Black Basalt 20mm 20kg Bag
20mm Black Basalt is a durable decorative gravel with a striking deep black finish, ideal for driveways, borders, paths and modern garden designs. Supplied in convenient 20kg bags, this hard-wearing stone darkens further when wet for a premium contemporary look.
20mm Black Basalt is a striking decorative stone known for its deep charcoal to jet-black appearance, making it a popular choice for modern and contemporary outdoor spaces. Supplied in convenient 20kg bags, this hard-wearing angular gravel is ideal for driveways, paths, borders, flower beds and feature areas.
Unlike mixed black decorative gravels, Black Basalt offers a much darker and more consistent finish, helping create a clean and premium look. When wet, the stone darkens further to an almost pure black colour, making it especially eye-catching after rain or when paired with water features.
Our 20mm Black Basalt is suitable for:
- Driveways
- Garden borders
- Paths and walkways
- Decorative landscaping
- Gravel grids
- Modern garden designs
Key Features:
- Deep black decorative stone
- Durable and hard-wearing
- Suitable for driveways
- Looks even darker when wet
- Low maintenance
- Supplied in easy-to-handle 20kg bags
Coverage Guide:
Each 20kg bag typically covers approximately 0.25m² at a depth of 50mm.
If you are unsure how much you need, feel free to contact us and we will happily help work out quantities for your project.
20kg
View a sample before you buy to make sure it's the perfect choice for your project. Get in touch to arrange a viewing.
View a sample before you buy to make sure it's the perfect choice for your project. Get in touch to arrange a viewing.
We deliver Monday - Friday. Delivery for bulk bags is via a 18 tonne Hiab lorry which is 12 meters long 4 meters high and 3 meters wide. Delivery made off the side of the lorry only and up to 8 meters from kerbside. Any deliveries made off the main highway will be completed at customers own risk and liability.
We deliver Monday - Friday. Delivery for bulk bags is via a 18 tonne Hiab lorry which is 12 meters long 4 meters high and 3 meters wide. Delivery made off the side of the lorry only and up to 8 meters from kerbside. Any deliveries made off the main highway will be completed at customers own risk and liability.
Pre-orders close every Tuesday at 1pm. Orders placed before this cut-off are delivered within 2–3 working days (typically Thursday or Friday the same week).
Orders placed after the Tuesday 1pm cut-off will be scheduled for delivery the following week. Please allow up to 7 working days for delivery in these cases.
Pre-orders close every Tuesday at 1pm. Orders placed before this cut-off are delivered within 2–3 working days (typically Thursday or Friday the same week).
Orders placed after the Tuesday 1pm cut-off will be scheduled for delivery the following week. Please allow up to 7 working days for delivery in these cases.
Please inspect your order upon delivery. If anything arrives damaged or incorrect, refuse the delivery and contact us straight away — we'll arrange a replacement or refund promptly.Once goods have been accepted, we're unable to accept returns due to the nature of bulk materials. Please note that natural variations in colour, size, and texture are not considered faults.
01227 915167 jandjaggregates@gmail.com



