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KERDI Waterproof System for Tile Showers

A bonded, sheet-applied waterproof layer that sits right behind your tile. We install KERDI the right way—sealed seams, tested connections, and a tile-ready surface—so your shower looks great and stays dry.

  • Tile goes directly on the membrane
  • Low-VOC (Calif. 01350 compliant)
  • Curbless + linear drain friendly
KERDI waterproof membrane in a tiled shower

Why choose KERDI with EZ Bath

  • True waterproofing. A continuous bonded barrier keeps moisture out of the wall assembly.
  • Tile-ready. Ceramic, porcelain, or stone can be set directly on KERDI using thin-set.
  • Smart accessories. Pre-formed corners, bands, and pipe/valve seals make every joint watertight.
  • Cleaner installs. Faster dry-out between uses vs. saturated mud beds, and fewer callbacks.

How we build a KERDI shower

  1. Prep & cut: the substrate is clean, even, load-bearing; we pre-cut sheets to fit.
  2. Embed: spread thin-set with the specified trowel and press KERDI firmly—no trapped air.
  3. Seal seams: overlap KERDI or band with KERDI-BAND; add pre-formed inside/outside corners and pipe/mixing-valve seals.
  4. Movement joints: use KERDI-FLEX where expansion/flexibility is needed.
  5. Water test: after a 24-hour cure we flood-test seams and penetrations, then set tile.

Explore the KERDI System

Everything you need for a watertight, tile-ready shower—organized for easy browsing.

What KERDI does

KERDI is a bonded waterproof and vapor-retarding layer that sits directly under your tile. Because it’s on top of the backing—not hidden deep in a saturated bed—surfaces dry faster between uses and moisture stays out of the wall cavity.

Installation highlights

  • Correct trowel notch + full embedding into fresh thin-set
  • Overlapped seams or KERDI-BAND at joints
  • Pre-formed corners and pipe/valve seals for every penetration
  • KERDI-FLEX at movement joints
  • 24-hour cure, flood test, then set tile

Where it excels

  • Standard showers, steam showers (with KERDI-DS), tub surrounds
  • Curbless layouts with linear drains and large-format tile
  • Projects that demand clean, testable waterproofing

Ready to waterproof your next tile shower?

We design, prep, seal, and test—then set tile for a long-lasting finish.

Ready To Start The Process?

Reach out Now And Take Advantage of some of the best promotions of the year.  We are typically thousands of dollars less than our competitors.
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Corporate Headquarters — EZ Bath

11246 Timbertech Ln
Suite A
Tomball, TX 77375
Showroom Hours
  • Mon–Sat: 8a – 6p
  • Sun: Closed
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