Our research focused on the adhesion properties of mirror coating on silica float glass due to applying different quantity of tin-chloride sensitizing agent. Investigation was carried out to detect the distribution and quantity of tin containing clusters deposited on the glass surface working as crystallization centre. The adhesion properties of coatings were tested by scratch test where critical peeling forces were evaluated. The morphology of the formed scratch track was measured with scanning electron microscope. The surface topography was scanned by AFM technique.