What is 20mm Ballast?
20mm ballast is pre-mixed concrete aggregate combining sand with 20mm gravel. This all-in-one product simplifies concrete mixing for general construction. Loose tipped delivery provides convenient bulk supply eliminating need for separate aggregate storage.
What mix is in 20mm Ballast?
Contains optimum blend of sand (0-4mm) and 20mm gravel for concrete production. The 20mm maximum aggregate size suits most general concrete applications. Consistent blend ensures predictable concrete strength and workability.
Where to use 20mm Ballast?
Perfect for footings, foundations, and ground beams. Ideal for paths, bases, and general concrete work. Suitable for most domestic concrete applications. Convenient for small builders and DIY projects requiring consistent concrete.
Extra Information
Simplifies concrete production - just add cement and water. 20mm aggregate size provides good strength while remaining workable. Calculate 1.7 tonnes per cubic metre.
Key Specifications:
- Composition: 0-4mm Sharp sand + 0-20mm graded stone
- Mix Ratio: Optimally balanced for concrete strength
- Stone Type: Locally sourced flint or limestone
- Special Option: 0-10mm ballast for finer finishes (available on request)
Ideal Project Uses:
- Footings & Foundations - Perfect for small extensions and outbuildings
- Garden Paths - Create durable concrete walkways
- Shed Bases - Strong, level foundations for garden buildings
- Greenhouse Floors - Stable, long-lasting bases
- Fence Posts - Quick-setting concrete for secure installation
- Oversites - Small area concrete slabs
Special 0-10mm Fine Ballast Option
Please note: Fine ballast requires ordering in advance - please call to arrange.
For projects requiring a smoother finish, we offer specially mixed 0-10mm ballast. This finer grade is ideal for:
- Decorative concrete surfaces
- Thin concrete overlays
- Precision levelling work
- Indoor concrete floor
