The Complete Guide to Tile Showers: Waterproofing, Grout & What Lasts

What Separates a Shower That Lasts From One That Doesn't

A tile shower done right is one of the most durable features you can install in a home — a 20-year life expectancy is realistic, and some well-built showers outlast the homes they're in. A tile shower done wrong is an expensive repair job waiting to announce itself, usually around year three to five, when cracking grout and loosening tile reveal that water has been working its way behind the wall since the day it was installed.

The difference between these two outcomes is rarely the tile. The tile is the surface. The decisions that determine long-term performance happen behind it.

Tile Selection: What Actually Matters

Porcelain vs. ceramic: For shower walls and floors, porcelain is the right choice. Porcelain is denser and less porous than ceramic, which means it absorbs significantly less water over its lifetime. The manufacturing process fires porcelain at higher temperatures, resulting in a harder, more durable product. For a bathroom floor that doesn't see direct water spray, high-quality ceramic is acceptable. For anything in the shower enclosure itself, specify porcelain.

Size and format: Larger tiles mean fewer grout lines, which means less maintenance and a cleaner look. But larger tiles require a flatter substrate and more precise installation — they're less forgiving of subfloor variation. On shower floors, smaller mosaic tile (1x1 or 2x2) is often the right choice because it can follow the slope to the drain and provides more grout lines for traction.

Finish: Matte and textured finishes for shower floors (slip resistance). Polished or matte both work for shower walls — matte hides water spots more effectively, polished is easier to wipe down. In the Shreveport and East Texas market, large-format matte porcelain in neutral tones has become the most popular specification for good reason.

Waterproofing: The Decision Nobody Tells You About

Tile is not waterproof. Porcelain is highly water-resistant at the surface, but water moves through grout joints, around fittings, and at corners and transitions over time. Without a waterproofing membrane behind the tile, that water has nowhere to go.

We use Schluter® KERDI waterproofing on every shower we build. This is a bonded membrane system applied directly to the substrate before tile installation. It creates a continuous waterproof layer — not a water-resistant substrate, but an actual waterproof barrier — that the tile mortar bonds to directly.

The Schluter system requires more time and more expensive materials than simply tiling over cement board. It's also the reason our showers are still performing at year ten when other contractors' showers are being demoed and rebuilt. In the humid climate conditions across northwest Louisiana and East Texas, this system is not optional — it's the baseline.

Grout: The Maintenance Variable

Grout selection affects both performance and maintenance over the life of the shower. Here's how the main options compare:

Sanded grout: Traditional cement-based grout used for joints wider than 1/8 inch. Durable and inexpensive, but porous and requires sealing every one to two years in a wet environment. When not sealed, it absorbs water, promotes mildew, and stains permanently over time.

Unsanded grout: Used for joints 1/8 inch and smaller. Same porosity and sealing requirements as sanded grout.

Epoxy grout: Non-porous, stain-resistant, requires no sealing, and holds its color for the life of the installation. Also more expensive and more demanding to install — it has a faster working time than cement grout and is less forgiving of installation errors. For shower floors and areas of frequent water contact, epoxy grout is the best long-term choice. We use it on every shower floor we build.

The Drain: More Important Than It Looks

The drain connection is the most leak-prone point in any shower. We use Schluter Kerdi-Drain, which integrates directly with the KERDI waterproofing membrane — creating a continuous, bonded watertight connection from substrate to drain. No sealant-dependent joint. No clamping ring that can loosen.

Linear drains have become popular in Bossier City and Shreveport bathroom remodels for both aesthetic and practical reasons: they allow a full single-slope shower floor (easier to build correctly than a traditional four-way slope), they look modern, and they're easier to clean.

Niches and Benches

Shower niches are one of the most requested features in bathroom remodels and one of the most common sources of shower leaks. A niche that's not properly waterproofed on all five interior surfaces — including the back wall and the floor of the niche — will accumulate water and eventually fail.

We build niches as part of the integrated Schluter waterproofing system, not as an afterthought. If you're planning a niche or bench, ask your contractor specifically how they waterproof those features and what system they use.

What a Good Estimate Should Include

A written estimate for a tile shower project should specify:

• Substrate and waterproofing system
• Tile specification (size, format, material)
• Grout type
• Drain specification
• Niche and bench construction method if applicable
• Timeline by phase (substrate, tile, grout, cure)

If an estimate doesn't include the waterproofing specification, ask for it. The answer tells you more about the contractor than any other part of the document.

We build tile showers throughout Shreveport, Bossier City, Greenwood, Tyler, Longview, and across the Ark-La-Tex region. Call Kevin at (318) 250-4948 for a free estimate.