Introduction
Installing a beautiful frameless shower enclosure begins with a reliable foundation — the tile work. At Jax Custom Glass, we custom-make each panel to fit your space precisely. The quality of the tile work plays a critical role in how easy the installation is and how clean and precise the final result looks. That’s why it’s essential for your tile installer to follow industry standards like those in the 2025 TCNA Handbook. These guidelines help ensure your walls meet the proper tolerances for a clean and secure fit. This blog will guide you through what to watch for during tile installation, so your project proceeds smoothly and looks flawless.
Instructional Video
For a step-by-step visual guide on proper tile installation techniques, watch this video:
Why Proper Tile Installation Matters
When we drill into your tile to secure your frameless enclosure, we use high-quality diamond drill bits specifically designed for tile, porcelain, stone, and other hard surfaces. This ensures precision and minimizes the risk of damage during installation. However, even with the best tools and techniques, if the tile installation isn’t done correctly, complications can still arise. Following recognized guidelines, such as those outlined by the TCNA, ensures that your surface is well-prepared for a seamless installation.
Choosing the Right Tile for Glass Installation
The type of tile you choose where the glass will be anchored can make a big difference in your shower installation. Some materials, such as glass tile, pebble mosaics, and highly porous stones, are more fragile and naturally prone to breakage. Even when installed correctly, these tiles may crack during the drilling process, simply due to their composition. If that happens, the tile will need to be replaced before the installation can proceed.
For the best results, we recommend choosing dense and durable tiles such as:
- Porcelain tile — known for its density and resistance to cracking.
- High-quality ceramic tile — a durable, cost-effective option for stability.
- Natural stones like granite or quartzite — harder stones that withstand drilling better than porous materials.
Making the right tile choice ensures greater stability, reduces the chance of delays, and supports a cleaner, smoother installation process.
Common Tile Issues to Watch For
- Hollow Spots Behind the Tile
Tap on your tiles after installation. If you hear a hollow sound, that means there’s a void or air pocket behind the tile, which makes it less stable during drilling.
Pro Tip: Ask your installer to ensure full coverage of thin-set mortar to eliminate these voids. - Uneven or Sloped Surfaces
Our frameless shower glass is custom-made and precisely tailored to your space. Even if your walls or tiles are a little out of level or plumb, we can still achieve a beautiful installation. However, when the walls have drastic unevenness or “waves” (areas that bend in and out), it limits how perfectly the glass can sit against the surface. The straighter and more linear your tile work is, the smoother the installation process will be — and the cleaner and more polished the final result.
What to Do: During the tile phase, use a level to check your walls and floors. If you notice significant irregularities, addressing them early will help us deliver the most seamless and precise installation possible. - Cracks in the Tile or Grout Lines
Even hairline cracks in tiles or grout indicate weak spots that may worsen. Replacing damaged tiles before installing glass avoids potential complications during installation. - Improper Backer Board or Waterproofing
Tiles need a stable, properly waterproofed base to safely support shower hardware. Leading systems like Schluter®-KERDI, MAPEI’s Mapelastic AquaDefense, and Custom Building Products’ RedGard® waterproofing systems — including their liquid, fabric, and anti-fracture options — provide industry-trusted solutions. These systems create a moisture barrier and protect against substrate movement, helping your tile installation remain stable and secure. Without proper waterproofing and a solid backer board, tiles can loosen or shift over time, potentially interfering with the performance of your shower.
How to Ensure a Smooth Tile Installation
- Hire knowledgeable and experienced tile contractors who follow TCNA standards.
- Inform your tile installer early that a frameless shower enclosure will be installed. Depending on the desired layout, if they are not familiar with the specific requirements or have questions, encourage them to contact us directly. We’re always happy to provide guidance and ensure they have the information needed for a flawless installation.
Final Thoughts
Careful planning and professional tile work are key to achieving a clean and precise frameless shower installation. At Jax Custom Glass, we deliver precision in fabrication and installation, and with well-prepared tile surfaces, your shower will have a flawless, lasting finish.