Wooden Gates For Bucks, Berks, Herts & Oxon
Save hours of labour and secure your boundaries instantly with Buildit Postfix Concrete (20kg). Formulated specifically for fencing contractors and DIY landscapers, this trade-grade, rapid-setting concrete mix eliminates the need for messy wheelbarrows, mechanical mixers, or tedious hand-stirring. Simply position your timber, metal, or concrete post in the hole, fill it with water, and pour the dry mix directly from the bag. It begins to chemically harden in just 5 to 10 minutes, allowing you to erect a stable, storm-resistant fence line in a single afternoon.
Ultra-Fast 5 to 10 Minute Set: Rapid-hardening compounds anchor posts quickly, drastically reducing the time spent holding or propping support structures plumb.
Zero-Pre-Mixing Required: The intelligent dry formula is engineered to be poured straight into standing water, combining instantly within the post hole.
Universal Material Compatibility: Provides an unyielding, high-density structural concrete sleeve around pressure-treated wood, galvanized steel, or precast concrete posts.
Showerproof Plastic Packaging: Supplied in a tough, weather-resistant structural bag that keeps the inner contents perfectly dry, even when stored outside on-site.
Collection / Delivery allow 3-5 days
£4.75 + VAT
Standard building aggregates require manual mixing ratios, shovel work, and up to 24 to 48 hours of curing time before you can safely subject them to tension. Leaving a fresh fence run unsupported for that long risks having your posts knocked out of alignment by overnight wind loads or shifting soil. Buildit Postfix Concrete bypasses this waiting period entirely, providing an ultra-dense structural anchor that stabilizes your perimeter supports almost instantly.
Comprising a high-specification blend of premium Portland cement, targeted accelerator chemicals, and sharp grading sands, this formulation creates a highly durable, low-porosity concrete plug deep within the subsoil. It behaves as a rigid foundation jacket, evenly distributing the lateral load forces generated by high winds across the surrounding soil matrix to eliminate leaning or wobbling.
Maximum Efficiencies On-Site: Speeds up your workflow significantly—by the time you dig your next post hole, the previous post is already locked firmly in place.
Advanced Water-Activated Matrix: The blended particles absorb liquid evenly from the bottom up, preventing dry unmixed pockets or weak internal voids.
Subterranean Frost Protection: Dries into a tight, durable cell structure that resists cracking and crumbling during extreme winter freeze-and-thaw cycles.
Eco-Conscious Packaging: The highly durable plastic bag prevents puncture tearing, reduces product waste, and can be handled easily in wet weather conditions.
| Attribute | Specification |
| Brand | Buildit |
| Product Type | Rapid-Setting Ready-Mix Post Concrete |
| Bag Weight | 20kg |
| Initial Setting Time | 5 to 10 Minutes (Depending on ambient temperatures) |
| Full Structural Cure | 24 Hours |
| Material Base | Portland Cement, Graded Fencing Ballast, and Setting Accelerators |
| Coverage Estimate | Approximately 1 bag per standard 300mm x 300mm x 600mm hole |
| Compatibility | Pressure-Treated Timber, European Redwood, Concrete Post Profiles, Metal Spikes |
Quantity Guide Tip: For a standard 100mm x 100mm (4″ x 4″) fence post set into a standard 300mm x 600mm (24″) deep hole, you will require exactly 1 to 1.5 bags of Buildit Postfix. If you are installing heavy driveway gate posts or working in exceptionally soft, sandy soil conditions, increase the hole width and budget for 2 bags per post to provide a wider structural footprint.
| Weight | 20 kg |
|---|
You must be logged in to post a review.
Reviews
There are no reviews yet