EFFLORESCENCE is visible as soluble salts that form on the surface of plaster or brick work, usually visible as loose white powder or as feathery crystals.

POSSIBLE CAUSES:

  • Failure to adequately prepare the surface by removing all current traces of efflorescence
  • Insufficient curing time for new cement before painting
  • Contamination from seawater spray or exposure of unpainted masonry to the elements for long periods of time
  • Using a primer with low alkali resistance
  • Failure to attend to all the waterproofing aspects prior to painting

SOLUTION:

  • No remedy other than to prevent it from occurring by eliminating abnormal moisture levels in the masonry surface.
  • Remedy the cause of the excessive moisture in the masonry first.
  • Remove the efflorescence and all other loose material with a wire brush, a power brush, or low-pressure washing, and then thoroughly rinse the surface and allow it to dry out.
  • When all traces of efflorescence have been removed, prime the affected area with Prominent Damp Cure, allow it to dry for 24 hours and apply a suitable quality topcoat
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