Aggregates are used across all kinds of construction projects, from new homes and roads to driveways, patios and landscaping.
Across the North West, including Manchester, Liverpool, Warrington, Chester and Stockport, these materials are needed for everything from creating strong foundations to improving drainage.
But it’s important to know that not all aggregates do the same job. Crushed stone, gravel, sand and other materials have different properties and uses – but what exactly are they?
Keep reading to learn ten of the most common types of aggregate and where they’re typically used to determine which is better for your project.
10 Types of Aggregates: Quick Overview
Different aggregates suit different jobs. Some provide a strong base, others help with drainage or concrete, while some are mainly used for their appearance.
Here’s a quick look at the 10 types covered in this article:
| Aggregate | Common Uses |
| Crushed stone | Roads, foundations, concrete and paths |
| Gravel | Driveways, drainage, paths and landscaping |
| Sand | Mortar, concrete, screeding and paving |
| Recycled aggregate | Sub-bases, hardstanding and trench filling |
| Ballast | Concrete for foundations, floors and paths |
| MOT Type 1 | Driveway, road and patio sub-bases |
| Limestone aggregate | Filling, sub-bases, concrete and landscaping |
| Granite aggregate | Roads, concrete, drainage and driveways |
| Slate aggregate | Garden paths, borders and decorative areas |
| Decorative aggregate | Driveways, patios, paths and landscaping |
Keep reading to learn more about each aggregate and its use!
1) Crushed Stone
Crushed stone is made by breaking natural rock, such as limestone or granite, into smaller pieces.
Unlike naturally rounded gravel, crushed stone usually has rough, angular edges. These pieces lock together when compacted, which makes the material particularly useful when you need a firm and stable base.
You’ll commonly find crushed stone beneath roads, foundations and hardstanding areas, as well as in drainage systems and general groundworks. Smaller grades can also be used in concrete and paving.
2) Gravel
Gravel is one of the most recognisable aggregates and can be used for both practical and decorative jobs.
The stones are generally smoother and more rounded than crushed stone, particularly when they’ve been naturally weathered. Gravel is available in different sizes and colours, so the right choice will depend on what you’re using it for.
It’s commonly laid on driveways and paths, used around gardens and landscaping, or added to drainage trenches where water needs to move freely through the material.
3) Sand
Sand might not be the first thing that comes to mind when you think of aggregates, but it’s one of the most widely used.
Different types of sand suit different jobs. Building sand is typically mixed with cement and water to make mortar for bricklaying and blockwork, while sharper grades are commonly used for concrete, screeding and paving.
Its smaller particles also help fill the spaces between larger aggregates when different materials are mixed together.
4) Recycled Aggregates
Not every aggregate needs to come directly from a quarry. Materials recovered from demolition and construction sites, including concrete and brick, can often be crushed, screened and reused.
Recycled aggregates are regularly used for sub-bases, hardstanding, trench filling, temporary access roads and general groundworks.
They’re particularly useful for projects where appearance isn’t important and can help reduce the amount of usable construction material being sent for disposal.
5) Ballast
If you’re making concrete, there’s a good chance you’ll come across ballast.
Ballast is a coarse mixture containing sand and larger pieces of stone or gravel. When combined with cement and water, it can be used to create concrete for a variety of general building jobs.
You’ll often find it used for foundations, floors, paths, slabs and other concrete structures.
6) MOT Type 1
MOT Type 1 is one of the most commonly used materials for creating a solid sub-base.
It contains a carefully graded mixture of crushed stone and finer particles. Once compacted, the different-sized pieces fit tightly together to create a strong and relatively even layer.
That’s why MOT Type 1 is commonly used underneath driveways, patios, paths and roads before the finished surface is added.
7) Limestone Aggregate
Limestone is a versatile aggregate that’s used across both construction and landscaping.
Once quarried and crushed, it can be produced in several different sizes. Finer limestone can be useful for filling and levelling, while larger grades are often used beneath roads, paths and other surfaces.
Certain limestone aggregates also have an attractive natural finish, making them suitable for areas where the stone will remain visible.
8) Granite Aggregate
Granite is a hard-wearing natural stone, which makes granite aggregate particularly useful in areas that need to cope with regular traffic or heavy use.
It can be used in roads, concrete, driveways, paving and drainage systems. Smaller granite chippings are also popular for garden paths and other decorative areas.
Its durability makes it a useful choice for projects where the material is likely to experience plenty of wear.
9) Slate Aggregate
Slate is easy to recognise thanks to its flat, angular pieces and distinctive colouring.
It’s particularly popular in landscaping, where slate chippings can be used around plant beds, borders, pathways and other areas where the aggregate becomes part of the finished design.
Some grades can also be suitable for drainage and construction work, although the material should always be checked against the requirements of the particular project.
10) Decorative Aggregates
Sometimes the way an aggregate looks matters just as much as what it does.
Decorative aggregates include materials such as coloured gravel, limestone, marble chips and polished stone. They’re commonly used to finish driveways, pathways, patios, borders and landscaped gardens.
With plenty of colours, stone types and sizes available, they can be used to create anything from a subtle natural finish to something that stands out.
Choosing the Right Aggregate for Your Construction Project
The right aggregate will depend on the job you’re doing. A driveway or patio will usually need a compactable sub-base, while drainage work requires material that allows water to move through it. Concrete needs the right combination of fine and coarse aggregates.
Where you buy your materials can matter too, especially when you’re ordering several tonnes at a time. Using a supplier close to the project can make delivery more practical and gives you somewhere to discuss the grade and quantity you need.
For projects across the North West, UK Aggregates and Plants supplies aggregates across Warrington and the surrounding areas, providing materials for building, groundwork and landscaping projects. They’re highly rated with a 4.8 out of 5-star rating on Google as of September 2026.
Before ordering, check the specifications required for the job and calculate how much material you’ll actually need. Getting these basics right can save you from paying for excess aggregate or running short halfway through the work.
