Postfix Concrete by Buildit is a pre-mixed blend consisting of cement, aggregates, sands, and specially formulated additives. This fast-setting concrete is designed to securely erect all types of posts and can be easily mixed with water (detailed instructions are printed on the bag). 
Within 5 to 10 minutes, Postfix Concrete will begin to set and will achieve a strength of more than 20N/mm2 after 28 days. However, it should not be used when the ground is frozen or when the ambient temperature is below 5 degrees Celsius. 
Packaged in water-resistant 20kg bags, Postfix Concrete should be stored unopened until use and always kept off the ground on a pallet. Choose Buildit's Postfix Concrete for a reliable and efficient solution for your post erecting needs.