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Schluter Home Additions & ADU: The West Palm Beach Owner’s Guide
Home additions and ADUs built with Schluter waterproofing and uncoupling systems in West Palm Beach typically run $45,000 – $130,000 installed, depending on square footage, foundation work, and the specific Schluter membranes specified for our humidity and water-table conditions. Most owners discover a Schluter-related failure the same way: a cracked tile at the addition’s transition point, efflorescence blooming along the baseboard, or a musty smell in the new space that won’t go away. The Schluter part itself rarely fails as a standalone component. What fails is the installation detail around it, or the substrate movement beneath it. We carry Schluter DITRA, DITRA-HEAT, KERDI-BOARD, and KERDI-BAND on the truck for repair and new construction, and we match the existing system rather than patching with whatever is on the shelf.
Key Takeaways:
- Home addition with Schluter systems: $45,000 – $130,000 in West Palm Beach
- ADU construction: $90,000 – $220,000, including Schluter waterproofing and uncoupling as specified
- We stock Schluter DITRA, KERDI, and KERDI-BOARD for repairs and full builds
- Written price before work starts, every time, no exceptions
- 365-Day Done Right Promise: if it fails within a year, we return and fix it at no charge
Which Schluter Models This Applies To
Schluter’s product line for additions and ADUs spans three families that matter most in West Palm Beach: the DITRA uncoupling membranes (DITRA, DITRA-XL, DITRA-HEAT, DITRA-HEAT-DUO), the KERDI waterproofing line (KERDI-BOARD, KERDI-BAND, KERDI-SHOWER kits), and the trim profiles (SCHIENE, RONDEC, QUADEC, DECO) that finish transitions and edges. The compatibility gotcha most owners miss: DITRA-XL is not a universal upgrade. It’s engineered for tile thickness variations and specific substrate conditions. If your addition sits on a slab with a high water table or known moisture vapor transmission, you need the right membrane rated for that condition, not whatever the last job used. Every Schluter roll and board carries a printed model number and lot code on the edge. Match that before anything gets cut.
We spec OEM Schluter for waterproofing and uncoupling applications because the warranty and the system certification ride on it. Aftermarket equivalents exist, and some are serviceable for trim and edge profiles, but the sheet membranes and KERDI-BOARD are not where you save money. The cost difference gets eaten by callbacks. Bradford Remodeling Co West Palm Beach is an independent contractor, not affiliated with Schluter Systems, which means we install to the manufacturer’s published specifications and stand behind our own written guarantee on top of that.
Styles & brands we work with
Signs Your Schluter Home Additions & ADU Is Failing
- Loose or drummy tile at the transition between old and new construction. The addition’s slab and the original slab move at different rates in South Florida’s expansive soils. If the DITRA wasn’t carried continuously across that joint, the tile shears at exactly that line.
- Dark staining or mold odor at the base of new walls. KERDI-BAND overlapping the wall-to-floor junction is what keeps shower and wet-area water in. A skipped overlap or a drywall screw driven through the membrane creates a slow leak you’ll smell before you see.
- Grout cracking in a straight line across the floor. This is usually substrate movement. DITRA is designed to absorb lateral stress, but only if the substrate itself was stable before the membrane went down.
- Water stains on the ceiling below a second-story addition bathroom. The KERDI system failed at a penetration, typically the drain or the curb. By the time the stain shows, the damage is already done.
- Efflorescence or mineral deposits on the slab edge. Moisture is wicking up through the concrete. If the slab wasn’t tested for moisture vapor emission before tile went down, the Schluter system becomes the last line of defense instead of part of a proper assembly.
See the difference
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After
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After
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AfterReplacement Cost & What’s Included
For a West Palm Beach home addition or ADU built around Schluter systems, the math starts at the number that matters: $45,000 – $130,000 for an addition, and $90,000 – $220,000 for a detached ADU built to code. What drives the spread is the foundation type (slab-on-grade versus elevated), the square footage, the complexity of the waterproofing scope (a full wet-room bathroom costs more than a dry living space), and whether we’re tying into existing plumbing and electrical or running new lines from the street. A failed Schluter repair, by contrast, is often a $2,000 – $6,500 job depending on how much tile has to come up and how much substrate remediation is required.
Every quote from Bradford Remodeling Co West Palm Beach includes parts, labor, haul-off, and the written guarantee, priced before we start and locked. No change orders appear after the fact. Curtis Lane reviews the scope himself before the crew shows up. If the number changes in the field, you get a call first. That’s the Garrison Standard, and it’s how we’ve run work since joining the Garrison Partners family in 2004.
| Schluter-Related Scope | West Palm Beach Installed Range |
|---|---|
| Home addition (Schluter systems specified) | $45,000 – $130,000 |
| ADU construction (full build, Schluter waterproofing) | $90,000 – $220,000 |
| Failed membrane repair (tile removal, remediation, reinstall) | $2,000 – $6,500 |
| Transition crack repair (floor jack, substrate fix, DITRA reinstall) | $1,500 – $4,000 |
DIY or Call Us?
You can check a few things yourself without much risk. Pull a loose tile and look at the imprint on the face of the membrane. Check whether the KERDI-BAND laps the correct direction at corners. Look for screws or nails driven through any orange surface, because Schluter membranes are not nail-safe. What you should not do is attempt to cut out and replace a section of failed membrane on your own. The waterproofing continuity of a Schluter system depends on overlaps and bond strength that require proper thinset coverage, substrate prep, and flood-testing afterward. A patch that looks fine but is not bonded correctly will fail in weeks, and you’ll pay for the same repair twice.
If you’re in West Palm Beach and you’ve got a Schluter addition or ADU with a suspected failure, call (728) 203-9809. We’ll send a uniformed, background-checked technician to assess it, and you’ll get a written number before any work starts.
FAQs
A properly installed Schluter system should last the life of the tile assembly, which in West Palm Beach’s humidity and soil conditions realistically means 20 – 40 years before substrate movement or wear forces a rework. The membrane itself doesn’t rot, but the system is only as good as the slab beneath it. Call (728) 203-9809 for an assessment if you’re seeing cracks or stains.
Small penetrations and seam failures can often be repaired by peeling back the affected area, installing a new KERDI-BAND overlap, and flood-testing the zone. Larger sheet failures or substrate problems require full removal and reinstallation of the affected section. We’ll tell you which one you have before we quote anything.
Most membrane repairs take two to three days, including demolition, substrate prep, membrane installation, thin-set cure time, and tile reinstatement. Full wet-area rebuilds run five to seven days. We schedule the work in a single block so you’re not waiting on crews between phases.
Yes. Our West Palm Beach crews carry DITRA, DITRA-HEAT, KERDI-BOARD, KERDI-BAND, and common trim profiles on the truck for repair work and additions. We also stock KraftMaid cabinetry, Cambria surfaces, and Silestone for the finished side of the addition, so specifications stay traceable end to end. Call (728) 203-9809 for a free estimate.
Straight number, full scope, no surprises after the invoice.
Written by Curtis Lane, Owner, Bradford Remodeling Co – West Palm Beach at Bradford Remodeling Co West Palm Beach, serving West Palm Beach and nearby areas.
