GAF Bathroom Remodeling Nationwide

GAF Bathroom Remodeling: The Fort Lauderdale Owner’s Guide

GAF bathroom remodeling in Fort Lauderdale typically runs $9,000-$28,000 for a full replacement, with written quotes delivered before any work begins. We stock GAF-compatible waterproofing membranes, underlayment, and ventilation components for same-day starts on most bathroom projects. Most Fort Lauderdale homeowners discover their GAF system is failing when they spot peeling paint near the exhaust fan, soft drywall around the shower surround, or a musty smell that persists even after cleaning - all signs that moisture is getting past the waterproofing layer that GAF materials are designed to protect.

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Which GAF Models This Applies To

GAF does not manufacture bathroom fixtures, but their StormGuard leak barriers, Deck-Armor breathable underlayment, and Cobra ventilation products are frequently specified by Fort Lauderdale contractors for bathroom moisture management, particularly in homes built between 1985 and 2010 where original vapor barriers have degraded. The critical compatibility gotcha: GAF’s StormGuard is a self-adhering membrane rated for roof decking, but in bathroom applications it must be paired with a separate shower pan membrane (we specify Kerdi or Hydro Ban) to meet Florida’s humidity demands. Check your existing installation for the GAF logo on the attic-side of the ceiling drywall near the vent stack, or on the roof sheathing above the bathroom if the space was part of a prior addition.

OEM GAF materials carry a limited lifetime warranty when installed as part of a full roofing system, but in bathroom retrofit work we often use Grace Vycor Plus or DuPont Tyvek as equivalent aftermarket barriers - same 40-mil thickness, same permeance rating, at roughly 15% lower material cost. The decision hinges on whether your bathroom shares a roof plane with the main house or sits under a separate flat roof, which changes the vapor drive direction. We measure twice, write it down, then say it once: the spec sheet goes in your file before the first tool comes out.

Signs Your GAF Bathroom Remodeling Is Failing

• Peeling paint or bubbling drywall near the ceiling. This indicates the GAF vapor barrier has separated at the vent penetration, letting Fort Lauderdale’s humid attic air condense on cooler bathroom drywall. The fix is re-sealing the penetration with compatible membrane, not just repainting.
• Soft or discolored baseboards adjacent to the shower or tub. Water is migrating past the tile grout through failed waterproofing membrane. In Victoria Park homes we’ve worked on, the original builder-grade paper-faced drywall behind the tile crumbles first because it was never meant to see moisture.
• Exhaust fan runs constantly but humidity lingers. The GAF Cobra vent may be blocked by attic insulation or the duct run exceeds 25 feet, defeating the fan’s rated CFM. We check static pressure and duct length before quoting a fan upgrade.
• Musty odor that returns within 48 hours of cleaning. Mold is growing on the organic side of a compromised barrier. Surface cleaning won’t reach the colony; the affected drywall and membrane must come out.
• Tile cracks or grout lines that widen seasonally. The substrate is moving due to moisture swelling and drying cycles. This accelerates in Fort Lauderdale’s wet season when indoor humidity spikes above 65% without proper ventilation.

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Replacement Cost & What’s Included

The spread between $9,000 and $28,000 comes down to three factors: square footage, finish material grade, and how much of the existing moisture barrier has failed. A Victoria Park bathroom with intact subfloor and accessible plumbing stays near the low end; a Rio Vista job where we find carpenter ants in the sill plate from years of slow leakage pushes toward the high end. Every quote lists materials by brand - GAF, Kerdi, Kohler, Toto - with line-item labor, and carries our 365-Day Done Right Promise. Under Clause 1 of the Haven Standard, that written price is locked until you sign a change order. No exceptions since 2007.

DIY or Call Us?

There’s safe reconnaissance and there’s work that belongs to a licensed contractor. You can confirm the symptoms above with a moisture meter from any hardware store, and you can photograph the GAF label in your attic for our reference. What you should not attempt: cutting into a shower surround to inspect the membrane, removing a load-bearing wall to expand the bathroom, or handling electrical work near water sources without proper permitting. Fort Lauderdale requires permits for any plumbing or electrical modification, and the inspection record protects your resale value.

We carry GAF-compatible membranes, moisture-resistant drywall, and exhaust ducting on every bathroom truck. Call (754) 254-7676 to schedule your free estimate - we’ll bring the moisture meter, read the existing conditions, and leave you with a written price before we go.

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