Question 1

1. What are decorative aggregates?

Accepted Answer

Decorative aggregates are stone materials like gravel, chippings or slate, used mainly for landscaping and visible surfacing. They’re selected for colour, texture, and graded size rather than structural strength. These materials are used on paths, driveways, planting beds within landscaping schemes.

Question 2

2. What size of decorative aggregate should I use?

Accepted Answer

The size you need depends on the job in hand and the level of traffic expected. Smaller grades such as 10mm are often used in borders, planting beds, and lighter-use paths. Stones of this size create a neater finish and are easier to spread.

Mid-range grades such as 14–20mm are commonly used for paths and driveways because they interlock more effectively, helping reduce movement under foot or vehicle loads.

Aggregate size also affects the depth of the finished layer. For example, 10mm gravel is often laid at around 30–40mm depth, while 20mm aggregate may be laid at roughly 40–50mm depending on the situation.

Question 3

3. Do decorative aggregates help with drainage?

Accepted Answer

Yes. Most decorative aggregates allow water to pass between the stones. When installed correctly, this can improve drainage and reduce standing water on landscaping surfaces.

Question 4

4. How are decorative aggregates supplied in the UK?

Accepted Answer

Suppliers commonly sell decorative aggregates in either bulk bags or smaller 25kg bags (also called ‘large’ or major’ bags). They can also be ordered by the tonne in loose loads for larger jobs.

Decorative aggregates

20mm Limestone Chippings Bulk Bag

20mm Plum Slate Bulk Bag

40mm Plum Slate Bulk Bag

10mm Limestone Chippings Bulk Bag

Tarmac 10mm Gravel Large Bag

20mm Gravel Large Bag

20mm Limestone Chippings Large Bag

Tarmac 10mm Limestone Chippings Large Bag

20mm Polar White Chippings Bulk Bag

20mm Blue Slate Bulk Bag

Cumbrian Red Decorative Aggregate Bulk Bag

10-20mm Cotswold Chippings 20kg Bag

40mm Plum Slate Large Bag