Sika Post Fix for fence posts is a 2-component resin that, once mixed, produces a quick-setting expansive polyurethane foam (sets in 3 minutes). Lightweight and resistant. Ideal for fence posts, sign posts, or mailboxes. Easy to prepare: roll the bag, open and pour! Suited for all wood, PVC, and metal posts. Can be used in cold weather without the need to add additives. 979 ml bag*. Note: not suited for deck posts.
*The bag contents, once completely expanded, permits installing a 4 in. x 4 in. post in a 3 ft. hole with a diameter of 8 ft. A 979 ml bag replaces two bags of 30 kg cement mix.