1. What is Plastering Sand Ratio?

The plastering sand ratio refers to the proportion of cement to sand used in plaster mixes. Common ratios are 1:4 (one part cement to four parts sand) for walls and 1:6 for ceilings or internal surfaces.

2. How Does the Calculator Work?

The calculator provides the standard mix ratio based on your selection:

Where:

• 1 — Represents one part cement
• 4 or 6 — Represents parts of sand

3. Importance of Correct Ratio

Details: Using the correct sand ratio ensures proper workability, strength, and durability of the plaster. Incorrect ratios can lead to cracking, poor adhesion, or weak surfaces.

4. Using the Calculator

Tips: Select the appropriate ratio for your application - 1:4 for most wall plastering or 1:6 for ceilings/internal walls where a smoother finish is needed.

5. Frequently Asked Questions (FAQ)

Q1: Why different ratios for walls and ceilings?
A: Ceilings require a smoother mix (more sand) for easier application overhead, while walls need stronger mix (more cement) for durability.

Q2: Can I use a different ratio?
A: While possible, standard ratios are tested for optimal performance. Deviations may affect plaster quality.

Q3: What type of sand should be used?
A: Use clean, well-graded plastering sand free from impurities and organic matter.

Q4: How much water should be added?
A: Enough to achieve a workable consistency - typically about 20% of cement volume, but adjust for conditions.

Q5: Does climate affect the ratio?
A: In extreme conditions, slight adjustments may be needed - consult local building practices.