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Defects-Prevention-Remedy Guide
KnowledgeBase about the common damages, its prevention and the recommended solutions.



Pinholes:
Causes:
- Inclusion of air
- Residual strain
Prevention:
- Modification of the painting environment
- Lengthening of the setting time
- Reduction of the paint's viscosity
- Modification of the paint and solvent mixture ratios
Remedy:
- Sand surface to smooth the holes and repaint.

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:
- Remove algae / fungus by high-pressure washing.
- Treat surface with Nippon Paint Fungicidal Wash. Wash again to remove any residue.
- Allow wall to dry before applying with recommended paint.
Remedy:
- Clean with bleach solution and repaint.

Sags and Runds:
Causes:
- Application of excessive thick coat.
- Use of a wrong thinner.
Prevention:
- Apply finish coat using recommended thinner.
- Do not apply thick coats.
Remedy:
- Sand surface to smooth the sagged areas and repaint.

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

Cissing
Causes:
- Mold release agent (i.e., silicon oil)
- Machinery grease
- Dust or other contaminants attracted by static electricity
Prevention:
- Clean surfaces prior to sanding and remove all sanding dust.
Remedy:
- Remove paint completely from affected areas and repaint.

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.

Poor Adhesion:
Causes:
- Application of paint over oily, greasy or very smooth surface.
- Application over loose particles like dust or rust
- Condition of the paint (i.e. thinner, viscosity, film thickness).
- Matching of the substrate and paint (i.e. solubility and wetting, etc.)
- Not sanding previous coat of gloss paint
- Application over partially dried coat.
Prevention:
- Ensure proper surface preparation.
Remedy:
- Surface should be repainted

Peeling:
Causes:
- Moisture on the wall
- Poor surface preparation or using incorrect painting system
- Happens on walls as well as wood or metal surfaces.
Prevention & Remedy:
- Walls
   • Check and repair water seepage.
   • Ensure walls are dry before painting.
   • Use an alkali-resistant basecoat or sealer.
   • Patch surface defects with putty.
- Wood
   • Prime wood before painting, sand surface and clean off dust.
- Metal
   • Remove all paint from metal before re-painting. Prime surface and re-coat with suitable paint.

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.
- Make sure paint is not adulterated with foreign materials.
Remedy:
- Remove any unstable paint films.
- Exposed base should be then rubbed down to a smooth face and primed before repainting.
- Allow wall to dry thoroughly, and repaint with recommended paint.

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.
- Make sure the wall is completely dry before painting.

Courtesy: UMG ABS., Asian Paints, Nippon Paints



Defects-Prevention-Remedy Guide
KnowledgeBase about the common damages, its prevention and the recommended solutions.

Interior/Exterior Sampler
This will help you to pick a sample model (interior/exterior photograph) and know what all materials/paints are used.

Basic Colour Names
Basic colour shades and associative colour names.

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