Description
Ultra-Rapid, High-Strength Post Fixing Mix with Added Aggregate
Heidelburg Fastset Postfix with Aggregate – 5 Minutes is an ultra-fast-setting concrete designed for situations where maximum speed and strength are essential. Enhanced with pre-graded aggregate, this mix delivers superior stability and a stronger set compared to standard rapid post mixes—making it ideal for heavy-duty posts, structural supports and time-critical installations.
Perfect for fencing contractors, landscapers, builders and DIY users who want professional-grade results in record time.
Key Features
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Super-Fast 5-Minute Set Time
Begins to harden in as little as 5 minutes, allowing faster installation and reduced jobsite downtime. -
Aggregate-Enhanced Formula
Added stone aggregate improves compressive strength, stability and long-term durability. -
No Mixing Required
Simply pour the dry mix into the hole, position the post and add water—no mixers, trays or tools needed. -
Heavy-Duty Holding Strength
Suitable for structural and load-bearing applications such as gate posts, bollards and heavy fencing. -
Consistent Factory-Blended Quality
Ensures predictable performance and uniform setting. -
Suitable for All Weather Installation
Performs reliably once cured, even in damp or variable outdoor conditions.
Ideal For
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Timber, metal & concrete fence posts
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Gate posts & heavy entranceways
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Signage posts & bollards
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Deck supports & pergola uprights
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Rotary lines, flagpoles & garden structures
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Fast-turnaround fencing and landscaping jobs
Benefits
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Completes post installations significantly faster
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Added aggregate increases durability and load support
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Easy pour-and-set application
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Reduces labour time and increases job throughput
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Strong, stable foundation for long-lasting installations
