20mm Ballast Bulk Bags
20mm Ballast – Bulk Bag Delivery Nationwide
20mm ballast bulk bags are a practical all-in-one aggregate and sand mix for concrete, footings, shed bases, paths, slabs and general building work. Our 20mm ballast bulk bags are supplied for delivery only, making it easy to get building materials sent direct to site without wasting time on collections. Order 20mm ballast bulk bags from UK Building Supplies for reliable supply, clear pricing and straightforward nationwide delivery.
What Is 20mm Ballast?
20mm ballast is a pre-blended mixture of:
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Washed sharp sand
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20mm gravel aggregate
This combination makes it suitable for mixing concrete when combined with cement and water. The gravel adds strength, while the sand fills voids to improve compaction and stability.
What Is 20mm Ballast Used For?
20mm ballast bulk bags are commonly used for:
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Concrete footings
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Fence post installation
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Shed and garage bases
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Pathway and patio foundations
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General building and landscaping projects
It is one of the most widely used materials in domestic and light commercial construction. For sub-base preparation before concreting, see our MOT Type 1 bulk bags.
Coverage Guide – Bulk Bag
Each 20mm ballast bulk bag weighs approximately 850kg.
Coverage will vary depending on the mix ratio and application, but as a guide:
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One bulk bag will typically produce around 0.5 cubic metres of concrete when mixed with cement.
Always adjust quantities based on your project requirements.
Why Choose Our 20mm Ballast Bulk Bags?
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Consistent, quality-assured mix
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Suitable for strong concrete applications
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Convenient bulk bag supply
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Ideal for trade and domestic projects
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Reliable UK-wide delivery
Our ballast is sourced from trusted suppliers to ensure dependable performance on site.
Delivery Information
Delivery for these products is typically between 1 and 5 working days approximately, depending on product type, location, and supplier availability.
Some orders may arrive sooner, however others can take slightly longer due to routing, stock positioning, and haulage scheduling across our supplier network.
Deliveries are made either via small van or, in cases where bulk quantities are purchased, by a HIAB lorry with crane offload.
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Bulk bags weigh approximately 850kg
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Suitable access required for large vehicle delivery
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Delivery only – no collections
Please ensure adequate access before ordering.
Buy with confidence — all our products are brand new and sourced direct from trusted suppliers, with items shown as in stock to allow customers to place orders as and when needed. We do not display live stock quantities so availability may vary, however delivery times shown at checkout reflect current supplier lead times as accurately as possible.