H.B. Fuller Fast 2K Post Anchor Mix – Expanding Composite Footing for Fence Posts

H.B. Fuller Fast 2K Post Anchor Mix is an expanding composite footing designed for fence posts and other supported structures. This lightweight formulation aims to simplify installations by replacing heavy concrete with a compact 2.5 pound bag, giving you a secure footing without the bulk. It pairs practical on-site handling with durable performance, making it a versatile option for both DIY projects and professional jobs alike.

Versatile, quick to use

Designed for ease of use, the product requires no water or additives. It performs across a broad temperature range from -5 F to 105 F, which helps you work in varied climates. Mixing takes about 30 seconds, setting occurs in roughly 5 minutes, and most posts can be built on within 30 minutes. These timings support faster workflows while still yielding solid footing results.

Key benefits at a glance

• Lightweight formula replaces heavy concrete with a 2.5 lb bag
• Operates across -5 F to 105 F for varied climates
• Mixes in about 30 seconds; sets in around 5 minutes; post ready in 30 minutes
• No water or additives required

Versatility and material compatibility

• Expanding composite technology adapts to wood, metal, and vinyl posts
• Suitable for decks, fences, mailboxes, pole barns, and more
• Hydrophobic barrier helps resist rot and corrosion
• Pro Technology supports building code requirements for special foundations

Durability and protection

A hydrophobic barrier forms at the post interface, helping resist rot and corrosion. This protective aspect can contribute to longer-lasting installations and lower maintenance needs over time.

Code-ready performance

Pro Technology is designed to meet building code requirements for special foundations and load-bearing elements, offering a level of compliance for projects with structural considerations.

On the job, you may notice a cleaner workflow, faster lead times, and the ability to anchor posts with less physical strain. While results vary with conditions, this formula is designed to support practical, dependable footing options across common projects.