In them, the binder is potassium water glass, which hardens under the influence of carbon dioxide in the air. They are delivered in the form of a thick paste-like solution ready for application. They are used for obtaining a dragged or scratched surface structure, for external and internal application. This type of plaster dries without forming a surface film, is resistant to weathering, has relatively good water-repellent properties, good permeability to water vapor and carbon dioxide, reduces the possibility of retention of contaminants on the surface, is non-flammable and easy to apply.
They are produced with grain size: 1.5, 2, 2.5 and 3 mm. Silicate plasters can be applied on reinforced putty layers in thermal insulation systems, lime, lime-cement and cement plasters, concrete and other mineral bases or on old strong coatings of silicate paints. To a much lesser extent they are suitable for application on gypsum plasters, in which case it is mandatory to make a test beforehand. These plasters are not suitable for application on gypsum boards, synthetic materials and resins, varnish or oil coatings, lean, dispersed and lime paints.