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Schluter Home Additions & ADU: The Orlando Owner’s Guide
If you’re planning an addition or ADU with Schluter waterproofing and uncoupling systems, the installed cost in Orlando typically runs $45,000 to $130,000 for a home addition and $90,000 to $220,000 for a full ADU, depending on square footage, foundation work, and finish level. We install Schluter products on every tile job we touch because Florida slabs move and humidity never quits. Most owners calling us about a “Schluter part” are usually mid-project with a failing install, or planning an addition and trying to price out the right systems before a single wall goes up.
Here’s the thing about Schluter in Orlando: the products are excellent, but they’re only as good as the substrate prep and the installer’s understanding of Florida’s specific moisture profile. We’re an independent contractor, not a Schluter dealer or affiliate, and we stock the core Schluter membranes, edge trims, and shower systems on our trucks because waiting a week for a KERDI band roll mid-renovation is how budgets silently inflate.
Key takeaways:
- Home additions and ADUs in Orlando using Schluter systems run $45,000 to $220,000 all-in, depending on scope.
- The most common Schluter “part failure” we see is actually membrane delamination from improper thin-set mix or skipping the flood test.
- Schluter edge trims are not universal – matching the profile height to your tile thickness is the compatibility gotcha most DIYers miss.
- We carry KERDI membrane, KERDI-BAND, DITRA underlayment, and common profile sizes on the truck.
- Written price before work starts, photo updates throughout, and a 365-Day Done Right Promise backing every install.
Which Schluter Models This Applies To
Schluter breaks its product line into a few families: KERDI (waterproofing membrane for showers and wet areas), DITRA (uncoupling underlayment for floors), DITRA-HEAT (heated floor systems), and the profile/trim lines (edge profiles, movement joints, and transitions). For a home addition or ADU in Orlando, you’ll typically need DITRA or DITRA-HEAT for bathrooms and kitchens, KERDI for any walk-in shower, and SCHIENE or Jolly edge profiles wherever tile meets another surface.
The identification mistake we see most often: someone buys a profile online by name without checking the profile height against their actual tile thickness. A SCHIENE that’s built for 3/8″ tile cannot be used with 1/4″ tile without a visible step. You’ll find the height code stamped on the aluminum or plastic profile itself (for example, “H 3/8″ or similar). We match that to your tile before ordering anything. For DITRA, the orange rolls are marked with the thickness – 1/8″ standard, 5/16” for DITRA-XL – and that thickness matters for floor transitions to adjacent flooring. In Orlando, we also recommend DITRA over any slab that’s less than 6 months old, because young concrete moves and cracks as it cures, and once tile cracks, repairing it in a finished addition costs more than the underlayment would have.
As for OEM vs. aftermarket: Schluter is its own ecosystem. The membranes have no meaningful aftermarket equivalent that performs the same function without changes to the install method. Profiles and trims? Generic metal trims exist all over Amazon, but the aluminum quality and the specific anchoring leg shapes are not the same. We use actual Schluter profiles on Schluter systems because a failing edge trim on a shower threshold is a water leak waiting to happen. If budget is tight, we’ll say so and give you an honest trade-off rather than hiding behind brand purism.
Styles & brands we work with
Signs Your Schluter Home Additions & ADU Is Failing
- Grout cracking in straight lines across the floor – This usually means the slab moved and there’s no uncoupling membrane underneath, or the DITRA was installed over a cracked slab without the required treatment. In Orlando’s clay-heavy soils, seasonal movement is real, and once cracks telegraph through the tile, the fix is a tear-out, not a grout touch-up.
- Musty smell from a bathroom wall or shower curb – Water is getting where it shouldn’t be. Either the KERDI seams weren’t lapped with KERDI-BAND correctly, or someone skipped the flood test before tile went up. By the time you smell it, the framing behind the membrane has been wet for months.
- Loose or lifting edge trim at a tile-to-floor transition – The profile’s anchoring leg was never properly set in thin-set, or the wrong profile height was used for the tile. A lifted Schluter edge trim becomes a trip hazard and a place for water to wick under the tile.
- Hollow-sounding tile when tapped – Thin-set wasn’t properly embedded, or it skinned over before the tile was placed. Florida heat does this: a hot garage slab in August will cause thin-set to flash-set fast. Hollow spots eventually crack or pop loose. In an addition or ADU, we see this most often when the tile was set in a hurry to hit a schedule.
- Water pooling in the shower pan instead of draining – The Schluter KERDI-DRAIN or linear drain was set too high, or the slope to the drain is off. In a new ADU bathroom, this is almost always an installer error, not a product defect. It means grinding out the pan and redoing the waterproofing.
See the difference
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After
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AfterReplacement Cost & What’s Included
The honest price picture for Orlando:
- Shower pan waterproofing redo (KERDI shower system, 36″ x 48″ typical): $4,500 to $12,000 installed, including tear-out, new pan, flood test, and tile.
- Bathroom floor DITRA layer with tile replacement (50-80 sq ft): $2,000 to $6,500, depending on whether we’re pulling the old floor or going over new construction.
- Full ADU with Schluter waterproofing in bathroom and floor systems: $90,000 to $220,000, driven by foundation type, size, and finish level.
- Home addition with Schluter systems (bathroom, kitchen floor, mudroom): $45,000 to $130,000.
What drives the range in Orlando specifically: whether we’re working on a raised wood subfloor (common in Winter Park and College Park bungalows from the 1940s) or a concrete slab (most post-1970 construction in MetroWest and Waterford Lakes). Slabs need crack-isolation and moisture testing. Wood subfloors need a second layer of plywood before DITRA. Both add labor. A flood test is required on every Schluter shower pan we install, and we photograph it before tile goes on. The 365-Day Done Right Promise means if the waterproofing or trim fails within a year, we make it right. The written price you approve is the price on the invoice. No change orders unless you change the scope.
DIY or Call Us?
If you’re mid-renovation and a Schluter part is missing or wrong, there are a few things you can safely check. First, compare the profile height stamped on the trim to your tile thickness. Second, look at the KERDI-BAND overlap – it needs to extend a full 2 inches over both seams, with thin-set squeezed out evenly. Third, if you’re planning an addition and pricing Schluter systems for the first time, read the installation handbook online before buying anything; it’s free and technical and it’ll save you from ordering the wrong DITRA thickness.
What you should not do: tear out a leaking shower pan yourself and try to salvage the framing. A wet stud cavity in a Florida bathroom with no ventilation has likely been growing mold behind the KERDI for months. That’s a removal and drying job before any new waterproofing goes in. Same applies to a failed DITRA floor over a young slab: pulling tile without fixing the underlying crack means the next tile job fails the same way. We’re the ones who find out what actually happened underneath. Call us at (850) 809-0306 and we’ll put eyes on it. The estimate’s free, and we’ll send a live arrival time before we show up.
FAQs
Installed correctly, KERDI and DITRA membranes will outlast the tile on top of them – realistically 25 to 50 years, because polyethylene doesn’t rot or degrade the way old-school hot-mop or PVC liners do. The failure point in Orlando isn’t the membrane; it’s the seams, the corners, and the installer’s thin-set coverage. That’s why every Schluter shower we build gets a 24-hour flood test before a single tile goes on.
Usually not. If the anchoring leg has pulled out of the thin-set, the profile is done – it needs to come out and a new one goes in, matched to the tile height. Re-gluing a lifted profile doesn’t work because the adhesive isn’t what failed; the original embedment failed. Call us at (850) 809-0306 and we’ll tell you over the phone if it’s worth a repair or a straight replacement.
A shower pan replacement with KERDI runs three to five working days: day one for demo and drying, day two for pan and membrane install, day three for flood test, day four for tile, day five for grout and silicone. A floor DITRA replacement is usually one to two days depending on size. We send photo updates before and after each day so you can see the work happening from your phone.
Yes. We keep KERDI membrane, KERDI-BAND, DITRA rolls in both standard and XL thickness, outside and inside corners, KERDI-DRAIN kits, and a range of edge profiles in the sizes we use most often for Orlando remodels. If we don’t have your exact profile height on the truck, we can typically get it from our supplier the next morning. For an exact quote on your addition or ADU, call (850) 809-0306 and we’ll walk you through it.
Good work doesn’t need a speech – it just needs to hold up. That’s how we’ve run Sawyer Remodel Orlando under Luca Romano since 2005 in the Orlando market, and it’s the standard we hold every Schluter install to, from College Park bungalows to new ADUs in Baldwin Park.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Orlando at Sawyer Remodel Orlando, serving Orlando and nearby areas.
