🖌️ Plaster Calculator UAE — Free Online Tool
Plastering is one of the most material-intensive finishing activities in UAE construction. Whether you are applying 12mm internal plaster across a large villa or 20mm external render on a commercial building, calculating exact cement and sand quantities before ordering saves money and avoids costly material shortages.
How to Use This Calculator
- Enter the total plaster area in square metres
- Select plaster thickness — 12mm is standard for UAE internal walls
- Choose mix ratio — 1:4 is most common for UAE internal plastering
- Click Calculate for cement bags, sand in m³ and total dry mortar volume
🇦🇪 UAE Tip: Always use washed fine sand for plastering in UAE. Dune sand and sea sand are prohibited under UAE standards due to high salt content which causes crystallisation and plasterwork failure. For external walls use 1:3 cement-sand ratio with SRC cement to resist sulfate attack.
Plaster Thickness Guide — UAE Standards
- 6-8mm — Skim / finish coat over existing plaster
- 12mm — Standard internal wall plaster UAE
- 15-20mm — External walls or rough block surfaces
- 20-25mm — Two-coat system for very uneven surfaces
Cement and Sand for Plastering — Quick Reference
| Mix Ratio | Use Case | Cement Bags per 10m² |
|---|---|---|
| 1:3 (Rich Mix) | External walls, wet areas | 1.8 bags |
| 1:4 (Standard) | Internal walls — most common in UAE | 1.4 bags |
| 1:6 (Lean Mix) | Background/scratch coat | 0.9 bags |
Frequently Asked Questions
How many cement bags for 100m² of 12mm plaster?
For 1:4 mix at 12mm thickness: approximately 7 bags of cement (50kg) and 0.6m³ of washed sand. Always add 10% extra for wastage and uneven surfaces.
What plaster thickness for UAE internal walls?
12mm is standard for internal plastered walls in UAE. 15-20mm for external walls or rough block surfaces. 6-8mm for finishing skim coat over existing plaster.
How long before painting after plastering in UAE?
Minimum 28 days curing time before applying paint on new plasterwork in UAE. The hot UAE climate dries the surface quickly but cement must fully hydrate before coating.
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