Approx 25kg of ballast in each bag 
 Our ballast is used to create a solid foundation for supporting your fence. This product is to be mixed with cement and water to ensure the concrete mix will set hard. Depending on the width and depth of the post hole the amount of ballast needed will vary. We suggest between 1-2 bags to every post. This product can be used to erect Timber Posts and Concrete Posts and is ideal for creating a shed base.