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{{home_work}} For both commercial and domestic use
{{thumb_up_alt}} Approved by The Ministry of Transport
Technical Specification
Technical Specification
URN:
6001007
Product:
MOT Type 1
Application:
Driveways, Patios, Road Sub-bases
Material Type:
Crushed Carboniferous Limestone/Granite
Size:
Bulk Bag
Weight:
800kg
Sales Unit:
Bag
Density:
1700kg/m3
Product Standard:
SHW Clause 803 / BS EN 13242
Grade:
40mm down to dust
Colour:
Shades of Grey to Brown
Status:
Non-Returnable
Product Overview
MOT Type 1 Sub Base, available in an 800kg bulk bag, is a graded granular aggregate consisting of crushed rock or concrete with a particle size distribution ranging from 40mm down to dust. This composition facilitates high-density compaction, creating a stable foundation that prevents structural movement in sub-base applications.
The material provides consistent load-bearing capacity for surfaces subjected to vehicular or pedestrian traffic. It is engineered to compact into a dense, low-permeability layer, making it suitable for applications where structural stability is the primary requirement. This product is supplied in an 800kg bulk bag.
Please Note: Product may arrive in shades of grey to brown. Moisture content affects weight; each bag may vary by +/- 5%. Quality and grading remain consistent.
Features & Benefits
Clause 803 MOT Type 1 compliance: Approved to the Specification for Highway Works, ensuring suitability for demanding sub-base use.
Graded crushed aggregate (40mm to dust): Compacts tightly with minimal voids, delivering strength and stability.
Versatile foundation material: Suitable across domestic, commercial, and civil engineering projects.
Durable load-bearing capacity: Distributes heavy loads evenly, preventing rutting and settlement in finished works.
800kg bulk bag supply: Reduces downtime and reordering, keeping larger projects on schedule.
HIAB crane offloading: Delivered via a vehicle equipped with a heavy-duty crane arm to allow for precise kerbside placement. Ensure the delivery site has sufficient access for a large HGV and is clear of overhead obstructions for crane operation.
Applications
Paving and Patios: Acts as the primary sub-base layer to prevent sinking, shifting, or cracking of paving slabs or block paving.
Driveways: Creates a robust foundation capable of withstanding the weight of residential vehicles without developing ruts or potholes.
Pathways and Walkways: Offers a stable foundation for public footpaths and garden paths to suppress weed growth from below.
Artificial Grass: Standard 75mm-100mm sub-base specification provides a firm, load-bearing foundation beneath the final sharp sand and turf layers.
Shed and garden building bases: A 100mm compacted layer of MOT Type 1 provides a stable, interlocking sub-base for timber-framed sheds, summerhouses, and garden offices. The angular crushed stone creates a firm, load-bearing platform that resists settlement and improves drainage beneath the structural floor.
Car Parks: Provides a high-density sub-base capable of supporting the repeated, heavy-load demands of commercial or public parking areas.
Road and Highway Construction: Serves as the industry-standard, certified material for the base layer of public roads and highways.
Temporary Site Access: Functions as a hard standing on construction sites to support heavy machinery and prevent equipment from bogging.
Fill Material: Utilised for trench backfilling, over-site fills, and general levelling to prepare uneven ground.
Installation Guidance
Site preparation: Clear the area of vegetation and topsoil to reach a stable sub-grade, ensuring a slight fall for water runoff if required.
Geotextile placement: Install a geotextile membrane across the entire area to prevent the sub-base from migrating into the underlying soil.
Layer distribution: Spread the aggregate evenly to a depth of at least 100mm; for depths exceeding 150mm, apply the material in two separate layers.
Compaction: Apply force using a mechanical vibrating plate compactor to each layer until the surface is firm and shows no measurable movement.
Finishing: Verify final levels to ensure the substrate is perfectly prepared for the paving or concrete layer, maintaining the intended slope.
Compliance & Performance
Material specification: Crushed rock, slag, or concrete meeting Department of Transport specifications for granular sub-bases.
Highway compliance: Certified material meeting Clause 803 of the Specification for Highway Works.
Permeability notice: Because this material contains fine dust that fills the gaps between stones, it does not allow water to pass through easily; therefore, it should not be used for drainage systems designed to soak water into the ground.
Important note: Always wear appropriate personal protective equipment (PPE) including gloves and eye protection when handling, as the material can be abrasive and dusty.
What Customers Are Saying
Customers consistently highlight this MOT Type 1 sub-base as a top-tier choice, praising its excellent compaction and consistent quality across a variety of projects, including driveways, patios, and shed bases. Beyond the product itself, users frequently rave about the company’s helpful online project calculator, which makes it easy to order the correct amount of material and eliminates guesswork. Furthermore, customers are highly satisfied with the seamless service, noting reliable, on-time deliveries and skilled drivers who go the extra mile to position bulk bags exactly where needed.
Summarised by AI from customer reviews.
Customer Reviews
5
4
3
2
1
5/5based on 61 reviews
Great price!
Donna Wise on
What really impressed me was the project calculator on the website. I was dreading the math for my garden path, but the calculator made it incredibly simple to figure out exactly what I needed.
Ant Jackson on
Great product. We used this to prep the ground for our block paving driveway.
Preston Lane on
Well priced MOT and fast delivery times
Nathan Pugh on
We had a path that was sinking. Dug it out, put down a good layer of this MOT, and it’s rock solid now
Morgan Bonne on
5 star price, service, and MOT!
Faris James on
good quality MOT for my client
Janusz P on
Perfect material for the base of my new patio area
Jarrett Clarke on
I used the MOT for my driveway renovation, and the quantity recommended by the calculator was perfect. Excellent material quality too!
Ashraf Sunil on
Wonderful company
Kay Thorne on
Got this for an artificial grass project. Provided a solid base.
Swayatha T on
I can't fault Materials Market, saved me a fortune and really good product.
Nadia Stanyer on
bargain for this amount of Type 1. No dirt or clay. smooth drop off.
Perry Boyd on
Used this for a shed base and couldn't be happier with the result. I used the online calculator before ordering, which meant I didn't over-order and have leftover bags cluttering the driveway. It’s a really handy tool.
Steve P on
Great base material, prompt delivery.
Ben Bigglesworth on
Used for base for a patio. bargain. Solid sub base. Delivered on time.
James Green on
Bought a bulk bag for a patio base. Solid stuff, compacted down really well with the wacker plate. No movement at all after the slabs went down. Delivery was on time, too.
Elisha A on
Used a few bags to create a level base for a new driveway. Best price I could find on the internet.
Abdelhakim Rahi on
A* star service and cheap prices
Bri Reed on
best priece. Compacts perfectly. Delivered on time.
Abdelnadi B on
It's rare to find a company that values communication as much as the quality of the product they sell. I needed a significant amount of MOT Type 1 for a large-scale landscaping project in my back garden. The logistics team kept me updated via text, and the delivery arrived exactly when promised. The material itself was clean and free from large, unwanted debris.
My landscaper who was renovating my garden and patio area was really happy with the MOT.
Debra Keane on
Used this for a shed base. It’s exactly what you expect from Type 1. Good mix of stones, packs tight. Delivery driver was helpful and dropped it exactly where I asked
Ab H. on
Quality product and great price. I used this for my patio base.
Brice Abaz on
Great communication from the team on the delivery slot. The MOT was high quality, clean, and did the job perfectly for our garden path. Would definitely buy again.
Aamar Nahid on
Used this under our new patio
Akbal W. on
I’ve spent the last two weekends block paving my front driveway, and I cannot stress enough how important it was to get the sub-base right.
I ordered several large bulk bags of this MOT Type 1, and the consistency was spot on.
I was worried about the delivery given my narrow access, but the driver was an expert and managed to drop it exactly where I needed it without clipping the gatepost.
If you’re doing a DIY driveway, don't skimp on the sub-base; spend the extra on quality material like this.
Sam J on
Slight delay on order, but good quality MOT
Dani Pedmova on
Needed this to level out an uneven patch of the garden before building a summerhouse.
Cheung B on
great quality
Gary Scott on
As someone who hasn't done much paving before, I was really intimidated by the whole process of calculating sub-base layers. I found this site, used their calculator, and it took all the guesswork out of the project. It’s brilliant. The MOT is great quality, and I had no issues with the delivery.
Elias K on
Delivery was done well - thanks to the driver!
Peter Hall on
Good value for money
Arun H on
High quality aggregate. No complaints.
Michael Brown on
This was the best priced MOT I could find, fast delivery too!
John F on
Perfect for sub-base work. Highly recommend
Rachel G on
Very pleased with the service and the product
Robert Taylor on
Fantastic service, Ben was really helpful!
Linda Harris on
Good material, did the job for the shed base.
James B on
It’s done the job well for our garden room base.
Mark Hill on
Great service. Bag was full and well-packaged.
David Miller on
Great quality MOT, compacted perfectly. Affordable price and delivered on time. Couldn’t be happier!
Dave Seals on
Amazing service and affordable price
Peter T on
best price I could find on the internet
Paul Wright on
really happy with the service and price
Sam R on
Compared a few local suppliers, and this was the best price by far for MOT Type 1. Delivered when they said they would
Doyle Jordan on
Great product, solid and compact.
Jimmy G on
5 star!
Vlad H on
Bit skeptical of the cheap price, but really happy when it arrived on time for my project
Harry Rust on
Easy to order however communication on the delivery day was non existent. It was supposed to arrive Friday as they didn’t deliver weekends and little did I know come 2pm Saturday a delivery truck would be parking up outside my house. Can’t complain as it was the cheapest I could find at the time and the product was great. Would buy again but would make sure to allow a margin of error on delivery times.
Chris Hutchison on
Good compaction for my patio base. Reliable delivery, and a fair price. Hard to fault.
Read Hunter on
Really happy from start to finish. The calculator helped me order the right amount of bags. The service was really good and the price was the best I could find.
Jane B on
Fast delivery and the sub base was exactly what I needed.
Sarah Jenkins on
Perfect for my new driveway base. Good quality stone.
Kieron Walsh on
Cheap price on the bulk bag and fast delivery
Paul Joost on
We had a really uneven slope in the garden. We used this to level it out before laying artificial grass
Chris Larch on
Put this down and it gave me a firm base for my new patio
Nam Muri on
Used this for a driveway extension. The quality wass consistent, no large debris - well priced.
Tahir Guvvi on
Used a few bags for a path. No complaints
Carter J on
Delivered on time and the quality of the MOT was spot on for our garden renovation.
Willem S on
The driver was a legend and managed to get the bag exactly where I needed it in the driveway.
Kinson Paton on
helpful delivery driver dropped off the MOT just where I needed it. Excellent delivery service. Would buy again!
MOT Type 1 is not designed to be free-draining.
While it isn't completely waterproof like concrete, it contains a high proportion of dust and very small particles that fill the gaps between the larger stones to create a rock-solid, load-bearing surface. When properly compacted, the dust and particles settle together and significantly slow down water flow.
Should you wet MOT Type 1 before compacting?
Yes, you should lightly mist MOT Type 1 before compacting, but you must avoid soaking it. Adding a small amount of water is a professional technique used to achieve maximum density.
How many bulk bags of type 1 do I need?
To calculate the quantity needed, multiply the area (square meterage) by the depth and then by 2.2 to find the total tonnage, as compacted MOT Type 1 is much denser than loose stone.
You can simplify this process by using the calculator available on our product page to ensure you order the perfect amount for your project.
How do I compact MOT type 1?
To compact MOT Type 1 effectively, you must use mechanical force (like a wacker plate) to lock the various sizes of stone together into a solid, load-bearing mass.
Simply treading it down or using a hand rammer is usually insufficient for structural projects like driveways or patios.
How deep should MOT type 1 sub-base be?
The depth of your MOT Type 1 sub-base depends entirely on the intended load - whether you are walking on it or driving a vehicle over it.
Footpaths & Patios: 50mm - 100mm
Standard Domestic Driveways: 100mm - 150mm
Heavy Traffic/Soft Ground: 200mm+
What's the difference between type 1 MOT and type 3 MOT?
Type 1 MOT contains crushed stone and fines (dust), which helps it compact tightly and create a strong, solid base - ideal for driveways, patios, and general foundations. Type 3 MOT is similar in size but has no fines, making it free-draining - perfect for permeable driveways and areas where water drainage is important.
Is this 20mm sub base?
MOT Type 1 contains varying sizes of stone within it. These range from 40mm down to dust. When the material is compacted, these stones are crushed and consolidated into a firm sub-base or foundation suitable for many applications.
How much MOT+Sand+Cement require for 100 sq meter with 100 mm thickness
To answer the question accurately we would need some more detail, such as the application the materials are being used for. However, the following might give you some guidance which we hope will be useful.
For a patio/paved area that is to be used for walking on only, the total depth of 100mm could be divided into 50mm of MOT Type 1, and 50mm of a sand/cement mortar bed to lay the paving onto. A typical mix for paving mortar is 5:1.
In this case you would need approximately 11.5 tonnes or 14 bulk bags of MOT 1, 8 tonnes or 10 bulk bags of sharp sand , and 64 bags of 25kg cement.
Due to the nature of landscaping, quantities will vary, and the amounts will obviously change if the ratio of MOT to mortar is adjusted. We would always recommend surveying very carefully before ordered, and consulting a professional builder or landscaper if in doubt.
What size area will this cover please?
The area covered depends on the depth, or thickness, of the material being installed. However, please note the following general guidance:
Footpath: The recommended depth to lay MOT is 50mm (compacted) - so our bulk bag would cover approximately 8-10 square metres.
Patio: The recommended depth to lay MOT is 100mm (compacted) - so our bulk bag would cover approximately 4-5 square metres.
Driveway: The recommended depth to lay MOT is 150mm (compacted) - so our bulk bag would cover 2-3 square metres.
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