Bar chairs and spacers, also known as reo chairs, keep reinforcement at the correct height to achieve stronger, more reliable concrete. They stop steel from shifting during the pour and help maintain the correct cover.

Allcon offers a complete range of concrete supplies to support any job — from small slabs to large-scale civil projects.

Explore our full selection of bar chairs and spacers, including tall combination chairs for double-layer mesh, concrete spacers for heavy-duty applications and shims for fine levelling — all backed by expert advice and same-day dispatch Australia-wide.

Seal concrete joints with our high-quality caulking products, protecting surfaces from moisture, dust, and debris while ensuring long-lasting durability.

Get precise and efficient concrete shaping with our formwork solutions, providing the tools and accessories you need for smooth and accurate pours.

Modern jointing strategies combine engineering principles with practical construction techniques to address different types of movement—shrinkage, thermal expansion, and structural loading.

By selecting the appropriate joint types, spacing, and reinforcement methods, engineers can ensure that concrete behaves predictably, minimizing random cracking and preserving surface quality.

Whether used in pavements, industrial floors, or structural slabs, jointing systems form a critical part of concrete design, linking material performance with real‑world durability.

Void former, builders film, rebate foam and underslab insulation.