Types of Wall Putty

by Dr E. Ramanathan

Wall putty is a material applied to walls before painting to provide a smooth surface, fill cracks, and enhance the paint’s durability and aesthetic appeal. Different types of wall putty are designed for specific applications and surfaces.

1. Cement-Based Wall Putty

• Composition: Made from white cement, polymers, and minerals.
• Applications: Used on both interior and exterior walls.
• Features:
  • High durability.
  • Strong adhesion to plastered surfaces.
  • Can withstand moisture.
  • Ideal for rough and uneven surfaces.
• Limitations: May crack if applied in thick layers or on improperly cured walls.

2. Acrylic Wall Putty

• Composition: Made from acrylic polymers and additives.
• Applications: Best suited for interior walls.
• Features:
  • Smooth and soft finish.
  • Easy to apply and sand.
  • Resistant to stains.
  • Offers better workability than cement-based putty.
• Limitations: Not ideal for damp or exterior surfaces.

3. Gypsum-Based Wall Putty

• Composition: Made from gypsum and polymer-based additives.
• Applications: Primarily used for interior applications.
• Features:
  • Lightweight and easy to handle.
  • Dries faster compared to cement-based putty.
  • Provides a superior, smooth finish.
  • Can be directly applied to drywall or plastered surfaces.
• Limitations: Less resistant to moisture; unsuitable for exterior walls.

4. Polymer-Based Wall Putty

• Composition: Contains polymers, minerals, and fillers.
• Applications: Versatile, suitable for both interiors and exteriors.
• Features:
  • Excellent bonding strength.
  • High resistance to cracks and shrinkage.
  • Can be applied in thin layers.
• Limitations: More expensive than traditional cement-based putty.

5. Oil-Based Wall Putty

• Composition: Includes linseed oil, pigments, and fillers.
• Applications: Ideal for wooden surfaces and metallic finishes.
• Features:
  • Provides a water-resistant layer.
  • Excellent adhesion to wood and metal.
• Limitations: Less commonly used for masonry walls due to its greasy nature.

6. Exterior Wall Putty

• Special Features: Specifically formulated to withstand harsh weather conditions, UV rays, and moisture.
• Uses: Ideal for exterior walls to prepare them for painting.
• Advantages:
  • Long-lasting and durable.
  • Can be applied to concrete, plaster, or masonry surfaces.

Comparison of Major Wall Putty Types

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