Tear-out to the studs
We remove tile, backer board, and any failed membrane down to the framing. This is the only way to see how far water traveled and to fix rot before it spreads. Most tear-outs take one to two days.
We seal showers, wet rooms, and floors so water never reaches your framing
Bathroom Waterproofing Scottsdale AZ that stops leaks cold
Bathroom Waterproofing Scottsdale AZ is the layer between your tile and your framing that decides whether a remodel lasts 10 years or 30. We install bathroom waterproofing membrane Scottsdale systems on shower pans, walls, and wet-room floors for homeowners in Maricopa County. If your grout is cracking, your caulk lines are failing, or you smell mildew behind the wall, water is already winning. We stop it before the next monsoon season.
Careful work. Honest options.
About this service
What Bathroom Waterproofing Scottsdale AZ Really Involves
Bathroom Waterproofing Scottsdale AZ is a bonded, code-compliant barrier system that keeps water inside the shower or tub footprint instead of letting it soak into cement backer board, drywall, and wood framing. We strip the wet area back to the studs, replace any rot, then build up the layers: a sloped mortar bed, a waterproofing membrane, alkali-resistant mesh at every corner and seam, and a flood test before a single tile goes down. A moisture meter tells us what the wall is hiding before we close it up.
Scottsdale homes take a beating from hard water and 100-degree summers. Shower pans crack, grout deteriorates, and failing caulk lines let water wick behind the tile for months before you see a stain on the ceiling below. That is why we treat shower waterproofing Scottsdale work as a system, not a patch. If you have been searching bathroom waterproofing near me Scottsdale AZ, the fix is not more silicone. It is a proper membrane installed to TCNA guidelines and tested before tile.
- ✓ Stops mold before it starts
- ✓ Protects your remodel investment
- ✓ Prevents shower pan leaks
- ✓ Meets Arizona code and passes inspection
What's included
What Our Waterproofing Service Covers
Every waterproofing job includes tear-out of the failed layers, substrate repair, membrane installation, and a 24-hour flood test. Tile, fixtures, and glass are quoted separately because they vary so much from bathroom to bathroom. You always see the full scope and price before we start.
Substrate and framing repair
We sister in damaged studs, replace rotten subfloor sections, and set a new sloped mortar bed. A laser level keeps the pitch correct so water runs to the drain instead of pooling in a corner.
Membrane and seam sealing
We install the waterproofing membrane across the pan, up the walls past the showerhead, and out over the curb. Every corner gets a pre-formed band, every seam gets mesh, and every penetration gets sealed.
24-hour flood test
We plug the drain, fill the pan, and let it sit a full day. If the level holds, the membrane is sound. We photograph the test and coordinate with the inspector when a permit is required.
Drain and valve sealing
Shower drains and valves are the two most common leak points. We seal both penetrations with membrane collars and test the plumbing before the wall closes, so a drip never reaches your framing.
Exhaust fan and ventilation check
Poor bathroom ventilation keeps humidity high and feeds mold. We verify the exhaust fan pulls air, vent it outside if needed, and make sure the room dries out between showers.
How it works
How Our Waterproofing Process Runs
We remove tile, backer board, and any failed membrane down to the studs. A moisture meter and visual inspection tell us how far the water traveled. If we find rot or a cracked shower pan, we show you the photos and the fix before moving on. Most tear-outs take one to two days.
We sister in any damaged framing, set a new sloped mortar bed, and install cement backer board with the correct fasteners and spacing. A laser level keeps the pan pitch right so water runs to the drain, not into the corners. This stage sets up everything that follows.
We roll or sheet the waterproofing membrane across the pan, up the walls to at least 6 inches above the showerhead, and out past the curb. Every corner gets a pre-formed band, every screw penetration gets sealed, and every seam gets mesh and membrane. This is the step that actually stops water.
We plug the drain, fill the pan with water, and let it sit 24 hours. If the level holds, the membrane is sound. If it drops, we find the failure and redo it before tile. We photograph the test for your records and coordinate with the city inspector when a permit is required.
Only after the flood test passes do we set tile with a notched trowel and a tile saw, grout with epoxy grout in wet areas, and finish with silicone caulk at every change of plane. We clean the site, walk you through the work, and hand over care instructions.
STEP 01Tear-out and inspection
We remove tile, backer board, and any failed membrane down to the studs. A moisture meter and visual inspection tell us how far the water traveled. If we find rot or a cracked shower pan, we show you the photos and the fix before moving on. Most tear-outs take one to two days.
Tools & methods
Tools and Methods We Use
Moisture meter
Reads the moisture content in framing and subfloor before we close a wall. It tells us how far water traveled and whether we need to replace materials.
Laser level
Keeps the shower pan pitch correct and the walls plumb. A level pan is what makes water run to the drain instead of pooling in a corner.
Notched trowel and grout float
Spreads thinset evenly and packs grout into joints without voids. Voids behind tile are where water collects and mold starts.
Tile saw and wet saw
Cuts porcelain, ceramic, and natural stone cleanly. Precise cuts mean tight joints and fewer places for water to get behind the tile.
Caulking gun
Applies silicone caulk at every change of plane. Silicone flexes with the house and stays sealed where grout would crack.
Oscillating multi-tool
Cuts out failed caulk, backer board, and membrane in tight corners without damaging the surrounding framing.
Real results
Before and after.
Bathroom Waterproofing
Guest Shower Leaking Into Ceiling
A 1978 ranch home near Old Town had a stained ceiling below the guest bath. The shower pan had been leaking for at least a year. Tile was loose, greenboard was soaked, and two studs had rot.
After: We tore out the shower to the studs, sistered the rotted framing, set a new sloped pan, and installed a Schluter membrane. Flood test held 24 hours. New porcelain tile, epoxy grout, and a sealed valve penetration. Ceiling stain repaired.
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Bathroom Waterproofing
Master Bath Mold Behind Tile
A home in 85255 had a musty smell and black spots at the grout lines. The exhaust fan had failed years earlier, and hard water had eaten the cement grout. Moisture was trapped behind the tile.
After: We removed the affected tile and backer board, treated the framing, and installed a continuous liquid membrane across the wet area. New exhaust fan vented outside. Epoxy grout throughout. Moisture meter readings dropped to normal.
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Bathroom Waterproofing
Tub-to-Shower Conversion in Fountain Hills
A homeowner wanted a walk-in shower but the existing tub drain was in the wrong spot. The subfloor showed old water staining from a slow tub leak, and there was no membrane behind the surround.
After: We relocated the drain, rebuilt the subfloor, set a new sloped pan, and waterproofed the entire wet area. Flood test passed. Installed a curbless entry with porcelain tile and a frameless glass door. No leaks after two monsoon seasons.
Book this service → Problems we solve
Water Problems We Fix Before They Spread
Most bathroom water damage starts small and stays hidden for months. These are the failures we see most often in Scottsdale, and what happens if you leave them alone.
Ask a pro →Shower pan leaks into the ceiling below
We tear out the pan, rebuild the slope, install a new waterproofing membrane, and flood-test it for 24 hours. You see the test result before tile goes back down, so the leak is gone for good.
Grout deterioration and failing caulk lines
We strip the failed grout and caulk, check the membrane behind it, and rebuild with epoxy grout and silicone caulk at every change of plane. Epoxy grout resists Scottsdale's hard water far better than cement grout.
Mold and mildew behind the tile
We remove the affected materials, treat the framing, and install a continuous waterproofing membrane so the cavity stays dry. We also check the exhaust fan, because poor ventilation is usually what started the problem.
Water damage under flooring
We seal the floor perimeter, protect the subfloor, and tie the floor membrane into the shower membrane so there is no gap. The whole wet area becomes one continuous barrier.
Proof you can check
Licensed, Tested, and Backed
- Arizona ROC Contractor License · Arizona Registrar of Contractors
- EPA Lead-Safe Certified Firm · U.S. Environmental Protection Agency
- Waterproofing Membrane Certification · Schluter Systems
- OSHA Safety Compliance · Occupational Safety and Health Administration
Most shower waterproofing jobs in Scottsdale run $900 to $2,800 in 2026, depending on square footage, whether we tear out to the studs, and the membrane system you choose. A full wet-room floor adds more. The number that matters is the one on your written estimate, and we give you that before any demo starts.
Hard water and 100-degree summers break down grout and caulk faster here than in most markets. Once those fail, water wicks behind the tile and into the framing. Mold, rot, and water damage under flooring follow. A correct membrane keeps the cavity dry and protects everything you just paid to install.
A standard shower takes three to five working days from tear-out to flood test, plus 24 hours for the test itself. Full wet-room waterproofing runs five to eight days. Tile and grout add another two to four days. We give you a day-by-day schedule before we start so you can plan around it.
Bonded sheet membranes like Schluter-KERDI and liquid-applied systems both perform well here when installed to TCNA guidelines. The membrane matters less than the installation: pre-formed corners, sealed penetrations, and a 24-hour flood test. We recommend the system that fits your substrate and budget, then we build it right.
Ready when you are
Get Bathroom Waterproofing Scottsdale AZ Done Right
Call today for a same-day estimate on Bathroom Waterproofing Scottsdale AZ. We are licensed, insured, and we flood-test every pan before tile. One call, a straight price, and a wet area that stays dry through monsoon season.
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Request an appointment
Contact Our Scottsdale Bathroom Team
Call +1 855-612-4434 or email [email protected] and we will get back to you the same business day. We answer the phone Monday through Friday, 8:00 to 18:00, and we schedule walkthroughs across Scottsdale and Maricopa County within a few days. Bring your wish list and your budget.