Concrete verses Clay Bricks
Can You Paint Brick? Understanding the Basics
Choosing the right building material is key to construction project, whether it’s a new-build home, an extension, or a full-scale renovation. Two of the most widely used options are concrete and clay brick, each with its own strengths, drawbacks and best-fit applications. Knowing how they differ can help you make a more informed choice for your next project.
Manufacturing and Material Composition
Concrete is produced by mixing cement, aggregate (such as sand or gravel) and water, which then cures into a solid, versatile material. It can be poured into virtually any shape, making it ideal for foundations, structural elements and large-scale builds.
Clay brick, on the other hand, is formed from natural clay that is moulded and then fired at high temperatures in a kiln. This firing process gives brick its characteristic strength and colour, which can vary depending on the clay source and firing conditions. The fundamental difference in how each material is made has a knock-on effect on everything from texture to long-term performance.
Strength, Durability and Structural Performance
Both materials are prized for their durability, but they behave differently under heavy loads. Concrete boasts excellent compressive strength and is often reinforced with steel to improve its tensile capabilities, making it a go-to choice for large structures, bridges and multi-storey buildings.
Clay brick, meanwhile, has a long track record of standing the test of time: many historic UK buildings, some centuries old, are still standing thanks to well-laid brickwork. Brick tends to perform well against weathering and doesn't suffer from the same cracking issues concrete can develop if not properly reinforced or cured.
Thermal Performance and Energy Efficiency
When it comes to keeping a home warm in winter and cool in summer, thermal mass plays a big role. Concrete has a high thermal mass, meaning it absorbs and releases heat slowly, which can help regulate indoor temperatures but may require additional insulation to meet building regulations.
Clay brick also offers decent thermal mass, along with good moisture regulation, helping to manage condensation within cavity walls. For homeowners concerned about energy bills, the choice between the two often comes down to how the wider wall system (insulation, cavity design and finishes) is put together, rather than just the material alone.
Environmental Impact and Sustainability
Sustainability is sometimes a deciding factor for builders and homeowners. Concrete production is energy-intensive and a major source of carbon emissions, largely due to the cement manufacturing process.
However, concrete structures often have long lifespans and some concrete can be recycled at the end of its life. Clay brick production also requires substantial energy for firing, though bricks are highly durable and reusable: reclaimed bricks are frequently repurposed in new builds, giving them a strong sustainability case when it comes to lifecycle and reuse.
Cost, Aesthetics and Practical Application
Cost is often the deciding factor for many projects. Concrete is generally cheaper and faster to work with for large-scale or structural applications, while clay brick tends to carry a higher price tag but offers a timeless, textured aesthetic that many homeowners favour, particularly for period properties or traditional-style new-builds.
Brick also requires less maintenance over time and doesn't need rendering or painting to look finished. At the end of the day, the best choice depends on your project's scale, budget, and desired look, concrete suits modern, functional builds, while clay brick remains a popular choice for character.
Speak to UK Brick Slip Suppliers
To create excellent-looking facades, brick slip systems are ideal. Modular Clay Products have partnered with some of the UK’s leading brick manufacturers to offer a tremendous range of brick slip solutions.
You can browse our range of products using the Brick Finder tool and compare two products directly. But if you are looking for something more bespoke, speak to one of our experienced sales team, and we can discuss brick blend options for you.