Why Cement Grout Is Bad for Large Format Tile

If you’re installing large format tile and still using cement grout, we need to talk. Because this is where most failures begin.
Large format tile demands precision, stability, and long-term performance, and cement grout simply was not designed for that level of stress.

Here’s the truth the industry doesn’t always say out loud!

The Problem with Cement Grout and Large Format Tile

Large format tiles move differently than smaller tiles. They span wider areas, carry more point loads, and react more noticeably to traffic, substrate movement, and wide temperature changes.

And cement grouts simply can’t keep up.

1. Cement Grout Is Porous and Weak

Cement grout absorbs moisture. That moisture leads to:

  • Shrinkage during curing
  • Microcracking over time
  • Staining and discoloration
  • Loss of structural integrity

With large format tile, even minimal movement causes visible cracking. Once cracks start, failures only accelerate.

  1. Shrinkage Causes Cracks at Scale

Cement grout shrinks as it cures. On small tile, that shrinkage may be hidden. On large format tile, it becomes obvious fast.

Cracked grout lines:

  • Compromise aesthetics
  • Allow water intrusion
  • Lead to tile edge damage
  • Require frequent repairs

This is one of the most common reasons large format floors fail prematurely.

  1. Cement Grout Cannot Handle Movement

Large format tile installations require grout that can:

  • Absorb minor movement
  • Resist vibration and load
  • Maintain bond integrity

Cement grout is rigid and brittle. It does not flex. When the floor substrate moves, the grout cracks first.

This is why resin-based solutions like Starlike®Epoxy GroutsbyLitokol® outperform cement grouts in large format installations.

  1. Maintenance Becomes a Nightmare

Because cement grout is porous, large format tile floors become harder to maintain over time:

  • Cement grout darkens unevenly
  • Some stains become permanent
  • Harsh cleaners are required (not good for most tiles)
  • Regrouting becomes inevitable (sometimes sooner than later)

This increases labor costs, chemical usage, and downtime. This is the opposite of sustainability.

Pairing non-porous resin-based grouting systems like Starlike Epoxy grouts with modern cleaning solutions like the pH-neutral cleaners from Litokol with ZHERORISK® technology dramatically reduces maintenance and chemical dependence.

  1. Cement Grout Undermines Sustainability

Sustainability is not about cheap materials. It’s about longevity.

Cement grout:

  • Fails sooner
  • Requires replacement
  • Generates more waste
  • Demands aggressive cleaners

In contrast, resin grout systems are designed to last the life of the tile, reducing environmental impact and long-term cost.

Why Professionals Are Moving Away from Cement Grout

Installers, architects, and facility managers are shifting toward resin grout because it offers:

  • Zero shrinkage
  • Non-porous performance
  • Crack resistance
  • Color consistency
  • Long-term durability

Starlike Epoxy GroutbyLitokol was engineered specifically with ZHERORISK® technology to solve the problems that cement grout simply cannot.

The Bottom Line

Large format tile magnifies every weakness in your installation system.

Cement grout is:

  • Porous
  • Brittle
  • High maintenance
  • Prone to cracking
  • Outdated for modern tile sizes

If you want your large format tile to perform the way it’s supposed to, your grout choice matters as much as the tile itself.

If you’re installing or specifying large format tile, stop using grout that works against you.

Upgrade to StarlikebyLitokol
Reduce callbacks and failures
Deliver cleaner, stronger, longer-lasting floors

Tap The Tile Doctor for real-world tile education on the best tiling practices and share this with anyone still trusting cement grout on large format tile.

UP YOUR TILE GAME! Do it now!
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