Saponification
Alkyd and oil-based paints react and saponify with alkalis present in new masonry to form water-soluble soaps. The paint film turned into soap, becomes soft, sticky, and water-soluble.Possible Cause:Incorrect use of…
Poor Galvanized Metal Adhesion
Paint that has lost its adhesion to a galvanised metal substrate. Possible Cause: Improper surface preparation, such as inedquate rust removal. Failure to remove the oil coating in the metal…
Chalking
Formation of fine powder on the surface of the film during weathering, which can cause colour fading. Although some degree of chalking is a normal, desirable way for a paint…
Efflorescence / Mootling
Crusty white salt deposits, leached from martor or masonry as water passes through it. Possible Cause: Painting over insufficiently cured concrete. Excess moisture escaping through the exterior masonry wall from…
Paint Incompatibility
Loss of adhesion where many old coats of alkyd or oil base paint received a latex top coat. Possible Cause: Use of water base latex paint over more than three…
Sagging
Downward “dropping” movement of the paint film immediately after application resulting in an uneven coating. Possible Cause: Application of a heavy coat of paint. Application in excessively humid an/or cool…
Peeling
Loss of paint due to poor adhesion. Where there is a primer and top coat, or multiple coats of paint, peeling may involve some or all coats. Possible Cause: Seepage…
Blistering
Bubbles resulting from localized loss of adhesion and lifting of the paint film from the underlying surface. Possible Causes: Painting a warm surface in direct sunlight. Application of oil- base…
Cracking/Flaking
The splitting of a dry paint film through at least one coat as a result of aging, which ultimately will lead to complete failure of the paint. In its early…
