Lack of adherence on synthetic surfaces

 

Lack of adherence on synthetic surfaces

Causes

  1. Smooth and non-porous surface.
  2. Contaminated surface.
  3. Painted under the sun.
  4. Excessive humidity.
  5. Temperature variation.
  6. Wrong product selection.
  7. Water infiltration under the paint film.
  8. Lower flexibility of paint film.
  9. Paint film altered by an additive: drying agent, oil…

Solutions

  1. Also for causes 2-9:
    Clean and sand affected areas, then apply a solvent base coat and two finishing coats.
    Correct the humidity problem if required.
  • Check the surfaces’ temperatures, which must match room temperatures. Optimal
  • temperature for application is between 15 °C and 25 °C (60 °F and 77 °F).
  • Apply a 100 % acrylic, water-based paint on vinyl wall coverings (maximum adhesion is reached after several weeks).
  • Check waterproofness of the sealant before painting.
  • Use Polyprep 145-033 on ceramics, glass and plastics.