Home Problems & Solutions Wrinkling appears on a surface painted with enamel or varnish. Wood CausesA second coat was applied before the first one fully dried.A very thick layer was applied.The application was done in high temperature or high humidity.An unsuitable solvent was used (for solvent-based paints). SolutionRemove any loose residue.Sand and clean the surface.Apply one coat of VELATOURA and two coats of WOOD PLUS.