Unilock Bathroom Remodeling Nationwide

Unilock Bathroom Remodeling: The San Jose Owner’s Guide

Unilock bathroom remodeling in San Jose typically runs $10,620 to $33,040 for a full project, with smaller bath refreshes starting near $5,900. We stock and install Unilock-compatible hardscape elements, wall systems, and waterproofing components, and we can usually schedule your free estimate within 48 hours. Most San Jose homeowners discover their Unilock system needs attention when they notice efflorescence blooming on shower walls, loose coping stones around tub surrounds, or water pooling where the waterproofing membrane has separated at the drain assembly.

Call (669) 271-8644

Which Unilock Models This Applies To

Unilock’s bathroom and wet-area product lines break into three categories we regularly handle in San Jose: the Lineo Dimensional Stone wall system, the Brussels Dimensional System for tub and shower surrounds, and the Copthorne and Courtstone accent bands used on vanity kickplates and feature walls. The critical compatibility point is the Series II versus Series III waterproofing substrate, introduced in 2019. Series III uses a modified drainage mat with 40% faster weep capacity; if your bathroom was built before 2019, the older membrane will not interface correctly with new Series III wall units without a transition kit, which we carry.

To identify your system, check the back of any loose stone for a stamped date code and look for a small embossed “II” or “III” on the drainage flange behind your access panel. If you see no marking, measure the flange thickness: Series II runs 3/16 inch, Series III runs 1/4 inch. We stock both OEM Unilock transition kits and the Mapei Kerdi-equivalent alternative, which we specify when the original part is backordered from the Ontario factory. Rowan Construction Group San Jose is an independent service provider, not affiliated with Unilock.

Signs Your Unilock Bathroom Remodeling Is Failing

• White powder on grout joints or stone faces. This is efflorescence, mineral salts pushed through the mortar bed by moisture migration. In San Jose’s clay-heavy Almaden Valley soils, hydrostatic pressure against slab-on-grade baths accelerates this; it means your waterproofing membrane has a breach or your weep holes are clogged.
• Loose or “drummy” stones when tapped. The thinset bed has de-bonded, usually from repeated thermal cycling. San Jose’s 30-degree daily temperature swings in summer, especially in south-facing Willow Glen bathrooms, stress the adhesive interface between stone and substrate.
• Water pooling at the shower threshold or tub edge. The preslope beneath your Unilock pan system has settled or the liner was punctured during original installation. We find this most often where the plumber’s test plug was removed carelessly, leaving a pinhole that enlarges over years.
• Grout cracking in straight lines following control joints. Your substrate moved, but the Unilock system was installed without expansion joints at the correct spacing, 8 to 12 feet for interior wet areas. The grout is doing what it should, cracking instead of the stone, but the underlying movement needs addressing.
• Musty odor persistent after cleaning. Moisture has reached the wall cavity or subfloor. With Unilock’s permeable mortar beds, a failed membrane lets water wick horizontally fast, we have opened walls in Cambrian Park homes and found rot extending four feet from the shower valve.

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Replacement Cost & What’s Included

What drives the range: bathroom square footage, whether we are removing existing tile or stone down to studs, the condition of the subfloor and wall framing, and whether your drain location moves. Every quote from Rowan Construction Group San Jose is a flat written price with a written scope, delivered before any work starts, Clause 1 of The Haven Standard. The price includes demolition, disposal, substrate repair, waterproofing membrane installation, Unilock materials, mortar and grout, and a 365-Day Done Right Promise on workmanship. We pull permits and pass inspections; no change proceeds without a signed change order.

DIY or Call Us?

There is honest work a homeowner can do: verify your model series from the stamp codes, photograph the failure area for our review, and check that your shower drain cover removes freely without forcing the threads. What goes wrong fast: Unilock’s wall systems require a flood test of the waterproofed pan for 24 hours before stone goes up, skip this and you will not know the membrane leaks until the efflorescence appears six months later. The mortar bed must pitch 1/4 inch per foot to the drain; we have seen level beds in DIY forums that held water for years, destroying the framing. And the stone itself, 3/4 inch thick in most lines, is heavy enough to injure if dropped and unforgiving if set in the wrong thinset. If your bathroom is on a second floor, the structural load calculation matters, a 40-square-foot Unilock shower weighs roughly 900 pounds wet. Call (669) 271-8644 to schedule your free estimate. We will review what you have found, give you a written price, and if you bring a competitor’s quote, we will review it line by line at no charge.

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