When masonry mortar is used, mix the product with water and sand in the specified quantity with electric concrete mixer, manually or with an electric mixer. The absorbent building blocks are wetted before use. Apply the mortar to the substrate and position the masonry blocks. As a plaster mortar apply on the wall in a minimum layer of 10 mm and draw on the straight. As a mortar mortar, apply on the substrate with a 1 - 2 mm thickness coat.