Continuous Rebar Wire Hystool Chairs - 2m

1. What is the main benefit of a continuous wire chair over standard individual spacer blocks?

Individual blocks or single wire chairs require meticulous layout spacing and tedious wire-tying to prevent them from tipping over when stepped on. A continuous 2m chair provides a solid linear rail that cannot tip sideways, offering far superior stability and speeding up your steel-fixing workflow by up to 70%.

2. Can these wire chairs be used directly on top of a plastic damp-proof membrane (DPM)?

Yes. Because the weight of the steel mesh is distributed evenly along the entire 2-metre wave profile rather than concentrating on single sharp points, the risk of tearing a plastic DPM is highly minimized. For extra protection on soft insulation or delicate membranes, we recommend using our dedicated plastic spacer tracking profiles underneath the feet.

3. Will the steel wire chairs rust and show through the surface of the finished concrete?

No. These chairs are specifically sized to sit inside the slab matrix. As long as you have selected the correct chair height that allows for the specified concrete cover above the top mesh (typically a minimum of 40mm to 50mm from the finished slab surface), the wire framework remains entirely encapsulated and protected from moisture.

4. Are these wire chairs strong enough to be walked on by concrete installation crews?

Absolutely. They are engineered from high-tensile drawn wire precisely for this purpose. When spaced correctly at 1-metre intervals, they comfortably support the weight of operatives walking across the reinforcement grid to manage the concrete pump hoses.

5. How do I choose the correct height of wire chair for my slab?

To find the perfect chair height, take the total depth of your overall concrete slab, subtract the required top concrete cover, subtract the required bottom concrete cover, and subtract the combined thickness of your top and bottom mesh sheets. The remaining middle gap is your ideal chair height.