Bar Chairs (Steel / Plastic)
Bar Chairs – Get Your Steel Off the Deck and On Spec
Bar chairs aren’t optional — they’re what keep your reinforcement in the right position through the pour. Whether you’re working on a house slab, a footing cage, or a suspended deck, bar chairs make sure your steel stays off the ground and in the cover zone where it belongs.
At Blacktown Building Supplies, we keep a full range of plastic and steel bar chairs in stock, including multi-height, clip-on, and base-mounted options. From 25mm through to 150mm cover, we’ve got what you need to suit trench mesh, reo bar, and slab mesh installs — in the sizes and styles your crew expects.
How Construction Bar Chairs Improve Concrete Work
It doesn’t matter how well you tie the steel — if it’s sitting too low or sagging during the pour, the slab fails compliance. Bar chairs support your reinforcement during placement and concreting, maintaining the correct cover from the formwork or sub-base to protect against moisture, corrosion, and long-term structural damage.
Steel fixers and concreters rely on bar chairs to:
- Maintain AS3600-compliant cover
- Reduce movement of steel during concrete placement
- Keep trench mesh and reo cages off compacted soil
- Speed up setup and pass inspection without rework
Steel vs Plastic Bar Chairs – Which Do You Need?
- Plastic bar chairs are ideal for general use on slab-on-ground, driveways, and precast panels. Lightweight, stackable, and easy to clip on or set out. Multi-height options (like 50/65 or 75/90) allow for flexible installs across multiple mesh profiles.
- Steel bar chairs offer extra strength and are suited for higher load applications — such as suspended slabs, beams, piers, and tilt-up panels. They’re reliable under pressure and ideal for cages or mats needing precise hold under full load during pour.
Whether you’re after individual sizes or a mix of heights for complex work, we’ve got you covered with bar chairs ready to load.
Don’t Stop at the Chairs – Get the Full Pour Sorted
Make sure your reinforcement setup is complete with everything you need for a compliant and efficient slab pour:
- Reinforce cages and footings with Steel Reo Bar
- Set trench foundations with Trench Mesh
- Lay full slab mats with Reinforcing Mesh Sheets
- Secure joins with Tie Wire
- Seal edges and control joints with Concrete Sealants
- Cut, bend, and fix with jobsite-ready Concreting Tools
Concrete Accessories from Blacktown Building Supplies
We know concrete waits for no one. That’s why we keep bar chairs, mesh, reo, and accessories in stock and ready to go. Whether you’re doing a driveway or tying off a suspended slab cage, we’ve got the sizes, load specs, and stock volumes to match.
Explore our full range of Concrete Mesh & Accessories online or drop into our Blacktown store for fast pickup, trade service, and no-fuss delivery across Sydney. 📞 Call 1300 554 775 or request a free quote online.