Peeling from masonry

 

Peeling from masonry

Causes

  1. Efflorescence.
  2. Excessive humidity.
  3. Hardening sealant – floor.
  4. Very smooth surface – floor.
  5. Contaminants.
  6. Wrong product selection – garage floor.
  7. Application in the sun, causing solvents to evaporate too quickly.
  8. Accumulation of paint layers.
  9. Water infiltration under the paint film.
  10. Old plaster, very dry and powdery.

Solutions

  1. Clean surface, remove lifted coating, clean again and apply appropriate coating.Correct humidity problems if required.
  2. Clean surface, remove lifted coating, clean again and apply appropriate coating.
  3. Remove hardening sealant or build a raised floor.
  4. Clean surface, remove lifted coating, clean again and apply appropriate coating.
  5. Clean surface, remove lifted coating, clean again and apply appropriate coating.
  6. Clean surface, remove lifted coating, clean again and apply appropriate coating.
  7. Clean surface, remove lifted coating, clean again and apply appropriate coating.
  8. Clean surface, remove lifted coating, clean again and apply appropriate coating.
  9. Clean surface, remove lifted coating, clean again and apply appropriate coating.
  10. Remove lifted coating, clean surface, apply a solvent-based primer, makenecessary repairs, then apply the solvent-based primer again and the appropriate finishing coats.
  • Wait 28 days before painting fresh concrete.
  • Use muriatic acid to eliminate efflorescent salts and engrave smooth concrete floors.
  • Preferably use a water-based product on masonry, except on old powdery plaster.
  • Run a humidity test before covering a concrete floor.
  • Check surface temperature. It must match room temperature.
  • Avoid painting if surface humidity content exceeds 6 %.