Recently we have been investigating the mineralization of polymer-surfactant films to create thicker and more robust self-supporting membranes. Our previous experiments used the cationic surfactant-polyethylenimine system, and also mixtures of cationic and anionic surfactants with water soluble polymers. Recent in situ synchrotron SAXS experiments on the subphase of these film forming solutions highlighted a change in the mesophase structure formed in systems with identical molar ratios as the overall solution concentration was reduced. Following the success of our recent time-resolved experiment on INTER on our polyelectrolyte-surfactant templated silica and titania films at standard concentrations we would now like to explore this effect on mesostructure development as the overall concentration of the film forming solutions is reduced.