Ballast 20kg
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Product Details
Ballast 20kg is a pre-mixed blend of sharp sand and 20mm gravel supplied in a convenient bag, designed for easy handling in home improvement projects. This material is ideal for mixing with cement to create concrete, making it perfect for building shed bases, securing fence posts, laying driveways, path edgings, and forming strong sub-bases for paving. Its composition ensures a durable and stable foundation, suitable for both small landscaping jobs and general construction tasks around the home. The mix provides good drainage and strength, making it a reliable choice for most non-structural concrete applications. Often referred to by names like all-in ballast or concrete ballast, it is chosen when you need a ready-to-use aggregate for concrete mixing without the need to source sand and gravel separately.
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Frequently Asked Questions
How much area will one 20kg bag of ballast cover?
One 20kg bag of ballast will typically cover approximately 0.01 cubic metres when mixed with cement to create concrete. For a standard 100mm thick concrete base, this equates to roughly 0.1 square metres of coverage.
What ratio should I mix 20kg ballast with cement?
For general concrete applications, mix one 20kg bag of ballast with approximately 5kg of cement. This gives you a 4:1 ballast to cement ratio, which is suitable for most non-structural projects like shed bases and fence posts.
Is 20mm ballast suitable for laying driveways?
Yes, 20kg ballast with 20mm aggregate is excellent for driveway sub-bases and concrete mixing. The 20mm gravel size provides good compaction and drainage, while the sharp sand fills voids to create a stable foundation for driveways.
What's the difference between ballast and MOT Type 1?
Ballast is a ready-mixed blend of sand and graded stone for concrete making, while MOT Type 1 is crushed limestone specifically for road construction sub-bases. Ballast is better for concrete mixing, whereas MOT Type 1 is preferred for structural foundations.
Can I use 20kg ballast for fence post installation?
Absolutely, 20kg ballast is ideal for securing fence posts when mixed with cement and water. The mix provides excellent stability and drainage around the post, preventing waterlogging and ensuring a long-lasting installation.