Double Bull Cement Pc

2) - lay edgings/kerbs place the edging or kerb on top of the concrete bedding, and tap down to the required level using a small rubber mallet, or use a lump hammer to tap a piece of timber held on top of the edging, so that there's less danger of spalling the surface.The string line guide should be followed as closely as possibly, and the seated edging/kerb should never be more than 3mm above.