A two component paint composition that, after mixing, comprises the following components in aqueous solution: a) from the first component: i) an aqueous binder, which aqueous binder comprises an oligomeric or polymeric compound the oligomeric or polymeric compound being formed from at least one monomer of the general formula I: Si(OR.sup.1).sub.4 where each R.sup.1 is independently selected from hydrogen or any alkyl, alkenyl, alkynyl, aralkyl, aryl or --(C.dbd.(O)R.sup.4 group, and each R.sup.4 group is independently selected from hydrogen or any alkyl, alkenyl, alkynyl, aralkyl or aryl group, and at least one monomer having the general formula II: (R.sup.2).sub.4-mSi(OR.sup.3).sub.m where each R.sup.2 is independently selected from hydrogen or any alkyl, alkenyl, alkynyl, aralkyl or aryl group, and wherein at least one --R.sup.2 group comprises the group --R.sup.XR.sup.Z or --R.sup.XN(R.sup.W).sub.2 where R.sup.x is any C.sub.1 to C.sub.10 bivalent organic bridging group, Q is selected from an Oxygen or a Sulphur radical and R.sup.Z comprises an H, alkyl, alkenyl, alkynyl, aralkyl or aryl group, and each R.sup.W is independently selected and defined as for R.sup.Z above; where each R.sup.3 is independently selected from hydrogen or any alkyl, alkenyl, alkynyl, aralkyl, aryl or --(C.dbd.O)R.sup.5 group, where R.sup.5 is defined as for R.sup.4 above, and m=1 to 3; and, optionally at least one colloidal silica; b) from the second component i) at least one reactive filler material.