
Screed is a mixture of sand and cement that is laid over a concrete base to provide a surface, close to the specified level. It requires a high standard of flatness suitable to receive a flooring material, such as carpet, plastic sheeting or tiles and never left exposed to act as a wearing surface.
Some screeds contain mesh solely to control plastic shrinkage cracking. Also the function of steel mesh is to slow down the propagation of the shrinkage cracks from the screed surface and to hold together any cracks that appear. This only applies if the mesh has been placed correctly in the screed, i.e. in the top section. Crack control steel mesh only works when the screed has actually cracked.