Bernardelli Group MAK5

MAK5 is a pre-mixed dry mortar composed of hydrated lime, Portland cement, selected sands, fibres and additives that improve workability, adhesion and flexural strength.‎ The product complies with UNI EN 998-1 and is classified as GP CS II - W0.‎ MAK5 is used as a base plaster for plastering masonry made of bricks, concrete blocks and mixed masonry.‎ The presence of fibres improves the mechanical characteristics of the product, in particular the flexural strength, and reduces the probability of cracks appearing.‎ PREPARATION OF THE SUBSTRATE The substrate must be free of dust, efflorescence, release agents, greasy or oily substances.‎ The surface of the substrate must be homogeneous, rough and free of loose parts.‎ Any cavities must be filled with the same material at least 24 hours before plastering.‎ Masonry with a particularly smooth surface must be treated in advance with suitable primer.‎ In hot, dry climates, the substrate must be dampened before plastering and the mortar, once applied, must be protected from rapid drying.‎ PREPARATION OF THE PRODUCT Load the hopper of the plastering machine with a sufficient amount of material, start the machine by adjusting the water flow until a consistency suitable for applying the plaster is obtained, normally this is achieved using approx.‎ 23% water, equal to 5.‎8 litres per bag.‎ Adjust the air at the lance to achieve an even spray pattern.‎ Apply the plaster in thicknesses between 10 mm and 20 mm per coat.‎ Once the plaster has been applied, level it with a straight edge.‎ After 2 to 4 hours, depending on weather conditions and the type of substrate, the surface can be float-finished and then roughened.‎ For thicknesses of more than 20 mm, the plaster must be applied in successive layers at least 24 hours apart.‎ In such cases, it is advisable to apply a first layer of sprayed-on rendering at least 24-48 hours before the plaster body is applied.‎ MAK5 is only applied with a plastering machine (type: m-tec duo-mix, PFT G4, etc.‎).‎