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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 excessively thick coat
- Use of a wrong 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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Checking and Chalking
Causes :
- Cracking of plaster.
- Application of matt finish over glossy undercoat finish
- Application of finish coat before drying of the under coat
- Applying quick hard dry coats over a soft one
Prevention :
- Undercoat and top coat of paint should have identical physical properties
- Allow drying time between two coats
Remedy :
- Entire coat must be completely removed.
- Exposed base should be then rubbed down to a smooth face and primed before repainting
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Cissing
Causes :
- Small impurities in paint (oil, grease) visible at the centre of the hole
Prevention :
- Clean surfaces prior to sanding and remove all sanding dust
Remedy :
- Remove paint completely from affected areas and repaint
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Yellowing
Causes :
- Paint film is deprived of natural sunlight (especially in case of enamels)
- Paint film subjected to too much sunlight
Prevention :
- Use paints like Royale, Premium Emulsion
- Improved daylight and ventilation for inside work
Remedy :
- Surface should be cleaned and repainted
- Use recommended system
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Microbial Growth
Causes :
- Painting over a surface affected with microbial growth
- Seepage or dampness in buildings
- Contamination of paint by materials used in putty preparation
Prevention :
- Before painting, area should be cleaned with 5-10 % bleach solution
- Use clear water for thinning and putty preparation
- Keep doors and windows open during and after painting
Remedy :
- Clean with bleach solution and repaint.
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Patchiness
Causes :
- Application of finish coat over spot puttied surfaces
- High alkalinity of surface (evident in new walls)
- Incomplete drying of putty
- Application of thick coat of putty
Prevention :
- Allow new walls to get cured for at least three months
- Apply thin coats of putty
- Always apply a primer coat after applying spot putty
- Always sandwich coats of putty with primer
- Cracks in plaster should be filled with cement sand mixture
Remedy :
- Scrape the surface and repaint adopting the right surface preparation
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