Schluter Tile System FAQ

If you’ve been looking to upgrade your bathroom, the most important work usually happens behind the tile. A durable, continuous waterproofing layer keeps moisture out of your walls and floors so your new finishes last for years. That’s where Schluter®-KERDI comes in—and if you want a shave-friendly, easy-to-clean shower at the same time, start with a trusted local bathroom remodeling company in Houston to plan the whole system right.

What Is Schluter®-KERDI?

Schluter®-KERDI is a pliable, sheet-applied polyethylene (PEVA) membrane with non-woven polypropylene fleece on both sides. It’s designed to be set into thin-set mortar and tiled directly, creating a waterproof and vapor-retardant barrier for showers, tub surrounds, and other wet zones.

Specs at a Glance

• Sheet membrane with anchoring fleece on both faces
• Uniform ~8-mil thickness for a flat tile surface
• Large roll widths (up to ~2 m) = fewer seams and faster installs
• Compatible with most tile types (verify glass-tile instructions with your installer)

Where KERDI Excels

• Showers & steam showers: walls, ceilings, benches, and niches
• Tub surrounds: keeps splash zones truly waterproof
• Wet rooms / splash areas: behind tile wherever frequent water is present

The KERDI Family: Pieces for Every Detail

• KERDI-FLEX: waterproofing strip above movement joints—handles areas that flex.
• KERDI-KERS / KERECK-F / KERS-B: preformed inside/outside corners for curb-less transitions and tricky junctions.
• KERDI-KM: pre-cut pipe seals—fast, tidy waterproofing around protrusions.

Installation & Timing

• Tile immediately: In most areas, tile can be installed right after KERDI is embedded.
• Curves/partitions: Non-bearing partitions or curved applications may require extra steps—your installer will advise.
• Flood test: For new showers, a 24-hour water (flood) test is a smart quality check before tiling floors.

Compatibility & Limits

• Tile types: Works with most tiles; glass tile may have special adhesive or curing requirements—confirm in design.
• Avoid solvents: Products containing solvents can compromise adhesion—stick to compatible mortars and sealants.
• Not an uncoupling layer: KERDI’s job is waterproofing and vapor control; use a separate uncoupling membrane if required under tile.

Longevity, Cost & Maintenance

• Service life: Built for long-term waterproofing performance when installed correctly.
• Cost: Varies by coverage area and accessories (corners, seals, drains). Your proposal will reflect layout and scope.
• Care: The membrane sits behind the tile—maintenance focuses on finished surfaces and drains (keep weep paths clear).

Plan It Right—Once

If you’re reworking layouts, fixtures, or adding a bench/niche, fold waterproofing decisions into your design early. Our team pairs the right system with a fresh look so function and style last together. Explore the details on our KERDI product page and schedule a shower remodel consult to get exact recommendations for your space.

FAQ: Schluter®-KERDI

Q: Do I still need plastic sheeting behind my backer board if I use KERDI?
A: No—KERDI is the primary waterproof/vapor-retardant layer. Avoid “double barriers” (poly behind + membrane in front) that can trap moisture.

Q: Can I set tile immediately after installing KERDI?
A: Yes, in most cases tile can be installed right away. Follow your installer’s guidance for specialty areas.

Q: Is KERDI appropriate for steam showers?
A: KERDI is commonly specified in residential steam showers as a vapor-retardant waterproof layer when installed per manufacturer instructions.

Q: Can I use KERDI with glass tile?
A: Often yes, but glass tile may call for specific mortars and cure times. Confirm your glass tile manufacturer’s instructions with your installer.

Q: Should I combine KERDI with solid surface walls?
A: Typically you choose one finish approach: tile over a membrane (KERDI) or install solid surface panels as the finished, waterproof surface.

Tags: Schluter KERDI, waterproofing, shower remodel, tile installation