The ornamental design for a thin renovationceilingtilecover for a blemished existing reveal ceilingtile, as shown and described.
FIG. 1 is an upward perspective view showing my new design for a thin renovation ceiling tile cover for a blemished existing reveal ceiling tile;
FIG. 2 is a bottom plan view;
FIG. 3 is a top plan view;
FIG. 4 is a side elevational view which is a mirror image of all sides; and,
FIG. 5 is a broken away cross sectional view.
The broken line drawings of the prior blemished existing reveal ceiling tile and support grid are for illustrative purposes only and form no part of the claimed design.