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Peeling from masonry and brick

The cause of peeling of paint from concrete surfaces is most likely efflorescence.
Peeling from masonry and brick
Peeling from masonry and brick

Peeling from masonry and brick

(Detachment of a dried paint film in pieces, usually caused by moisture or grease under the painted surface). The cause of peeling of paint from concrete surfaces is most likely efflorescence. Soluble salts are contained in these materials. They will be carried to the surface when dissolved by water and remain there after the water evaporates. These salts (crystallized form) will push the paint away from the surface.

Possible causes

  • Efflorescence.
  • Applying paint on surfaces with high alkalinity content (recently plaster walls).
  • Presence of grease, oil, wax and dirt when masonry is being painted.

Solution

  • If efflorescence is present it must be removed. Remove all flaking and damaged paint by high pressure water washing. Fill all cracks; apply primer if surface is very porous before final coat. To prevent reoccurrence of efflorescence the walls should be sealed. Waterproof coatings will help to seal external walls.
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© YEAR AVF Paints Antilliaanse Verffabriek B.V. All Rights Reserved.
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