•
Paint not hiding the previous coating
Possible Causes
Too much thinning of paint than desired
Previous paint-coating very dark and topcoat applied without primer-putty
primer
Recommended number of coats of paint not applied
•
Poor Coverage
Possible Causes
Less thinning than recommended
Surface being painted is rough or not prepared as recommended
Applied more coats than needed
Poor quality of application tools
•
Dust/bittiness on new paintwork
Possible Causes
Dust or dirt in the atmosphere settling on the surface during or after
application.
During surface preparation, the surface is not cleaned properly after sanding.
Therefore loose particles may get mixed with the paint while application.
Use of a dirty application tool.
•
Poor gloss level in solvent based paints
Possible Causes
Painting in cold and damp condition, that causes condensation on the newly
painted surface.
Use of incorrect solvent, contaminated solvent or solvent with traces of water
Application of paint in a poorly ventilated room
Lack of adherence to manufacturers recommendation for necessary gap
between subsequent coats
•
Sagging/Running of Paint
Possible Causes
Application of too thick paint coating at a time
Over dilution of paint
Application of paint on a very smooth surface( without sanding)
•
Slow Drying
Possible Causes
Too thick application
High humidity and/or low temperature during paint application
Improper ventilation, Application being done in confined area
Use of contaminated/ improper thinner and not the recommended thinner
Lack of adherence to recommended dilution ratio
Recommended system usage not adhered to. For instance, not adding
adequate hardener in a two pack system like Melamine, PU.
•
Shade Variation
Possible Causes
Paint not thoroughly mixed prior to application
Application of very thin or thick coat over the surface
Use of light top coats over very deep undercoats.
Use of colored or dirty thinner for thinning paint sample
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PROBLEMS DURING PAINTING
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