Product code: CR30; CR40; CR50
Contact Konsa for pricing and availability. Specifications are confirmed during enquiry.
Concrete chair spacers — also called concrete cover blocks — provide stable support for reinforcement while maintaining the required concrete cover. Manufactured from 32 MPa concrete and supplied with blackened wire ties, the spacers are water-cured for 15 days and dry-cured for a further six days to develop their intended strength. Available cover sizes include CR30, CR40 and CR50 as listed in the product specification table.
Related products: Rebar Chair Spacer / Cover Block, Heavy-Duty Plastic Chair Spacer, Screed Chairs, and the Rebar and Reinforcing Spacers category.
Not sure which concrete chair cover height suits your pour? Product code CR50 provides a 50 mm concrete cover on this page. For the standard rebar chair spacer range including R50 (50 mm cover), see the linked rebar chair spacers product.
| Product Code | Concrete Coverage (mm) | Diameter (mm) |
|---|---|---|
| CR30 | 30 | 30 |
| CR40 | 40 | 45 |
| CR50 | 50 | 45 |
Sizes and codes extracted from the legacy product table.
Code: R15
Konsa rebar chair spacers support horizontal reinforcement in suspended slabs, beams and floor slabs while maintaining the specified concrete cover. Cover options from 15 mm to 150 mm including R50 (50 mm); confirm the required size against your project specification.
Code: H25
Heavy-duty plastic chair spacers support horizontal reinforcement in slabs and precast concrete applications. Their small contact area helps minimise the visible footprint against the formwork, while the concave seat accommodates rebar from 6 mm to 50 mm. Cover heights range from 25 mm to 80 mm, including H50 (50 mm). Spacers can be supplied with galvanised binding-wire ties by adding “W” to the product code, and custom sizes are available subject to manufacturing requirements.
Code: WS36
Rebar wheel spacers — also called circular spacers — are plastic clip-on supports that maintain consistent concrete cover around vertical reinforcement. The circular design provides support through 360 degrees, making these spacers suitable for columns, walls and beams. Multiple models are available for different rebar diameters and cover requirements; select the correct product code from the specification table for the reinforcement used on the project.
Code: C20
Heavy-duty combination chair spacers provide several cover heights from a single spacer, simplifying stock selection across slabs, walls, columns and precast concrete work. The compact formwork contact area and support for rebar from 6 mm to 40 mm make them a practical alternative to fibre-cement spacers. They can be supplied with or without galvanised binding-wire ties for faster placement and secure positioning.