20mm Ballast Bulk Bags
20mm Ballast Bulk Bags
20mm Ballast – Bulk Bag Delivery Nationwide
Our 20mm Ballast Bulk Bags are a ready-mixed blend of sharp sand and 20mm gravel, making them ideal for concrete production and general building work. Supplied in convenient bulk bags, this high-quality ballast provides a strong and reliable base for a wide range of construction projects.
If you’re looking for dependable 20mm ballast in bulk bags for footings, fence posts or slab bases, this product offers consistent grading and excellent workability.
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 is typically within 2–5 working days via 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.