Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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Before
AfterGAF Bathroom Remodeling: The West Palm Beach Owner’s Guide
GAF bathroom remodeling in West Palm Beach typically runs $9,000-$28,000 for a full renovation, with most projects quoted in writing before any demolition starts. We stock and install GAF-certified roofing materials used in bathroom additions, bump-outs, and second-story expansions where moisture barrier integration matters. Most West Palm Beach homeowners discover they need this service when they spot water staining on a ceiling below a bathroom, or when a home inspector flags the roofing-to-wall transition during a resale.
Which GAF Models This Applies To
GAF bathroom remodeling overlaps with three product families: the WeatherStopper system for roof-to-wall flashing in second-floor bath additions, the Liberty SBS membrane for low-slope sections over sunroom conversions that include half-baths, and the Cobra ventilation products we specify when a steam shower demands upgraded exhaust pathways through the roof deck.
Identifying your GAF components takes a ladder and a flashlight. Look for the printed strip along the shingle bundle, or the embossed GAF logo on ridge vent caps. For membrane work, the factory edge print includes a lot number and thickness spec, 60-mil or 80-mil. The critical compatibility gotcha in West Palm Beach: GAF’s Liberty membrane requires a specific primer for concrete tile substrates, and skipping it voids the system warranty. We keep that primer on the truck.
OEM versus aftermarket? For the membrane itself, we specify GAF factory material, every time. For fasteners and termination bars, we use Mule-Hide and Carlisle equivalents that meet the same ASTM D-6138 standard at lower cost, and we document the substitution in your written scope. Rowan Construction Group West Palm Beach is an independent service provider, not affiliated with GAF.
Signs Your GAF Bathroom Remodeling Is Failing
- Water stains on drywall beneath a bathroom. This usually traces to failed step flashing where a second-floor bath addition meets the main roof. In West Palm Beach, the afternoon thermal cycle loosens sealant faster than in cooler climates, and the gap opens from the bottom up.
- Soft spots near the toilet flange or tub surround. The subfloor has taken moisture, often because the Liberty membrane was terminated short of the wet wall during a previous renovation. We see this in 1980s ranch conversions from El Cid to Northwood.
- Peeling exterior paint below a bathroom window. Cobra ridge vent or soffit intake is blocked, trapping steam. The moisture migrates to the path of least resistance, which is often the window rough opening.
- Grout cracking in a shower pan after two years. The pan liner was not tied into the GAF waterproofing layer at the curb, or the pre-slope was omitted. Both are code violations we correct during a full remodel.
- Musty smell that returns after cleaning. Hidden mold in the wall cavity, typically where the tub-shower valve penetrates the tile backer without a sealed escutcheon. We find this behind fiberglass surrounds more often than tile.
BeforeAfterReplacement Cost & What’s Included
Full bathroom remodeling with GAF moisture management in West Palm Beach: $9,000-$28,000. Small bathroom remodels run $5,000-$12,000. Walk-in shower installations, where GAF Liberty membrane often forms the waterproof pan, range $4,500-$12,000. Tub-to-shower conversions land at $3,500-$10,000.
What drives the spread? Three things: whether we are moving plumbing (add $1,500-$4,000), whether the subfloor needs replacement after moisture damage (add $800-$2,400), and whether the project includes expanding into an adjacent closet or hallway (structural and roofing tie-in, $3,000-$8,000). Every quote is a flat written price with line-item breakdown. Under Clause 1 of the Haven Standard, that price is locked until you sign a change order. We have kept projects within a few percent of the agreed number across 4,000-plus jobs since 2007.
What’s included: demolition to the studs, GAF-specified moisture barrier installation, plumbing rough-in by licensed trades, tile or surround finish, fixture setting, and a documented photo record of every stage. The 365-Day Done Right Promise applies to all work.
DIY or Call Us?
What you can safely check: confirm that your bathroom exhaust fan duct terminates outside, not into the attic. Look for the metal collar at the roof sheathing. If it is flex duct lying loose on insulation, that is a mold factory and a fire hazard, but it is also a five-minute visual check.
Where DIY goes wrong: shower pan liner installation requires a flood test (fill to 2 inches, hold 24 hours) that most homeowners skip. More critically, any work involving the roof deck, load-bearing wall modification, or electrical relocation in a wet location needs permitting and inspection in Palm Beach County. We pull those permits, schedule those inspections, and include the documentation in your closeout binder. For the structural and waterproofing work, call (561) 475-3903 and we will schedule your free estimate.
FAQs
A properly installed bathroom with GAF moisture management should last 20-25 years before major component replacement, though grout and caulk need refresh at 7-10 years in Florida’s humidity. The GAF membrane itself carries a 10-year material warranty when installed to factory spec. Call (561) 475-3903 for an exact quote on your project - estimates are free.
Spot repairs work for isolated failures: a single leaking valve, localized tile damage, or a failed exhaust fan. If the subfloor is soft, the pan liner is compromised, or you are seeing mold in multiple wall cavities, partial repair usually costs more over five years than a full remodel with proper waterproofing. We will tell you which category you are in during the estimate walkthrough. Call (561) 475-3903 to schedule yours.
Most full bathroom remodels in West Palm Beach run 10-14 working days from demolition to final fixture setting, assuming no structural surprises and standard Palm Beach County permitting timelines. Custom tile work, imported fixtures, or structural modifications add time; we build that into the written schedule before work starts. Call (561) 475-3903 for a timeline specific to your scope.
We stock GAF Liberty membrane, WeatherStopper accessories, and Cobra ridge vent components in our West Palm Beach warehouse. Custom-order items like designer fixtures or imported tile typically arrive in 5-10 business days; we schedule demolition to align with delivery so your bathroom is not torn up waiting. Call (561) 475-3903 to confirm current stock for your project.
Measure twice, document everything, then get out of the way and let the work speak. That’s how Grant Rowan trained his crew, and it is how we approach every bathroom in West Palm Beach, from a compact guest bath in South End to a full master suite overlooking the Intracoastal.
Ready to price your project? Call (561) 475-3903 to schedule your free estimate. We will walk the space, identify the GAF components that apply, and deliver a written price before anyone picks up a tool. Bring a competitor’s quote and we will review it line by line at no charge.
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.