Plastering Calculator

Industry-Standard Quantity and Cost Estimation of Plastering Materials for Walls and Ceilings Imperial Units

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Project Parameters

ft
ft
mm
Windows & Doors (Area Deduction)

Plaster Type

Cement & Sand Mortar Mix
Selected Mix: 1:3
Strength:High (>10 MPa)
Best For:Load-bearing walls

Material Costs

$
$
$/hr
Standard Cement Bag: 50 kg

Material Wastage

Applied to all material quantities and costs

5% Minimal22.5%40% Complex
Note: Wastage percentage is applied to cement, sand, water quantities, and all associated costs.

Calculation Results

Wet Volume
0.0000m³
Dry Volume (×1.33)
0.0000m³
Cement (with Wastage)
0.0kg
0.00 bags (50kg)
Sand (with Wastage)
0.0000m³
0.00 tons | 0.00 ft³
Water Required
0.0liters
0.00 gallons
Total Material Cost
$0.00
Labor Cost
$0.00
0 hours
Total Project Cost
$0.00
Project Summary
Surface Type
Interior Walls
Plaster Type
Gypsum Plaster
Mortar Mix
Thickness
12mm
Wastage Applied
15%

Cost Breakdown

Cement Cost:$0.00
Sand Cost:$0.00
Labor Cost:$0.00
TOTAL PROJECT COST:$0.00

Industry Standard Calculation Method

  • Wall Surface Area: (Length × Height × Number of Walls) - Window/Door Areas
  • Ceiling Area: Length × Width
  • Wet Volume: Area × Thickness (converted to cubic meters)
  • Dry Volume: Wet Volume × 1.33 (mortar expands 33% when water is added)
  • Cement Quantity: Dry Volume × (Cement Parts / Total Parts) × 1440 kg/m³ × (1 + Wastage%)
  • Sand Quantity: Dry Volume × (Sand Parts / Total Parts) × 1600 kg/m³ × (1 + Wastage%)
  • Water Requirement: Dry Volume × 0.55 m³/m³ × (1 + Wastage%)
  • Labor Hours: 2.5 hours per 100 sq ft of surface area
  • All Costs: Calculated on quantities including wastage
  • Cement Bags: Standard bag size = 50 kg (Quantity ÷ 50)

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