Blue bricks, also known as engineering bricks, are known for their strength, durability, and resistance to moisture. They are typically made from specific types of clay fired at high temperatures in low-oxygen environments, resulting in their characteristic blue color.

Due to their properties, blue bricks are commonly used for:

• Foundations and Groundworks: Their strength and moisture resistance make them ideal for foundations, basements, and retaining walls, where they can withstand heavy loads and protect against moisture damage.
• Sewers and Drainage: Blue bricks are used to construct sewers, maintenance holes, and drainage systems because they are impervious to water and can withstand harsh underground conditions.
• Engineering Structures: They are used in bridges, tunnels, and other engineering structures where strength and durability are crucial.
• Paving and Steps: Their hard-wearing properties make them suitable for paving pathways and steps that must withstand heavy foot traffic.
• Damp Proof Courses (DPC): Blue bricks are often used as wet-proof courses in walls to prevent moisture from rising and causing damage.
• Decorative Purposes: In some cases, blue bricks are used for their aesthetic appeal to create a distinctive, dark, urban look in buildings.

Here are some additional details and examples:

• Staffordshire Blue Bricks: This is a specific type of blue brick known for its high quality, and it has been used in many historic buildings and structures.
• Reclaimed Blue Bricks: Due to their durability, reclaimed blue bricks are often sought after for renovation projects and can add character to a building.
• Modern Use: While traditionally used for engineering purposes, blue bricks are also used in contemporary architectural designs for their unique aesthetic.