What Are Bricks Made Of? Materials, Types & Buying Guide
What Are Bricks Made Of? A Complete Guide for Builders and Homeowners
Bricks have been used in construction for thousands of years and remain one of the most trusted and durable building materials in the UK. From new builds and extensions to garden walls and commercial developments, bricks are a core part of modern construction. But what are bricks actually made of, and why does it matter when choosing materials for your project?
Understanding how bricks are made helps you choose the right type for strength, durability, and appearance. Whether you're sourcing cheap bricks for a budget project, need high-performance engineering bricks, or are focused on accurate brick matching, knowing the fundamentals gives you a clear advantage.
Shop Bricks Online TodayThe Core Materials Used to Make Bricks
Most traditional bricks are made using natural, abundant materials. While the exact composition varies depending on the type of brick, the core ingredients remain largely the same across the industry.
Clay – The Foundation of Bricks
Clay is the primary material used in brick production. It is extracted from the ground and processed to remove impurities before being shaped into bricks. The mineral composition of the clay has a direct impact on the brick’s strength, colour, and durability.
For example, clay with a higher iron content produces traditional red bricks, while other mineral variations create buff, brown, or grey tones. This is why brick colours vary across different regions in the UK.
Sand and Additives
Sand is often added to improve the workability of the clay and reduce shrinkage during the drying process. Other additives such as lime and iron oxide can be included to enhance strength, control colour, and improve resistance to environmental conditions.
Water
Water binds the materials together and allows the clay to be shaped. The moisture level must be carefully controlled, as too much or too little water can affect the quality of the final product.
View Popular Facing BricksHow Bricks Are Manufactured
The process of turning raw materials into durable bricks involves several carefully controlled stages. Each step plays a key role in ensuring consistency and performance.
Preparation and Mixing
Clay is crushed and mixed with water and additives to create a consistent material. This ensures uniform strength and appearance across every brick produced.
Shaping and Moulding
The clay is shaped using moulds or extrusion machines. Many bricks are perforated to reduce weight and improve mortar bonding during construction.
Drying
Bricks are dried to remove excess moisture before firing. This stage prevents cracking and ensures structural integrity.
Firing in Kilns
Bricks are fired at temperatures exceeding 1,000°C. This process hardens the material and gives bricks their final strength, durability, and colour.
Browse Multi-Facing BricksTypes of Bricks and Their Uses
Different projects require different types of bricks, and choosing the right one is essential for both performance and aesthetics.
Facing Bricks
Facing bricks are designed to be visible and are available in a wide range of colours and textures. These are ideal for external walls where appearance matters.
Engineering Bricks
Engineering bricks are manufactured for strength and durability. They offer high compressive strength and low water absorption, making them ideal for structural applications such as foundations and damp-proof courses.
A popular example is the Wienerberger K209 Blue Engineering Brick, widely used across UK construction projects.
Common Bricks
Common bricks are typically used in areas that will be covered or rendered. They are often chosen when sourcing cheap bricks for cost-effective builds.
Why Brick Composition Matters
The materials used in bricks directly impact their performance. Stronger bricks with lower water absorption are better suited for external and structural use, while lighter bricks may be used internally.
Choosing the correct brick ensures long-term durability, reduces maintenance, and improves the overall quality of your build.
Find the Right Bricks for Your ProjectBrick Matching for Extensions and Renovations
When extending or repairing a property, accurate brick matching is essential. Matching colour, texture, and size ensures the new work blends seamlessly with the existing structure.
Weathering, age, and regional variations all play a role, so sourcing the closest match possible is key to achieving a professional finish.
Environmental Impact of Brick Production
Modern brick manufacturing has become more environmentally efficient. Many manufacturers now recycle materials and use energy-efficient kilns to reduce emissions.
Bricks themselves are also highly sustainable. They have a long lifespan, require minimal maintenance, and can often be reused or recycled, making them an environmentally responsible building choice.
How to Choose the Right Bricks for Your Project
When selecting bricks, consider the following factors:
• Structural requirements
• Exposure to weather conditions
• Desired appearance and finish
• Budget and availability
For structural work, engineering bricks are often the best choice. For visible areas, facing bricks provide the finish needed to enhance your project.
Shop All Bricks & BlocksWhy Buy Bricks from JJ Building Materials?
At JJ Building Materials, we supply a wide range of high-quality bricks from trusted UK manufacturers. Whether you’re a trade professional or homeowner, we make it easy to find the right materials at competitive prices.
With reliable delivery and a wide product range, you can source everything you need in one place.
Buy Bricks Online NowFinal Thoughts
Bricks may seem simple, but their composition and manufacturing process are carefully engineered to deliver strength, durability, and visual appeal. By understanding what bricks are made of, you can make more informed decisions and achieve better results on your project.
Explore our full range today and build with confidence using quality materials from JJ Building Materials.