Coating systems are categorized according to their binders. A complete system comprises a suitable plaster, a primer and the paint. It is important to ensure that the physical properties of all the system components are tuned to each other and to the respective substrate. Only then can the system provide long-lasting and effective protection against facade damage specific to the building in question.

In order to profit fully from the useful properties of silicone resin emulsion paint, it must be protected from aggressive constituents in the construction material (alkalis, salts, etc.). A silicone primer is especially suitable as consolidation primer, impregnating primer or penetration primer. It penetrates deep into the mineral-based construction materials, consolidates friable substrates, reduces water absorption, acts as a water repellent, creates a dry area under the coating, reduces the migration of water and salts (hydrophobic zone) and is highly permeable to water vapor. Any moisture below the coating is able to dry out, and the substrate is able to attain its ultimate strength by undergoing carbonation. In addition, the primer optimizes adhesion of the silicone resin emulsion paint. High-performance silicone primers are easy to apply and are also available in solvent-free, water-thinnable and low-environmental-impact form, which makes them physiologically inert.

Plasters make an important contribution towards protecting the building fabric. The most commonly used plasters are mineral lime-cement plasters, silicate emulsion plasters, polymer plasters and silicone resin plasters.

As prevention against moisture and salt damage and for repair work, P1-category repair plaster has proved to combine well with silicone resin emulsion paints. It has the following useful properties:

• High water-vapor and CO²permeability and therefore good masonry drying.
• Prevention of damp patches and efflorescence
• High pore volume, permitting accommodation of salts as they hydrate or crystallize out of solution
• Good adhesion to all firm substrates
• Readily applicable using a brush, roller, trowel or pressure gun

A colored exterior coating is a stylistic tool used in architecture that simultaneously provides essential protection against the weather and other external influences. The choice of paint will depend on its compatibility with the substrate and the properties of the paint system.

On account of the various binders used, the physical and chemical properties of paints differ considerably. The more permeable the paint, the more breathable the exterior wall is. Because moisture trapped inside a wall can cause health problems and also damage the building fabric, we recommend the use of a paint that does not seal the exterior wall but allows it to breathe. At the same time, however, it must prevent ingress of water.