Buy 23kg small bags for 5 for the price of 4!

MOT Type 1 is a crushed carboniferous limestone which is ideal for creating a hardcore base when laying patios, driveways and concrete bases, as well as many other domestic and commercial applications. This 40mm to dust hardcore will compact down well and is therefore the ideal product to use to create a solid foundation to start off your project. This versatile Type 1 sub-base aggregate also meets the requirement of the department of transport specification for highway works. Available to buy in jumbo bulk bags, half bulk or 23kg small bags - see our bag size guide diagram.

Bag sizes and coverage

Our construction aggregates are available in jumbo bulk bags, half bulk or 23kg small bags, which are ideal for smaller projects. 

• A full 850kg jumbo bulk bag will cover approximately 8-10m² at a depth of 50mm.
• A 450kg half bulk bag will cover approximately 4-5m² at a depth of 50mm.
• You'll need approximately three 23kg small bags to cover 1m² at a depth of 50mm.

Please note that these coverage measurements are approximate due to compaction of the stone. It's advisable to have at least a 100mm depth of hardcore, before compaction, when laying a patio or block paving. 

MOT Type 1 vs MOT Type 3 – Which Should You Use?

MOT Type 1 hardcore is the most common choice for building a firm, compacted sub-base for patios, paths, driveways and concrete bases. The mixture of crushed stone and fine particles compacts tightly to provide a strong, stable foundation.

For projects where a free-draining sub-base is required, MOT Type 3 hardcore is a better choice. This type of hardcore contains fewer fine particles which allows water to drain away more easily. This makes it suitable for many permeable paving systems and other surfaces where drainage is important. Always check the requirements of your chosen paving system and get advice from the AWBS team at your local branch.

Visit your local AWBS branch

AWBS have three well stocked branches in Oxford, Yarnton and Swindon and we have helpful staff on hand to offer advice and answer any questions you may have. You can find your nearest branch here! 

Free delivery!

Don’t forget that AWBS offer fast, free delivery to local areas and we aim to deliver in stock products within 1-5 working days where possible. We fulfil our orders using our own fleet of vehicles that are operated by our highly trained delivery drivers. If you want to check if you qualify for free delivery, you can use our handy postcode checker.