GYPSUM PLASTER FOR MACHINE APPLICATION REDBAG KEEPER is a mixture made on the basis of gypsum binder, polymer additives and light perlite filler. It is intended for plastering manually or mechanically (using mortar mixing deposits) of strong concrete, brick, cement-sand, cement-lime and other mineral bases that are not subject to deformation for subsequent finishing (painting, wallpapering, etc.). It is used inside buildings, namely in rooms with a normal level of air humidity, including kitchens and bathrooms.

Maximum filler fraction size: 1.25 mm.

The substrate must be dry, not frozen, strong, capable of bearing loads, free from dust, dirt, oils, greases, lubricants, remnants of old paint, wax and other substances that reduce adhesion, have uniform water absorption, and meet the requirements of DSTU-N B A.3.1-23:2013, DSTU-N B V.2.6-212:2016. Remove weak areas of the base.

Ceramic brick walls and walls that are already finished with cement plasters have high moisture absorption, so after cleaning before plastering they must be treated with a deep penetration primer REDBAG ADHESIS.

Cast concrete walls have a smooth surface and low moisture absorption, so after cleaning before plastering they must be treated with an adhesive primer for dense, smooth, low or no moisture absorbing bases - REDBAG SUPERSTICK. Walls made of silicate brick, which are smooth, must also be treated with REDBAG SUPERSTICK adhesive primer before plastering.

Walls made of aerated concrete blocks must be cleaned of dust and treated with a vapor-permeable primer for hygroscopic surfaces REDBAG POROBAR or REDBAG INTERLACE.

For manual application, pour the dry REDBAG KEEPER mixture into a container with clean water (at the rate of 18.6-19.8 l of water per 30 kg or 620-660 ml per 1 kg of dry mixture), mix using a construction mixer until a homogeneous mass without lumps is formed.

For mechanized application, it is necessary to prepare the plastering station for work. Set the flow rate of the plastering station's water dispenser at 650-700 l/h. Deliver the mortar mixture to the work site using the plastering station.

Do not add other materials to the prepared mortar.

Work should be carried out at a base temperature of +10 °C to +30 °C.

Layer thickness from 5 to 30 mm per application.

Manual application. The mortar mixture is applied to the prepared surface using a ladle, spatula and leveled using a rule or a half-trowel. Approximately 60-100 minutes after mixing the mixture, level the layer of applied material with a metal trapezoidal rail, cutting off irregularities and filling in depressions. If the surface is being prepared for painting, then after leveling, wait for approximately 15 minutes and moisten the plaster surface with water and rub in circular motions with a sponge trowel to eliminate minor irregularities. After a short exposure until a matte surface appears, smooth the plaster with a wide spatula or metal trowel. To obtain a smooth surface, it is permissible at the end of the mortar hardening process (approximately 4-5 hours after mixing the mixture), to moisten the plaster surface abundantly with water and smooth it with a spatula or trowel.

Application by machine. With the mechanized method of work, any plastering station can be used to apply plaster. Plastering walls with a nozzle is usually carried out from left to right and from top to bottom, holding the spray gun perpendicular to the surface at a distance of 10-30 cm and forming strokes about 100 cm wide. The thickness of the plaster layer is regulated by the speed of movement of the gun. The work is carried out in such a way that the trace of the plaster spray moves along the lower edge of the strip of already applied mortar, the “caterpillar” method. Each subsequent stroke is applied with an overlap of the previous one by 2-3 cm. Approximately 60-100 minutes after mixing the mixture, level the layer of applied material with a metal trapezoidal rail, cutting off irregularities and filling in depressions. If the surface is being prepared for painting, after leveling, wait for approximately 15 minutes and moisten the plaster surface with water and rub in circular motions with a sponge trowel to eliminate minor irregularities. After a short exposure until a matte surface appears, smooth the plaster with a wide spatula or metal trowel. To obtain a smooth surface, it is permissible to moisten the plaster surface abundantly with water at the end of the hardening process of the solution (approximately 4-5 hours after mixing the mixture), and smooth it with a spatula or trowel.

The thickness of one layer of plaster should be from 5 to 30 mm. Surfaces with differences in the plane of more than 30 mm should be leveled in several layers, while the next layer should be applied immediately after the previous one has hardened (approximately 6 hours after mixing the mixture, depending on the water absorption of the surface and the temperature in the room). When applying several layers, do not level the previous layer.

During breaks in work for more than 20 minutes and after finishing work, the tool must be cleaned and rinsed with water.

At low temperatures, direct heating of the plaster surface should not be allowed. To speed up the drying of the plaster, ensure sufficient ventilation of the room.

0.9 kg per 1 m² with a layer thickness of 1 mm. The mixture consumption depends on the unevenness of the base and the skills of the performer.