• Shades with the F symbol were not used, or vibrant shades like bright red, blue, and yellow were used, which are less resistant to solar radiation.
  • Poor-quality paint was used, or the surface is alkaline from non-carbonated plaster.
  • Remove surface dust by scrubbing with a stiff brush, rinse thoroughly with water, and wait for it to dry.
  • Then, prime the surface.
  • Apply two coats of paint from the 4 SEASONS family.