The 20mm Ballast Large Bag is an essential for all your construction and outdoor projects. This high-quality mixture of sand and gravel is perfect for general building tasks like concreting, screed flooring, and bricklaying. The large bag ensures you have enough material to cover a substantial area, reducing the need for frequent reorders. With its 20mm aggregate size, this ballast provides excellent compaction properties for a sturdy and secure finish. Created from durable materials, it is built to withstand harsh weather conditions, ensuring the longevity of your projects.