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GAF Bathroom Remodeling: The Woodland Hills Owner’s Guide
GAF bathroom remodeling in Woodland Hills typically runs $9,000 to $28,000 installed, depending on the size of the bath, the condition of what’s behind the walls, and whether you’re keeping the existing footprint or moving plumbing. We stock and install GAF roofing and waterproofing components that often come into play during a bath remodel, and we can usually get your project on the schedule within a week or two of the estimate. Most Woodland Hills homeowners call us because they’ve noticed water staining on the ceiling below an upstairs bath, cracked grout that keeps reappearing, or that soft give in the floor near the tub. The problem usually isn’t the tile you can see. It’s what’s underneath it.
Which GAF Models This Applies To
GAF doesn’t make shower pans or wall tile, but their waterproofing membranes and underlayment products show up regularly in Woodland Hills bathroom remodels, especially where a bathroom sits under a flat or low-slope roof section. The two you’ll hear us reference most are GAF StormGuard and GAF Deck-Armor. StormGuard is a self-adhered ice-and-water barrier that we use as a secondary waterproofing layer under tile backer board in wet zones. Deck-Armor is a breathable roof underlayment that we spec when a bathroom remodel includes replacing the roof assembly above it, which happens more often than people expect in Woodland Hills where older homes carry original framing.
Here’s the compatibility gotcha: StormGuard comes in specific roll widths and thicknesses, and it is not a substitute for a proper tile membrane like Schluter Kerdi or a liquid-applied membrane. If someone tells you GAF roofing membrane alone will waterproof a shower, walk away. We treat GAF products as what they are: excellent roofing and weather-barrier materials that support a bathroom remodel, not the primary shower waterproofing. For the actual wet zone, we pair GAF underlayment with a shower-specific system, and we stock the most common GAF roll sizes on the truck so we’re not waiting on a supplier mid-project.
Styles & brands we work with
Signs Your GAF Bathroom Remodeling Is Failing
- Water staining on the ceiling below the bathroom. This usually means the waterproofing layer has been compromised, whether from an old shower pan, failed caulk, or a roof membrane that developed a seam gap. Woodland Hills sees long dry stretches, so a small leak can go unnoticed for months until a heavy rain season or a full tub reveals it.
- Grout that cracks in the same places after you’ve repaired it twice. The grout isn’t the problem. It’s movement in the subfloor or the tile substrate. Woodland Hills homes built before the late 1980s often have subfloor deflection that new tile will not tolerate without proper prep.
- A soft or spongy spot near the toilet or tub edge. That’s waterlogged subfloor. In our experience across Warner Center and the surrounding Woodland Hills neighborhoods, this is one of the most common hidden costs of a bath remodel, because you don’t know it’s there until the old flooring comes up.
- Musty odor that doesn’t go away after cleaning. Persistent smell means trapped moisture behind a wall or under the floor. The fix is never air freshener. It’s opening up the section, finding the source, and replacing the damaged material.
- GAF membrane visible at the tub lip or shower threshold. If you can see the edge of the membrane peeling, lifting, or pulling away from the wall board, the water barrier has failed at the point where it matters most. That’s a call to us before the damage spreads.
Replacement Cost & What’s Included
A full GAF bathroom remodeling project in Woodland Hills lands between $9,000 and $28,000 installed. That range covers a lot of ground, and we want you to understand why. At the lower end, you’re looking at a standard 5×8 bath, replacing fixtures and finishes without moving plumbing or walls. At the higher end, you’re looking at bigger bathrooms, structural repairs to water-damaged subfloor, moving drains, custom tile work, or adding GAF underlayment as part of a roof repair above the bath.
What drives the price, in order: condition of the subfloor and framing, tile and fixture selections, plumbing changes, and whether the ceiling below needs repair. We give every Woodland Hills homeowner a written line-item price before work starts, and that price doesn’t change unless you change the scope. Every completed bathroom remodel is covered for 365 days from the completion date under our Done Right Promise. If the work is not right within that year, we make it right at no cost to you.
Authoritative pricing for this page in Woodland Hills: key project ranges are $5,000 – $12,000 for a small bathroom remodel, $4,500 – $12,000 for a walk-in shower installation, and $9,000 – $28,000 for a full bathroom remodel.
See the difference
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AfterDIY or Call Us?
Some things you can handle yourself before calling: check the caulk around the tub for cracks, run your shower and look at the ceiling below, and look for any visible water marking on baseboards. Those are safe checks. But opening up a shower wall, pulling a toilet, or lifting flooring to check subfloor is where DIY goes wrong fast in Woodland Hills. You might find a cast iron drain flange from 1962 that crumbles when you touch it, or electrical that was run in a way that surprised everyone. If GAF waterproofing has failed, it has already let water into places you cannot see, and the correct fix requires knowing exactly where the water went. Call us at (831) 290-6866 and we’ll figure out what’s actually going on before any tool comes out.
FAQs
How long does a GAF bathroom remodel last in Woodland Hills? A properly installed bathroom remodel with correct waterproofing typically lasts 20 to 30 years for structural and waterproofing components, with fixtures and finishes needing replacement sooner depending on use and water quality. Woodland Hills hard water shortens the life of fixtures and valves, so expect 10 to 15 years from a shower valve before mineral buildup takes a toll.
Can the GAF membrane be repaired instead of replaced? In some cases, yes, a small, accessible section of GAF membrane can be patched and resealed, but only if the surrounding area is clean, dry, and solid. If the membrane has failed at a shower threshold or tub lip, patching is a temporary fix at best. We’ll tell you straight which one you’re looking at, because a patch that fails in six months costs you twice.
How long does a bathroom remodel take in Woodland Hills? A standard full bathroom remodel takes 2 to 4 weeks from demolition to final inspection, depending on the size of the room, the condition of the subfloor, and whether plumbing is being moved. A small bathroom or shower replacement can often be completed in 1 to 2 weeks. We give you a start date and a completion window in writing before we begin.
Do you stock GAF products in Woodland Hills? We stock common GAF roll sizes and related waterproofing materials on our trucks, so most projects don’t wait on a supplier. For project-specific GAF packages or larger roof assembly work above a bathroom, we order exactly what the job needs and schedule delivery before we start. Call (831) 290-6866 for an exact quote, estimates are free.
Get Your Woodland Hills Bathroom Remodel Started
Isaac Pruett grew up in Los Angeles, learned his trade foundations at Los Angeles Trade-Technical College, and has spent years on job sites across the Valley, including long stretches of work near Warner Center in Woodland Hills. He knows what Woodland Hills homes hide behind tile and drywall, and he prices every job straight. Tell me what you need done. I’ll tell you what it takes and what it costs. Then we get to work. Call (831) 290-6866 for your free estimate.
Written by Isaac Pruett, Owner, Mason Remodeling Co – Woodland Hills, CA at Mason Remodeling Co Woodland Hills, serving Woodland Hills and nearby areas.
