Build It Postcrete Post Mix Concrete 20kg

Build It Postcrete Post Mix Concrete 20kg is a high-performance rapid-setting concrete designed to make installing posts faster, easier and more reliable. Ideal for both professional contractors and DIY users, this factory-blended post fixing concrete eliminates the need for mixing, reducing labour time while delivering exceptional strength and durability.

Perfect for securing fence posts, gate posts, washing line poles, rotary dryers, sign posts, bird tables, play equipment and other outdoor structures, Build It Postcrete provides a solid foundation with minimal effort. Simply position the post, pour the Postcrete into the hole, add the recommended amount of water and allow it to set.

The quick-setting formulation achieves an initial set in approximately 5–10 minutes (depending on weather conditions), allowing projects to be completed far quicker than traditional concrete. Once cured, the concrete achieves a compressive strength exceeding 20N/mm² after 28 days, ensuring long-lasting performance in demanding outdoor environments.

Supplied in a durable waterproof plastic bag, Build It Postcrete is suitable for use in domestic, commercial and agricultural applications.

Features & Benefits

Rapid setting formula with initial set in just 5–10 minutes

Ready mixed concrete – simply add water

No mixing required, reducing installation time

High strength concrete achieving 20N/mm²+ after 28 days

Suitable for timber, concrete, steel and plastic posts

Waterproof bag helps protect the product during storage

Professional quality factory blended concrete

Ideal for both DIY and trade use

Suitable for all weather outdoor installations

Saves time compared to traditional concrete mixing

Applications

Build It Postcrete is suitable for fixing:

Fence posts

Concrete fence posts

Timber fence posts

Metal fence posts

Plastic posts

Gate posts

Garden fencing

Rotary washing lines

Washing line poles

Bird tables and bird feeders

Sign posts

Children's play equipment

Pergolas

Small landscaping structures

Agricultural fencing

Domestic and commercial post installations

Product Size

Weight: 20kg

Packaging: Waterproof plastic bag

Product Type: Rapid Setting Post Mix Concrete (Postcrete)

Approximate Coverage Guide

50mm (2") Round Posts

75mm (3") Square Posts

100mm (4") Square Posts

Weight 20kg

Colour Grey

Application Post fixing

Mixing Required No

Water Required Yes

Initial Set Time Approximately 5–10 minutes

Compressive Strength Greater than 20N/mm² after 28 days

Suitable For Timber, steel, concrete & plastic posts

Usage Internal & External (primarily external)

Storage Store in a cool, dry location

Packaging Waterproof plastic bag