Cement and Sand for Plastering: Quantity Guide

Plaster quantity depends on surface area, plaster thickness, and mix ratio (often 1:4 or 1:6 cement:sand for internal walls, depending on specs).

Steps

1. Measure net plaster area (walls minus openings).
2. Wet volume = Area × Thickness.
3. Convert to dry volume (commonly × 1.27 to 1.35 for plaster—confirm local practice).
4. Split dry volume by mix parts into cement and sand; convert cement to bags.
5. Add 5–10% wastage for site losses.

Run the numbers in the Plaster Calculator, then cross-check bulk materials with the cement and sand calculators before ordering.