Silicone Resin Emulsion Paints and Finishes: Durable, Low-VOC Decorative Coating Systems
Façade coatings must fulfill various functions. In addition to protecting exterior construction materials against the effects of water, pollutants and chemical attack, the façade should also be aesthetically pleasing. Since most damaging effects require water, which can come from a variety of sources in addition to the exterior surface, well-protected façades should be low water absorbing and water vapor permeable.
A common problem for many façade coatings is their lack of water vapor permeability. When water enters the interface between the coating and the substrate coating, failures occur in the forms of blistering, cracking and peeling. By allowing water to escape these coatings, failures are avoided. In a well-protected façade, absorbed moisture must be allowed to escape into the atmosphere and the coating itself must last as long as possible.