Difference Between Wall Putty & Plaster: A Complete Guide for Builders & Homeowners
May 15, 2025
When it comes to finishing interior or exterior walls, many people often confuse wall putty with plaster. While both serve crucial roles in surface preparation and aesthetics, their functions, application stages, and composition differ significantly.
In this guide, we’ll clearly explain the difference between wall putty and plaster, when to use each, and how high-quality products like Ascolite Wall Putty and Ascolite Ready Mix Plaster can ensure superior results in your construction or renovation project.
What is Plaster?
Plaster is a building material used to cover rough brick or concrete walls. It creates a smooth, hard surface suitable for painting or wallpapering.
Common Uses:
- First-stage finishing over brick walls
- Leveling uneven wall surfaces
- Interior and exterior wall coverage
Types of Plaster:
- Cement Plaster: A mix of cement and sand
- Gypsum Plaster: For quicker drying and less shrinkage
- Ready Mix Plaster: Pre-blended for consistency and faster application
When to Use:
Use plaster during the initial stages of wall finishing, right after masonry work is complete.
What is Wall Putty?
Wall Putty is a fine white powder or paste applied after plastering to fill surface imperfections and provide a smooth, even base for painting.
Common Uses:
- Pre-paint base coat over plastered walls
- Fills minor cracks, dents, and holes
- Increases paint adhesion and life
Types of Plaster:
- White Cement-Based Putty
- Acrylic Putty (used for interiors)
When to Use:
Use wall putty after plastering and before painting to prepare a flawless paint-ready surface.
Wall Putty vs Plaster: Key Differences
| Feature | Plaster | Wall Putty |
| Purpose | Covers and levels rough walls | Smoothens plastered walls |
| Application Stage | After masonry, before putty | After plastering, before painting |
| Base Material | Cement/sand or gypsum | White cement or acrylic |
| Surface Type | Brick/concrete | Plastered walls |
| Thickness Applied | 10–15 mm | 1–2 mm |
| Primary Benefit | Structural and leveling base | Smooth paint-ready finish |
Why Use Ascolite Ready Mix Plaster?
Ascolite Ready Mix Plaster is a pre-blended dry mix of cement, graded sand, and performance-enhancing additives. Unlike conventional plaster, it:
- Saves time on-site with no mixing errors
- Offers consistent workability and bonding
- Reduces cracks and shrinkage
- Increases productivity with faster application
Ideal for both internal and external walls, it ensures long-lasting, smooth finishes.
Why Choose Ascolite Wall Putty?
Ascolite Wall Putty is a premium white cement-based putty designed for superior paint adhesion and long-term durability.
Benefits include:
- Excellent smoothness and coverage
- Strong bonding with base plaster
- Water-resistant and alkali-resistant properties
- Prolongs the life and beauty of paint
Whether you’re working on interiors or exteriors, Ascolite Putty ensures a perfect finish every time.
Conclusion: Use Both, But at the Right Stage
To summarize, plaster and wall putty serve different roles in the wall finishing process:
- Use plaster for surface leveling after masonry.
- Use putty to prepare a smooth, paint-ready surface after plastering.
By choosing Ascolite Ready Mix Plaster and Ascolite Wall Putty, you ensure quality, consistency, and long-term protection for your walls.
