SILRES BS 338 is used in undiluted form as an additive for aqueous indoor paints in order to improve the workability. In indoor paints, SILRES BS 338 positively influences the wetting and leveling properties which leads to a very even and smooth coating.Especially on surfaces with sidelight applications without visible overlap are possible. Because of hydrophobation of the first coat the open time of the second coat is extended. Furthermore the antiblocking properties of the paint are improved.