Modern construction is an arena for the application of many technological and technical innovations. Even in areas such as wall plastering , new products are constantly appearing that increase labor productivity and improve the quality of processing. One of these novelties is the Betonokotntakt Knauf primer, which is a polymer dispersion with the addition of alkali-resistant sand. It is intended for processing surfaces with low absorbency, which can be a problem when plastering walls: over time, the coating peels off.
Primer “Concrete Contact Knauf” is recommended for the processing of cast concrete,
reinforced concrete slabs , prefabricated reinforced concrete, drywall, under gypsum and lime-gypsum plaster, before installing stucco decoration, for processing polystyrene plates before plastering them, etc. coated with this primer, have excellent adhesion, become denser and more durable. This type of material is also used when gluing ceramic tiles to tiles, for treating surfaces coated with oil paint before plastering, before puttying metal parts, etc.
Surface preparation and priming
Before using the “Concrete Contact Knauf” mixture, it is necessary to prepare the surface: clean from dust, dirt and grease stains. Sell this material in buckets of 5 and 20 kg. Depending on the type of surface to be treated, water may or may not be added to the primer (not more than 1 liter per 20 kg). Before applying, the composition must be thoroughly mixed and work can begin.
Primer "Concrete Contact Knauf" (consumption - 250-350 g / m 2 ) very economical. It is applied with a brush or roller. Do not apply the primer to cold surfaces or work with it at temperatures below +5 ° C. The temperature should also not fall below this mark until the layer completely dries. During operation, the composition must be periodically mixed.
Putty can only be applied to a completely dried primer, but the gap between drying and the start of puttying should be very small to prevent dust from settling on the treated surfaces. After work, all tools should be washed: the fresh composition is washed off with water, dried up - only with the help of mechanical cleaning.
ContraindicationsIt is not recommended to use this product on surfaces with insufficient density, crumbling and unstable bases. Do not apply at low temperatures (below +5 ) and on frozen surfaces.
Benefits
At a low price, the primer is of high quality, does not contain allergens and does not harm the environment, dries quickly, is convenient and easy to use. And all this is the Primer “Concrete Contact Knauf”. The technical characteristics and the reliability of the surfaces plastered with it are much higher; this finish lasts longer: it does not crumble and does not peel off, while retaining an attractive appearance for a long time.