membrane, tile walls, glass enclosure)
- Tub-to-shower conversion: $4,130 – $11,800 (remove tub, install pan and surround, all waterproofing)
- Shower replacement: $3,540 – $10,030 (swap existing shower, keep footprint)
- Bathroom vanity installation: $945 – $3,540 (new vanity, top, faucet, and drain hookup)
Every line item above includes demolition, haul-away, substrate repair, waterproofing, and finish work. The range exists because a 40-square-foot shower in a Willow Glen ranch is a different job than an 80-square-foot master bath in Almaden Valley with a custom pan and three body jets. What drives the number: the size of the wet area, the condition of the subfloor and framing once we open the wall, and the tile and fixture selections.
What does not change is the price once it’s written. Every Bradford Remodeling Co San Jose project gets a written scope and a fixed price before we start. No change orders because we “found something” behind the tile. If the subfloor is rotten, we tell you what it costs to fix it and you approve it in writing before we touch it. That’s The Garrison Standard: write it down, stick to it, stand behind it. And every completed bathroom remodel carries the 365-Day Done Right Promise in writing. If anything fails inside that year, we come back and correct it at no charge.
DIY or Call Us?
You can safely do this much: inspect the caulk joints and grout lines, check for visible staining at the tub base, and tap tiles to find hollow spots. That tells you whether you have a problem and roughly how big it is.
What you should not do is peel back tile, cut into the membrane, or try to patch a leaking shower pan yourself. Once the waterproofing layer is compromised, a patch job traps moisture behind it and makes the eventual repair worse and more expensive. The danger here is not dramatic; it’s slow and structural. Water that sits in the subfloor and framing rots the joists that hold your bathroom up. In a San Jose ranch, that’s a repair that goes well past the bathroom.
If your IKO bathroom system is showing signs of failure, call us at (669) 272-2637. We’ll send a background-checked, uniformed technician to assess the damage, give you a written price, and tell you straight whether this is a repair or a full remodel. No sales pitch, no scare tactics. Straight number, written scope, done when we said done.
FAQs
A properly installed IKO or equivalent waterproofing membrane in a San Jose bathroom lasts 20 – 30 years under normal use. What fails first is almost always the installation, not the product: seams that weren’t reinforced, corners that were cut, or prep work that was skipped on an out-of-level subfloor. That’s why we document the substrate before we install anything. Call (669) 272-2637 for a free estimate and we’ll tell you what’s actually behind your tile.
Sometimes, yes. If the membrane has failed in one corner or along one seam and the surrounding substrate is still dry and sound, we can patch and retile that section. But most of the time, by the time water shows on the surface, the damage runs wider than the visible stain. We’ll open it up, show you what’s there, and let you decide. Estimates are free, and the price stays where we wrote it.
Plan for 10 – 20 working days for a full remodel, depending on the size of the wet area, the tile schedule, and whether permits are required. A tub-to-shower conversion typically runs 7 – 12 working days. We provide a written schedule with the scope, and we tell you the day we finish before we start. Call (669) 272-2637 with your details and we’ll give you a real timeline.
Our crews carry standard IKO-compatible waterproofing membranes, seam tape, corner reinforcement, and thin-set on every bathroom job. If your remodel requires a specialty spec product, we order it from our supply partners in San Jose and schedule the install around delivery, so there’s no surprise delay at the rough-in stage. We also work with documented brand materials across the rest of the bathroom: Kohler and Moen fixtures, KraftMaid cabinetry, and Cambria or Silestone surfaces.
Written by Curtis Lane, Owner, Bradford Remodeling Co at Bradford Remodeling Co San Jose, serving San Jose and nearby areas.
