How to choose the right brick size for your build

Brick size plays a crucial role in every construction project, influencing everything from costs, timescales, and the overall design of your build.

At The Brick Warehouse, we supply several different sizes of bricks suitable for every project, but how can you be sure you're choosing the right size for the job?

In this article, our experts share everything you need to know about brick sizes, why they matter, and how to choose the right size for your build!

Why brick size matters

• Structural efficiency - Correct sizing ensures even courses, alignment, and stability.
• Aesthetic consistency - The right brick size helps maintain proportion and visual balance, especially when restoring existing walls or building an extension.
• Time and cost efficiency - Larger bricks can significantly reduce laying time, whilst standard sizes simplify sourcing and getting your hands on replacements.
• Design flexibility - Different brick sizes can achieve well-defined, distinct looks, from modern, sleek lines to traditional appearances.

Whether you're working on a new build project or restoring an older building, choosing the right brick size is crucial, and will help you avoid any costly adjustments later down the line.

Standard UK brick sizes

In the UK, the standard metric brick size is 215mm x 102.5mm x 65mm, and it's the go-to choice for most modern building projects to ensure consistency, easy handling, and compatibility across designs.

However, different jobs call for different brick dimensions. Below, we've outlined some of the most common types of bricks used in UK building projects, and the different types of projects they can be found:

Brick type	Typical dimensions (mm)	Best for
Standard metric-size bricks	215 x 102.5 x 65	Most modern buildings and general construction projects
Imperial-sized bricks	230 x 110 x 76	Restoring older heritage buildings, where matching the original structure is essential.
Engineering bricks	215 x 102.5 x 65	Structural work and damp-proof courses
Brick slips (AKA thin bricks)	215 x 65 x 20	Decorative facades and interior finishes

How to choose the right size bricks for your project

As mentioned above, the right brick size depends on the type of project you're working on and your design goals.

For new builds, standard metric sizes are usually the best choice, as they're easy to work with, cost-effective, and compatible with modern construction methods.

If you're extending or restoring an older property, matching the existing brick size (most often imperial) ensures a seamless look and consistent mortar joints. The smallest of variations can affect alignment, so make sure you measure carefully before ordering.

And finally, for feature walls or internal decorative finishes, thinner brick slips can help add texture and character without the weight of full-sized bricks.

Need help choosing the perfect brick size for your project?

When in doubt, our friendly experts at The Brick Warehouse can help you find the right size and style for your upcoming build.

We stock a variety of new and reclaimed bricks in all standard UK sizes, so no matter what you're working on, you're sure to meet your match.

Get in touch today by calling 0208 058 0528 or emailing info@thebrickwarehouse.co.uk for recommendations and tailored support!