Plastering Calculator
Calculate cement and sand needed for wall plastering. Choose mix ratio (1:3 to 1:6), plaster thickness, and number of coats to get material quantities in bags and cubic feet with cost.
๐๏ธ Plastering Calculator
Volume
Wet Volume0.111 mยณ
Dry Volume (ร1.35)0.150 mยณ
Materials
Cement0.9 bags (50 kg)
Sand4.3 cu ft
Sand0.120 mยณ
Water (approx)22 liters
Cost
Cement Costโน350
What Is Plastering?
Plastering is the process of applying a thin coat of cement mortar on walls, ceilings, and columns to create a smooth, protective, and aesthetically pleasing surface. It protects masonry from moisture, provides a base for painting, and improves structural durability.
Plastering Mix Ratios
| Mix Ratio | Application | Thickness |
|---|---|---|
| 1:3 | External walls, waterproofing | 15โ20 mm |
| 1:4 | External walls (standard) | 12โ15 mm |
| 1:5 | Internal walls | 12 mm |
| 1:6 | Ceilings, internal lean plaster | 6โ8 mm |
How to Calculate Plastering Materials
- Find the area โ Length ร Height of each wall. Subtract door/window openings.
- Calculate wet volume โ Area ร Thickness (in meters).
- Convert to dry volume โ Multiply wet volume by 1.35 (shrinkage factor).
- Split by ratio โ For 1:4, cement = dry vol ร 1/5, sand = dry vol ร 4/5.
- Convert cement to bags โ 1 bag of 50 kg cement = 0.035 mยณ.
Plastering Cost (India, 2025)
| Component | Rate |
|---|---|
| Cement (50 kg bag) | โน340โโน400 |
| Sand (per cu ft) | โน30โโน50 |
| Labor (internal) | โน18โโน25/sq ft |
| Labor (external) | โน22โโน30/sq ft |