Both these items have as their foremost purpose, the repelling of water from the surface it is applied to, for deflecting water away from the building wall or component. Coatings such as Dow-Cornings ALL GUARD, THOROCOAT Systems, PennKote, Sternson, Chemtrete and many others are well known to BDA Inc. as we are approved applicators by the manufacturers themselves for many of these coatings and repellents. Repellents are generally "clear" and thus are not seen when applied, except perhaps as a film or gloss. Part of the difference between BDA Inc. and others is the amount of prepatory work and other agents used, prior to the coating application. Our application of coatings are second to none in this Industry.