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Tamko Bathroom Remodeling: The West Palm Beach Owner’s Guide
Tamko bathroom remodeling in West Palm Beach typically runs $9,000-$28,000 installed, depending on scope and material grade. We stock Tamko-compatible waterproofing membranes, underlayment, and flashing components, and we can usually schedule your project within a few business days. Most West Palm Beach homeowners discover their Tamko system needs attention when they spot soft drywall near the tub surround, peeling paint behind the toilet, or a musty smell that persists after cleaning - all signs that the waterproofing layer has compromised and moisture is migrating into the wall cavity.
Which Tamko Models This Applies To
Tamko’s bathroom-related products center on their TW MetalWorks flashing lines, waterproofing underlayments, and synthetic roofing underlayment products that double as secondary moisture barriers in full-gut remodels. The critical compatibility point is the TW-200 and TW-400 series flashing, which comes in 10-inch and 14-inch widths and must match your existing substrate thickness - typically 0.019 inch or 0.024 inch galvanized steel. We’ve seen West Palm Beach homeowners order the wrong gauge and discover the flange won’t seat flush against HardieBacker or Durock cement board, creating a capillary gap that wicks water.
We source OEM Tamko flashing and membrane where the original spec demands it, but we also stock Vycor Plus and Grace Ice & Water Shield as field-proven equivalents for the underlayment layer. The decision hinges on what your original contractor installed and whether your building inspector in Palm Beach County will accept an alternate on a permit amendment. If your home was built between 2005 and 2015 in the El Cid or Flamingo Park areas, there’s a good chance we installed the original Tamko layer and have the spec on file.
Signs Your Tamko Bathroom Remodeling Is Failing

- Soft or discolored drywall near the tub or shower surround. This indicates the Tamko waterproofing membrane has torn or the seam tape has delaminated, letting shower spray penetrate the cement board and reach the paper-faced gypsum behind it. In West Palm Beach’s year-round humidity, this accelerates to mold within 72 hours.
- Peeling paint or bubbling wallpaper on walls adjacent to plumbing fixtures. The cause is usually failed flashing at the valve penetration - the Tamko TW series piece that seals around shower mixing valves - which was either omitted or installed without the required bead of polyurethane sealant at the flange edge.
- A persistent musty odor that doesn’t resolve with surface cleaning. This points to trapped moisture in the wall cavity where the Tamko underlayment was improperly lapped, creating a reverse-shingle effect that channels water inward instead of shedding it to the drain pan.
- Loose or cracking floor tile near the shower threshold. The waterproof pan liner, often a Tamko-compatible PVC or CPE membrane, has developed a pinhole or the clamping ring drain was overtightened during original installation, fracturing the membrane at the stress point.
- Visible rust on nail heads or drywall screws in the ceiling below a second-floor bathroom. This means moisture has traveled past the primary waterproofing and reached the metal fasteners - a late-stage failure that usually requires opening the ceiling to assess structural damage.
Before
AfterReplacement Cost & What’s Included
| Scope | Price Range in West Palm Beach |
|---|---|
| Small bathroom remodel (partial gut, Tamko membrane replacement) | $5,000-$12,000 |
| Full bathroom remodel with Tamko waterproofing system | $9,000-$28,000 |
| Walk-in shower installation with full membrane and flashing | $4,500-$12,000 |
| Tub-to-shower conversion with pan liner replacement | $3,500-$10,000 |
| Shower replacement only (valve, surround, membrane) | $3,000-$8,500 |
| Vanity installation (no plumbing relocation) | $800-$3,000 |
The $9,000-$28,000 spread for a full bathroom remodel reflects three variables: square footage, material grade, and how far the moisture traveled before detection. A Flamingo Park bungalow with original 1926 plaster and a single compromised membrane seam can run higher than a 2019 West Palm Beach townhome with standard drywall and localized damage. Our quote itemizes every line - demolition, disposal, new cement board, Tamko or equivalent membrane, tile or surround, fixtures, and finish carpentry - with a written scope and fixed price before any work starts. Under Clause 1 of the Haven Standard, that number doesn’t change unless you sign a change order. Our 365-Day Done Right Promise covers the waterproofing workmanship, and we pull all required Palm Beach County permits with inspections passed before we close the project.
DIY or Call Us?

There’s a short list of checks a homeowner can safely perform: run the shower for ten minutes and inspect the access panel for drips, press firmly on drywall corners for softness, and sniff the vanity cabinet base for mustiness. What you find tells us where to start, and we encourage the call either way.
Where DIY goes wrong is the membrane installation itself. Tamko’s self-adhering underlayment demands a clean, dry substrate between 40°F and 120°F, with roll pressure applied evenly to prevent air bubbles that become water channels. The pan liner must be flood-tested for 24 hours before tile goes down - a step we’ve seen skipped in West Palm Beach flip projects that fail six months later. And the TW flashing requires precise cuts around valve stems that, if oversized, cannot be patched without full replacement. We’re not affiliated with Tamko, but we’ve installed their systems long enough to know where the tolerances live. Call (561) 475-3903 and we’ll schedule your free estimate, line-item the scope, and show you the photo record from a comparable job.
FAQs
A properly installed Tamko membrane system typically lasts 15-20 years, but Florida’s salt air and year-round humidity can shorten that to 10-14 years if the bathroom lacks adequate exhaust ventilation. Call (561) 475-3903 for an exact quote - estimates are free.
Localized membrane patches are possible if the damage is smaller than a quarter and the surrounding material is fully adhered, but most failures we see in West Palm Beach involve multiple seam points or degraded adhesive that makes patching unreliable. We warranty only full replacements. Call (561) 475-3903 for an exact quote - estimates are free.
Most projects run 10-14 business days from demolition to final inspection, assuming Palm Beach County permit approval and no hidden structural damage. A small bathroom with straightforward plumbing can finish in 7-10 days. Call (561) 475-3903 for an exact quote - estimates are free.
We stock TW series flashing in both gauges, Vycor Plus membrane, and compatible pan liner material on every bathroom remodeling truck - enough to handle most West Palm Beach replacements without a supply-house delay. Full tile and fixture selection happens at our supplier showroom, not from truck stock. Call (561) 475-3903 for an exact quote - estimates are free.
Rowan Construction Group West Palm Beach is an independent service provider and is not affiliated with, endorsed by, or sponsored by Tamko Building Products, LLC.
We also stock and install parts for KraftMaid cabinetry, Cambria countertops, and Silestone surfaces - brands we regularly pair with Tamko waterproofing systems in West Palm Beach bathroom remodels.
Measure twice, document everything, then get out of the way and let the work speak. That’s how we’ve delivered 4,000-plus projects since 2007, every one with a written price before the first tool came out and a photo binder at close. Grant Rowan keeps a clean site, returns calls the same day, and hands over documentation you can file with your homeowner’s insurance. If you’re seeing the symptoms above, don’t wait for the drywall to bloom - call (561) 475-3903 to schedule your free estimate.
Written by Grant Rowan, Owner, Rowan Construction Group West Palm Beach at Rowan Construction Group West Palm Beach, serving West Palm Beach and nearby areas.







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