yAn improved method of preparing thick, multi-layer coatings of zirconia on glass is described and the results have been discussed. Basic sol-gel solutions which comprise zirconium propoxide. n-propanol, acetylacetone and a few drops of nitric acid were stable for several months. However, coating prepared on the base of these solutions has numerous defects such as crazing. cracking and pin-holing. It was found that the quality of thick films can be improved by adding polymeric additive PEG 200 to the sol-gel solution. The best ratio of zirconium propoxide to PEG 200 was established. Prepared films have been characterized by Thermal Analysis (TA), x-ray Diffraction (XRD) and Rutheford Backscattering Spectroscopy (RBS).