Sika Post Fix Mix - Fast Setting

Sika Post Fix mix is a fast-setting, two-component expanding foam designed to securely set fence posts, mailbox posts, deck supports, and signage without the need for traditional concrete mixing. Engineered for speed and convenience, Sika Post Fix mix simplifies post installation while delivering strong, reliable support in a variety of soil conditions.

This lightweight alternative to concrete expands to fill the hole around the post, creating a firm, stable hold within minutes. Sika Post Fix mix requires no water, no heavy lifting, and no extensive cleanup, making it ideal for contractors and DIY installers looking to reduce labor time on the job site. Simply pour the combined components into the post hole and allow the expanding foam to cure.

Designed for exterior applications, the cured foam resists moisture and ground movement while maintaining structural stability. It works well for wood, steel, and vinyl posts used in fencing, gates, mailboxes, and small structural projects. Because it sets quickly, projects can move forward faster compared to traditional concrete methods.

For efficient, clean, and dependable post installation, Sika Post Fix mix offers a practical solution that saves time while providing long-lasting support in residential and light commercial applications.