Sika 33 oz. PostFix Fence Post Mix

Sika PostFix is a two-part, pre-proportioned polyurethane resin backfill mix designed for fast and easy post setting. Formulated to produce high-strength expanding foam, it provides solid in-ground support for wooden, PVC, and steel posts without the need for traditional heavy concrete. This mix-in-the-bag formula sets rapidly and seals the base of the post against ground moisture. It requires no water or special mixing tools, making it a convenient solution for fence posts, mailboxes, signs, and gate installations.