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Epoxy vs Cement Grout: Why the Right Choice Matters for Waterproofing

A quick guide to choosing between cement and epoxy grout for better shower longevity.

When your shower needs repairs or regrouting, one of the most important decisions is whether to use cement grout or epoxy grout. Most homeowners do not realise how much this choice affects the lifespan of their bathroom and the likelihood of future leaks.

This article explains the differences in simple terms and shows why Aquatech uses Mapei epoxy grout for long-lasting waterproofing.

What Is Cement Grout?

Cement grout is the traditional grout used in older bathrooms and budget repairs.
It is mixed with water and dries into a rigid, porous material.

Pros

  • Cheap
  • Easy for general tilers to install

Cons

  • Absorbs water
  • Grows mould easily
  • Cracks as the home moves
  • Needs sealing
  • Deteriorates quickly

Cement grout is usually the first part of a shower to fail.

What Is Epoxy Grout?

Epoxy grout is a high-performance grout made from resins, hardeners and specialised aggregates.
It is waterproof, stain resistant and extremely durable.

Pros

  • Completely waterproof
  • Resists mould
  • High strength
  • Long lifespan
  • No sealing required
  • Excellent for wet areas

Cons

  • More expensive than cement grout
  • Requires proper technique to install

Why Epoxy Grout Is Better for Showers

Bathrooms are constantly exposed to water, humidity and daily temperature changes. Epoxy grout handles these conditions far better than cement grout.

1. It blocks water absorption

Cement grout acts like a sponge. Epoxy grout does not absorb water at all.

2. It prevents mould growth

Because it is non-porous, mould cannot take hold in the joints.

3. It protects the waterproofing

When grout fails, water reaches the membrane and causes damage. Epoxy puts far less stress on the waterproofing system.

4. It lasts significantly longer

An epoxy regrout often outlives the tiles themselves.

Why Aquatech Uses Mapei Epoxy Grout

Aquatech uses Mapei epoxy grout because it offers the best performance, durability and protection for Queensland homes. It is resistant to moisture, heat, cleaning chemicals and everyday wear.

This means fewer leaks, fewer repairs and better long-term outcomes for homeowners and property managers.

Is Epoxy Grout Worth the Investment?

Yes. While epoxy grout costs more upfront, it saves money long term by:

  • Reducing the chance of leaks
  • Preventing costly structural repairs
  • Minimising maintenance
  • Extending the lifespan of the shower

For homes, apartments, hotels and managed properties, epoxy grout offers far better value than cement grout.

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