Best Sub-Base for Driveways in the UK (MOT Type 1 Guide)

Choosing the Right Sub-Base for Your Driveway

Choosing the right sub-base is one of the most important steps when building a driveway or patio.

At UK Building Supplies, MOT Type 1 is the most commonly used sub-base material across the UK — providing strength, stability, and long-term performance for driveways of all sizes.

What Is MOT Type 1?

MOT Type 1 is a crushed aggregate made from limestone or granite, widely used as a sub-base for driveways, patios, and paths.

• Compacts to form a solid, stable base
• Ideal for domestic driveways
• Suitable for vehicles and heavy loads

👉 Shop MOT Type 1 bulk bags

Why MOT Type 1 Is Best for Driveways

For most UK driveways, MOT Type 1 is the go-to choice.

• Creates a strong foundation
• Prevents sinking and movement
• Works with block paving, resin, and gravel driveways

How Much MOT Type 1 Do You Need?

As a rough guide:

• 1 bulk bag covers approx 8–10m² at 50mm depth
• Most driveways require 100–150mm depth

Always order slightly more to allow for compaction.

What Goes on Top of MOT Type 1?

Once your sub-base is installed, you can finish your driveway with:

• 20mm shingle bulk bags (most popular)
• Decorative gravel
• Block paving

👉 Shop 20mm shingle bulk bags

Delivery Across the UK

At UK Building Supplies:

• Nationwide delivery available
• Typically 1–3 working days
• Delivered via HIAB crane
• 1-hour pre-delivery call

Final Thoughts

For most projects, MOT Type 1 bulk bags provide the best balance of strength, reliability, and value — making them the ideal choice for driveway foundations.

👉 Read our guide on best gravel for driveways in the UK