20mm Ballast

£55.00 exc VAT

Alsoils’ 0.75m³ bulk bag of 20mm Ballast brings a new level of strength and adaptability to your construction and landscaping projects. Its combination of sharp sand and 20mm gravel is ideal for creating high-quality concrete for various applications, including foundations and paving.

20mm Ballast is a robust and versatile aggregate, ideal for various construction and landscaping projects.


Out of stock

SKU: 80C Category:


Alsoils+ 20mm Ballast offers a blend of functionality and quality, perfect for a range of construction applications. This aggregate, a mix of sharp sand and 20mm gravel, is ideal for making strong, stable concrete for foundations, driveways, and as a base for paving.

With its superior quality and versatility, our 20mm Ballast bulk bag is the perfect choice for anyone looking to transform their existing space. All of our bulk bags are filled to the brim, so you can be sure that you get the best value for money and a good quality aggregate.

Suitable for: Construction and landscaping projects

Bag size: 0.75m³

Available in: Portsmouth, Southampton, Winchester, Chichester, Waterlooville and other towns and villages within Hampshire and West Sussex

20mm Ballast FAQs

What is 20mm ballast used for?

20mm ballast is a versatile aggregate used primarily for mixing concrete for foundations, paths, and driveways. Its mix of coarse and fine stone provides strength, making it ideal for structural bases and general construction work.

What is the difference between 20mm ballast and other types of aggregate?

20mm ballast is a specifically graded aggregate designed for concrete mixing and foundation work, offering a balance for optimal strength. Other aggregates like our 10mm stone may be finer or coarser, intended for different applications like drainage or decoration.

Is it suitable for use under slabs?

Absolutely, 20mm ballast is a great choice for a sub-base under concrete slabs, providing the necessary stability and support. Its composition ensures a solid foundation, reducing the risk of cracking and settlement.

Delivery Information

Our 20mm Ballast bulk bag deliveries are typically made via a vehicle with a crane offload.

Deliveries will be between 2/5 working days from ordering – unfortunately we are unable to specify a specific time although if you call us, we can usually let you know what day and a rough time to expect your delivery, however due to the nature of our business this cannot be guaranteed and can change at short notice.

Being a local, family-run business we only have the capabilities to deliver topsoil, manure, mulch and other products to areas near our HQ in Hambledon, Hampshire (see our delivery zones page for more information). Please note, we are currently unable to deliver bulk bags of 20mm Ballast within the Portsmouth Clean Air Zone.


Based on 14 reviews
Mark Belshaw
Mark Belshaw
Ordered 2 bulk bags of manure on Wednesday, late afternoon and all was delivered by Friday lunch time. Great quality product and excellent delivery turnaround.
Charles Smith
Charles Smith
Excellent, from order to delivery. 10 tonnes of loose load top soil delivered within a few days. Best price and the 10mm screened soil is great quality. Thank you
Lesley Barry
Lesley Barry
Excellent product ordered 4 bags of top soil the driver was so accommodating as we have a very long driveway. The customer sevice was excellent. Thank you.
David Robberts
David Robberts
Excellent product at a sensible price from a local supplier. Staff are friendly and willing to help: I asked if just one bag of topsoil could be delivered quickly and it arrived next day! Great service.
Mark Hibberd
Mark Hibberd
Smooth execution of the transaction and delivery. Very helpful phone call and conversation. Ordered three bags of Border Blend topsoil. Paid by Paypal. They delivered, on the specified date, carefully, exactly where I wanted the bags placed. All in all, a very pleasing purchase. The topsoil was excellent and had been very carefully prepared. No lumps. Would definitely recommend and I will use again. Everyone I spoke to was nice and helpful.
David Stamp
David Stamp
Ordered topsoil on Tuesday came by Friday at the exact time quoted. Was WAY cheaper than anywhere else (by about £15 per bag) and was dropped off via a crane on back of the lorry, not by pallet which most of the other places use. Soil was fine and dry. Brilliant !