What is the Standard Brick Size in Australia?

Curious about brick dimensions used in Australia? We take a look at the standard sizes you’ll find and also discuss some other things you’ll want to keep in mind.

Housing, offices, public buildings, even the humble garden shed. Every day, we interact with structures that, at their core, are nothing more than a collection of small, rectangular objects.

They’re called bricks. But have you ever wondered about their sizes?

In this article, we’re getting down and dirty with brick sizes in Australia, exploring the variations, why they matter, and how they stack up (pun intended) against international standards. Let’s jump right in.

The Standard Dimension

Your everyday, run-of-the-mill Australian brick has pretty specific dimensions. It measures 230 mm in length, 110 mm in width, and stands 76 mm tall.

Why so? The reasons are surprisingly straightforward: it’s cost-effective, simple to handle, and works well with many other construction materials.

Room for Variation

Like a batch of homemade cookies, bricks can vary slightly in size—no two are exactly alike. These minor differences come from small variations in the manufacturing process.

Bricks in a Pallet | Building & Landscaping Materials

But don’t sweat it; they don’t throw off the final result in any significant way. The construction industry even has a system for measuring these differences, called Dimensional Quality Levels, made up of DW1, DW2, and DW0 categories.

A standard clay brick typically weighs slightly under 2.5 kgs. But this, too, can fluctuate depending on the type of brick, the manufacturing methods, and the materials used.

Other Types of Bricks

When we move from the world of exterior walls to the realm of internal walls, the brick size changes.

Larger than standard bricks, they measure 162mm in height, 305mm in length, and 90mm in width.

The reasons behind this? These bigger bricks save time and effort in construction. The fewer joints between them result in increased wall strength and stability.

Now, let’s imagine you’re eyeing a boundary wall project. You’ll want to get acquainted with double-height or two-course bricks.

These are twice as high as a standard brick and come in at 38mm in height, 230mm in length, and 110mm in width.

By reducing the number of bricks needed, they cut down on construction costs and time. Plus, their unique pattern or design possibilities can give your wall an aesthetic boost.

Getting the Course Right

To the uninitiated, the term “brick course” might sound like a class you’d take at a trade school.

But in construction lingo, it refers to the height of a standard brick (76mm) plus the 10mm of mortar that binds it to the brick above. So, a brick course comes to a total of 86mm.

bricks | Building & Landscaping Materials

Why is this important? Well, an average mortar thickness of 10mm ensures standard doors and windows fit into the brickwork without a hitch.

Moreover, if you want a standard ceiling height of 2143mm, you’ll need to stack up 25 brick courses.

A Brick is Not Just a Brick

Brick sizes vary worldwide. In America, it’s 92mm x 57mm x 193mm. Over in the UK, they work with 101mm x 63mm x 215mm. Here in Australia, we stick to 110mm x 76mm x 230mm.

It’s not just the dimensions that differ. There are different types of bricks, each suited to a particular purpose.

Face bricks, designed for aesthetic appeal and to withstand external conditions, share dimensions with our standard Burnt Clay Bricks. Sand Lime Bricks offer an alternative to concrete bricks. And Brick Pavers, ideal for laying flat, are your go-to for constructing garden paths, roads, courtyards, and the like.

Understanding the standard brick size in Australia is essential, whether you’re a seasoned construction pro or a DIY enthusiast. Hopefully, this guide has given you a solid foundation of knowledge to build upon. Happy bricklaying!

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Steve Kropp

Based in Melbourne, Steve's passion is vegetable gardening, and he’s been writing about it for almost 5 years. He also loves all things DIY and is always looking for a new project. When not working on his own garden projects or blogging, Steve enjoys spending time with his family, cooking meals with produce harvested from his garden, and coaching his son’s footy team.


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