The most frequently encountered method of achieving an even, smooth and cracking-resistant surface is the laying of a fine thin layer of a finishing mortar appropriate for the location of the application and the type and often with the colour of the finishing coat. The finishing mortars are used for the formation of walls and ceilings with ideal geometry, for the elimination of small defects on the base and provide uniform absorption for the laying of the next coat. The execution of the finishing mortar is an exceptionally important task which should guarantee the complete development of the properties of the final coat and the aesthetic appearance of the finishing works, eliminating the negative effects from light shades resulting eventually from uneven or rough surface with different light reflection or from uneven absorption of the base