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Caesarstone Home Additions & ADU: The Fort Lauderdale Owner’s Guide
If you’re planning a home addition or ADU in Fort Lauderdale and want Caesarstone surfaces in the new kitchen, bath, or laundry, the installed project range runs $45,000 – $130,000 for the addition itself, with Caesarstone countertops typically adding $2,000 – $6,500 depending on square footage and edge profile. We work with Caesarstone quartz regularly on Fort Lauderdale additions and ADU builds, and we’ll walk you through what’s included: slab selection, templating, fabrication, install, and the written warranty on our labor. Most homeowners discover the need for this page during the planning phase, when a failed or delaminating countertop in the existing home either needs replacing before the addition ties in, or the new ADU design calls for a surface that can handle Florida humidity without warping, staining, or separating at the seams.
Which Caesarstone Models This Applies To
Caesarstone runs several lines, and not all slabs behave the same when cut, seam, or terminate against a new wall in a Fort Lauderdale addition. The Classic and Supernatural series include the workhorse colors most people choose for ADU kitchens and wet bars, and those slabs are consistently 2 cm or 3 cm thick. Outdoor kitchens are popular here, and that’s where the compatibility gotcha shows up: outdoor UV exposure voids the warranty on most Caesarstone colors. Only specific Outdoor series slabs are rated for full sun and rain, so if your ADU plan includes an outdoor cooktop or bar, the slab choice has to happen before the contract is signed, not after. The other spec issue we see is overhang support. Caesarstone allows up to 12 inches of unsupported overhang on 3 cm material, but only with the right substrate bracket. On a Fort Lauderdale build where a new island gets a 14-inch cantilever for bar seating, we add steel or formed corbels underneath, which changes the cabinet design early in the framing stage.
On the OEM versus aftermarket question: Caesarstone doesn’t sell “parts” in the traditional sense. The brand controls slab distribution and edge profile standards through certified fabricators. There are no legitimate generic replacement slabs that carry the same 25-year residential warranty. That means if a Caesarstone countertop in your existing home failed and you’re tying that room into a new addition, the replacement slab needs to come from Caesarstone supply channels, not a warehouse clearance rack. We source through Caesarstone directly, which keeps the color batch consistent if you’re matching an existing surface.
Styles & brands we work with
Signs Your Caesarstone Home Additions & ADU Is Failing
- Seam separation at the addition tie-in point: When an old home meets a new addition, the original structure settles differently than the new framing for the first 12 to 18 months. A Caesarstone seam that was tight on day one can open up by a sixteenth of an inch once the Fort Lauderdale clay soil expands and contracts through a full wet season. This is a structural movement problem, not a slab failure, but it needs to be addressed before the seam collects water and degrades the adhesive.
- Chalky or dull patches that won’t polish back: Caesarstone is roughly 90% quartz, and the resin binder is what gives it the gloss. Harsh alkaline cleaners or prolonged direct sun through a south-facing Fort Lauderdale window can etch that resin layer. Once the resin is compromised, no amount of buffing restores it. This most often shows up on ADU kitchen counters installed under skylights or in rooms with 10-foot glass sliders.
- Hairline cracks radiating from a sink cutout: The weakest point on any Caesarstone countertop is the narrow strip between the sink basin and the front edge. If the original install didn’t include proper support rails, or if an undermount sink was fitted without a reinforced rim, that strip carries more weight than it was rated for. Add the vibration from a Fort Lauderdale garbage disposal that’s been running for four years, and the crack starts small and walks outward.
- Water staining or darkening along the backsplash joint: Caesarstone itself is non-porous, but the silicone joint between the slab and the tile backsplash is not. Once that seal fails, humidity from the Fort Lauderdale air pushes moisture behind the slab edge and darkens the caulk line. The fix is a clean scrape and fresh silicone, but if the underlying drywall is soft, the repair becomes a small drywall job too.
- Warping or flex at an unsupported overhang: On 2 cm Caesarstone, an overhang beyond 8 inches without brackets will flex visibly when someone leans on it. We’ve measured 3/16-inch deflection on a breakfast bar in a Fort Lauderdale ADU where the original installers skipped the corbels. That flex eventually cracks the slab at the cabinet edge.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
A full Caesarstone countertop replacement in a Fort Lauderdale kitchen runs $2,000 – $6,500 installed, and that range breaks down by square footage, edge profile, and whether we’re pulling the old slab or working over new cabinetry in an addition. Entry-level Classic series slabs in standard colors with a straight edge come in at the low end. Supernatural series colors, waterfall islands, or mitered edges that make the slab look twice as thick push toward the high end. The bigger number on this page, the $45,000 – $130,000 for the home addition or ADU overall, includes framing, drywall, electrical, plumbing, flooring, and finishes, with the Caesarstone as a named line item so the invoice matches the estimate exactly. Labor to remove and dispose of a failed slab runs $400 – $900 depending on access. Our written price covers the slab, fabrication, install, and a one-year workmanship warranty. If a seam opens in that first year under normal use, we fix it under the 365-Day Done Right Promise, no charge, no argument.
DIY or Call Us?
You can safely check the obvious things yourself: run a finger along the seam to feel for a lip, pour a small puddle of water on the surface and see if it beads or sheets, and look underneath the overhang for missing brackets. What you shouldn’t do is attempt a Caesarstone repair. Quartz slabs are 120 to 140 pounds per linear foot on a standard island, and a cracked piece under tension can snap without warning during removal. The resin adhesives used for Caesarstone color-matching also require controlled cure times and exact color tints; a mismatched patch looks worse than the crack. When you’re ready, call (754) 354-7423. We’ll send a background-checked technician with the right lifting equipment and the Caesarstone sample book, and you’ll get a written price before anything gets cut.
FAQs
Caesarstone carries a lifetime warranty for residential interior use, and in practice the slab will outlast the cabinetry under it, even in Florida humidity. The failure points in a Fort Lauderdale addition are usually the seams, the silicone joints, and the support brackets, not the quartz itself. With proper installation and basic care, expect 20 to 30 years of usable life before you consider replacing it for style reasons rather than failure. Call (754) 354-7423 for a free site assessment if your slab is showing age-related issues.
Yes, a hairline crack can be color-matched and filled with quartz-specific epoxy if the underlying cause is fixed first. If the crack came from a missing support bracket or slab flex, the repair will re-crack within months unless the support is added. For cracks radiating from sink cutouts or overhangs, replacement is usually the smarter money. Call us at (754) 354-7423 and we’ll tell you honestly which route makes sense for your specific slab.
From template to installed slab is typically 10 to 14 days. Templating happens first, then the slab is fabricated, then install takes one day for a standard kitchen. For a home addition where we’re also setting new cabinetry, the countertop install is sequenced near the end of the project, after the wall finishes and before the backsplash goes in. We’ll put the exact dates in writing before work starts so you’re not guessing.
We don’t warehouse full slabs ourselves; instead we order your exact color and finish directly from Caesarstone’s distribution channel, which means the slab arrives at our fabricator within days, not weeks. We also work with Cambria, Silestone, and KraftMaid cabinetry on the same projects, so if you’re matching an existing surface or mixing brands between rooms, we can coordinate it all. Call (754) 354-7423 to schedule your free estimate and slab selection walkthrough.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Fort Lauderdale at Sawyer Remodel Fort Lauderdale, serving Fort Lauderdale and nearby areas.
