Common Defects
Diagnose your painting woes with our detailed list of common defects, their causes and simple prevention measures.
Here are a few ideas to plan and have your painting job done in a more organised way:
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Low Coverage
Causes :
- Improper thinning and application.
- Highly absorbent surface.
- Rough texture of plaster.
- Top coat application directly over putty without application of primer.
Prevention :
- Please read instructions on shade card or product packaging or refer to “Features and Application” section. Follow recommended instructions on application procedures and thinning.
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Blistering
Causes :
- Caused by trapped moisture or gases in paint film (more likely in enamels).
Prevention :
- Follow the specified recoating time interval.
- Top coat application should not result in too thick a film at a time.
Remedy :
- Smooth sand the surface and then repaint it.
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Poor Adhesion
Causes
- Application of paint over oily, greasy or very smooth surface.
- Application over loose particles like dust or rust.
- Not sanding previous coat of gloss paint.
- Application over partially dried coat.
Prevention :
- Ensure proper surface preparation.
Remedy :
- Surface should be repainted.
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Chalking
Causes
- Application of paint over oily, greasy or very smooth surface.
- Application over loose particles like dust or rust.
- Not sanding previous coat of gloss paint.
- Application over partially dried coat.
Prevention :
- Ensure proper surface preparation.
Remedy :
- Surface should be repainted.
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Orange Peel
Causes
- Application of top coat paint in highly viscous form.
- Use of improper thinner.
Prevention :
- Sufficient drying time between coats.
- Use recommended painting system.
Remedy :
- Scrape out orange peel and repaint.
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Sags and Runs
Causes
- Application of top coat paint in highly viscous form.
- Use of improper thinner.
Prevention :
- Apply finish coat using recommended thinner.
- Do not apply thick coats.
Remedy :
- Sand surface to smoothen the sagged areas and repaint.
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Brush Marks
Causes
- Applying paint using poor quality brushes.
- Highly viscous paint.
- Careless application.
Prevention :
- Use proper brushes and thin paint to desired proportion.
Remedy :
- Sand surface to a smooth finish and apply paint (after thinning to desired proportion).
- Use good quality brushes.
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