Tile Quality Grades Explained: What You’re Really Paying For

August 7, 2026

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⚡ TL;DR — Quick Summary

  • Price differences usually come down to grading, not to how nice a tile looks. Grading measures performance, not beauty.
  • The PEI system rates tiles 1 to 5 based on resistance to wear and abrasion.
  • Grade 3 is the sweet spot for most Australian homes: main bathrooms, kitchens, living areas and entryways.
  • Higher is not automatically better. A Grade 1 tile can be just as visually stunning as a Grade 5, it just belongs on a wall.
  • Construction matters too. Porcelain is denser and less porous than ceramic, and unglazed full bodied porcelain is the most durable option available.
  • You do not have to decode this alone. We can show you the specifications in person and tell you which grade your room actually needs.

If you have ever stood in front of two tiles that look almost identical and wondered why one costs noticeably more than the other, you are asking exactly the right question. It is also the moment most people quietly worry they are either about to overspend, or about to be talked into something.

When you step into the Mandurah Tile & Bathrooms showroom, you will see tiles at a range of price points and may wonder why some cost more than others. Much of the difference comes down to tile grading.

Tile grading is a system that reflects a tile’s durability, performance, and the most suitable areas for its use in your home.

Understanding tile grades empowers you to make smarter choices, ensuring each tile you select is the right fit for its space and purpose. Once you know how the system works, the price differences stop feeling arbitrary and start making sense.

What Are Tile Grades?

Grading measures performance, not looks. Tile grading, developed by the Porcelain Enamel Institute (PEI), rates tiles from 1 to 5 based on their resistance to wear and abrasion. These grades do not measure beauty or craftsmanship, but they measure performance.

A Grade 1 tile can be just as visually stunning as a Grade 5 tile, but they are designed for completely different purposes.

Important: a higher grade is not a better tile, it is a tougher one. The goal is matching the grade to the demands of the room, not buying the highest number you can afford.

Related: Reading Tile Specifications | What Affects Tile Pricing

Breaking Down the Five Tile Grades

Here is what each grade is built for, and what the price is actually buying you.

🎨 Grade 1: Wall Tiles Only

Best for bathroom walls, kitchen splashback, and decorative accents, Grade 1 tiles are designed purely for decorative purposes. They are typically thinner and more delicate, making them unsuitable for floors. These tiles excel at adding visual interest to walls where they will not experience foot traffic.

What you are paying for: aesthetic appeal and design variety. These tiles often feature intricate patterns, vibrant colours, and unique finishes that make them perfect for creating feature walls.

🪨 Grade 2: Light Residential Traffic

Grade 2 tiles offer slightly more durability than Grade 1 and can handle occasional foot traffic. They are suitable for spaces that do not see daily heavy use and are best for guest bathrooms and low traffic areas.

What you are paying for: a balance between design flexibility and basic floor durability. They work well in spaces where you want attractive flooring without the need for heavy duty performance.

🏠 Grade 3: Moderate Residential Traffic

Suitable for main bathrooms, kitchens, living areas and entryways, Grade 3 tiles are the most popular choice for Australian homes. They strike the perfect balance between durability and design, handling everyday family life whilst maintaining their appearance.

What you are paying for: versatility and reliable performance. These tiles are engineered to withstand regular foot traffic, moisture, and the demands of busy family spaces. This is where you will find the sweet spot for most residential renovations.

🔨 Grade 4: Heavy Residential and Light Commercial Traffic

Grade 4 tiles are built to handle more intensive use. They are ideal for high traffic areas in your home or light commercial applications such as laundry rooms and outdoor entertaining areas, and small retail spaces.

What you are paying for: enhanced durability and resistance to wear. These tiles maintain their appearance even under demanding conditions, making them a smart long term investment for hardworking spaces.

🏭 Grade 5: Heavy Commercial and Industrial Traffic

Best for commercial kitchens, retail stores and public facilities, Grade 5 tiles represent the highest level of durability. They are designed for environments with constant heavy foot traffic and can resist harsh chemical contact.

What you are paying for: maximum strength and longevity. Whilst most homeowners will not need this level of performance, Grade 5 tiles are worth considering for outdoor areas exposed to extreme conditions or home workshops.

Warning: Grade 1 tiles are thinner and more delicate, which makes them unsuitable for floors. If a tile you have fallen for is wall rated, use it as a feature wall and pair it with a floor rated tile rather than forcing it underfoot.

What your grade result means for a typical family home

You have landed on Grade 3

This is the right answer for most homes. Main bathrooms, kitchens, living areas and entryways are exactly what it is engineered for.

You are considering Grade 1 or 2 for a busy floor

This is the mismatch to catch now. Grade 1 is wall only, and Grade 2 suits occasional traffic such as a guest bathroom, not daily family use.

You are looking at Grade 5 for a home interior

Usually more than a house needs. It earns its place in outdoor areas exposed to extreme conditions or a home workshop, rather than a bedroom hallway.

Not sure which category your room falls into? Bring the room dimensions and a photo into the showroom and we will work it out with you.

Modern bathroom display with patterned black and white tiles

Modern bathroom with tub and terrazzo tiles

How to Match a Grade to Your Room

If the grading table still feels abstract, work through it in this order. It takes about five minutes and removes most of the guesswork.

Phase 1: Be honest about the space

1 Name the room and the surface. Wall or floor is the first fork in the road, and it rules Grade 1 in or out immediately.
2 Judge the real traffic. A guest bathroom used twice a month is a different job to a main bathroom or an entryway that the whole family walks through daily.
3 Note whether it gets wet or sits outside. Wet areas and outdoor applications change which construction suits, not just which grade.

Phase 2: Match the product to that answer

1 Set your minimum grade from the five descriptions above, then treat anything below it as off the list rather than a saving.
2 Check porcelain against ceramic for wet areas and outdoor applications, where porcelain’s low water absorption does the heavy lifting.
3 Decide glazed or unglazed last, once the grade and construction are settled. This is where you trade design variety against maximum durability.

Related: How to Choose the Right Tiles for Your Bathroom | Choosing Bathroom Tiles: A Practical Guide for Mandurah

Other Tile Quality Factors

Porcelain vs Ceramic Construction

Porcelain tiles are manufactured under extreme pressure and fired at higher temperatures, making them denser and less porous than ceramic tiles.

This process creates a more durable, water resistant product. Porcelain’s low water absorption rate, typically under 0.5%, makes it ideal for wet areas and outdoor applications.

Glazed vs Unglazed

Glazed tiles feature a protective coating that adds colour, pattern and stain resistance. Unglazed porcelain tiles are full bodied, meaning the colour runs throughout the entire tile, making them the most durable option available.

With glazed tiles, you are investing in aesthetic variety and easier maintenance. With unglazed tiles, you are paying for maximum durability and suitability for exterior use.

Porcelain

Denser, less porous, water absorption typically under 0.5%. The choice for wet areas and outdoors.

Ceramic

More porous than porcelain and not fired as hard, which is perfectly fine in the right location.

Glazed

A protective coating adding colour, pattern and stain resistance. You are buying design variety and easier maintenance.

Unglazed

Full bodied, with colour running right through the tile. The most durable option available, and suited to exterior use.

Where the price difference actually goes

Paying for the look

At the lower grades, your money goes into intricate patterns, vibrant colours and unique finishes rather than into wear resistance.

Grades 1 and 2 Walls and low traffic

Paying for versatility

The mid range buys reliable everyday performance against foot traffic and moisture. This is where most renovation budgets are best spent.

Grade 3 Most popular in AU homes

Paying for endurance

At the top end you are buying resistance to wear, harsh conditions and chemical contact. Worth it for hardworking spaces, unnecessary in a quiet room.

Grades 4 and 5 Under 0.5% absorption for porcelain

Grading reflects wear and abrasion resistance only. Two tiles at the same grade can still differ in price based on construction, format and finish.

Related: Best Tiles for Coastal Homes | Most Popular Types of Bathroom Tiles

🏪 When to bring the question into the showroom

You are not expected to interpret a spec sheet on your own. These are the situations where a quick conversation is genuinely worth the trip:

  • You have found a tile you love and want to confirm it is rated for the surface you have in mind
  • You are comparing two similar looking tiles at very different prices and want to know why
  • The space is a wet area or outdoors and you are unsure whether porcelain is necessary
  • You are weighing glazed against unglazed and cannot picture the difference
  • You are tiling a laundry, an outdoor entertaining area or a home workshop and are not sure how far up the grades to go
  • You want to know where it is safe to spend less without regretting it in five years

Make an Informed Choice, Not a Guess

At Mandurah Tile & Bathrooms, we can show you the product specifications, explain the grading system, and recommend tiles that match both your aesthetic vision and practical needs. Contact us today to discuss your project. We are open Monday to Saturday and ready to help you make informed choices that deliver lasting value for your home.

Come in with a photo, a floor plan, or just a question. There is no pressure to decide on the spot, and no obligation to buy.

See the specifications, then see the tile

Visit us at 2/13 Fitzgerald Road, Mandurah, or call ahead if you would like to set aside time to talk through your project. Serving Mandurah, Rockingham, the Peel Region and surrounds.

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  • Lee Knowles

    Lee has over 25 years experience in the tiling industry and is available onsite most days to offer his help and advice to our customers. His long term vision, is to make Mandurah Tile & Bathrooms a one stop shop, where the customer can select all the products for their bathroom projects in one place.