When it comes to construction and landscaping projects, MOT Type 1 is a term that frequently arises. But what exactly is MOT Type 1, and why is it so crucial? Let's delve into the details.

What is MOT Type 1?

MOT Type 1, also known as DOT Type 1, is a granular sub-base material specified by the Department of Transport (DOT). It is the most commonly used approved sub-base in the construction industry. To qualify as MOT Type 1, the aggregate must adhere to the Department of Transport Specification for Highway Works, clause 803 (SHW 803). This ensures the material meets rigorous standards for load-bearing and compaction.

Composition of MOT Type 1

MOT Type 1 is typically composed of crushed granite, limestone, basalt, or gritstone. The aggregate is crushed into sizes ranging from 40mm down to dust, creating a blend that is easy to compact and offers excellent load-bearing properties. It can also be made from clean crushed concrete. This mix of particle sizes helps to form a dense, stable sub-base once compacted.

Uses of MOT Type 1

MOT Type 1 is exceptionally versatile and is used for various applications, including:

• Road Construction: As a base layer for roads, it provides a stable foundation for asphalt or concrete layers.
• Driveways and Patios: Ideal for constructing driveways and patios, ensuring a solid, level base that can support the weight of vehicles and foot traffic.
• Paths and Walkways: Offers a stable base for pathways and walkways, helping to prevent sinking and movement over time.
• Foundations: Used in the foundations of structures such as sheds, garages, and extensions to ensure a firm and even base.
• Drainage Solutions: Suitable for drainage applications, including under permeable paving systems and around drainage pipes.

Why Choose MOT Type 1?

The key benefits of using MOT Type 1 include its durability, ease of compaction, and cost-effectiveness. These quarried aggregates are a preferred choice for many construction and landscaping projects.

• Certified Quality: Complies with the Department of Transport Specification for Highway Works, ensuring high quality.
• Excellent Load-Bearing Qualities: Ideal for high-traffic areas such as highways, car parks, and footpaths.
• Versatile Applications: Perfect for various sub-base applications including roads, driveways, patios, and building foundations.

Is MOT Type 1 Suitable for a Driveway Sub-Base?

Yes, MOT Type 1 is an excellent choice for driveway sub-bases, especially when the finished surface is gravel or tarmac. For block-paved driveways, consider using MOT Type 3 to meet Sustainable Urban Drainage (SUDS) regulations.

At Mainland Aggregates Ltd, we pride ourselves on being one of the leading suppliers of MOT Type 1 Sub-Base. We offer this essential product in bulk bags or loose by the tonne, ensuring you receive the right quantity for your project. Our extensive network of suppliers and hauliers across the UK allows us to deliver competitively priced, high-quality materials straight to your door.

Choose MOT Type 1 for your next project and ensure a stable, reliable foundation. Contact Mainland Aggregates today to place your order and get expert advice on all your aggregate needs.