A PVC Cover Block is a type of construction material used to support reinforcing bars or steel bars in reinforced concrete structures such as beams, slabs, columns, and walls. The cover block is placed between the reinforcing bars and the formwork or shuttering before the concrete is poured. PVC Cover Block is used to maintain the correct distance between the reinforcing bars and the surface of the concrete, ensuring that the reinforcing bars are fully embedded in the concrete and are not exposed to the elements.