Plaster Calculator | Cement & Sand for Render and Spatterdash

Plastering, Rendering & Stucco

Plaster Render & Spatterdash Calculator

Calculate cement, sand, and water required for the spatterdash key coat and main plaster render coat at various thicknesses, including corner fiber mesh.

1 Surfaces to Plaster

Net Walls Area (m²)

Ceiling Area (m²)

Openings deduction (m²)

2 Plaster Thickness & Specifications

Plaster Render Thickness (mm)

Rebound & Application Waste

Number of plaster layers

Mix ratio (cement : sand)

Include Spatterdash Bond Key Coat (5mm)

Instant Results & Bill of Quantities

Total Plaster Cement Bags 0 كيس 50كجم 0.0 tons Portland cement

Washed Sand Required 0.0 م³ Approx. 0 tons washed sand

Fiber Mesh Corner Rolls 0 لفة (50م) Concrete-Block Joint Mesh

Breakdown for Spatterdash & Plaster Coats:

Layer / Coat	Cement (Bags)	Sand (m³)	Mixing Water (L)

Result type: Material Consumption Estimate

Formulas & Assumptions

Formulas used

V_wet = A × t × (1 + Waste)Wet mortar volume
V_dry ≈ V_wet × 1.30Approximate dry volume after sand bulking
Cement = V × bags/m³Cement bags required
Sand = V × 1.1 (m³)Sand volume

Assumptions & reference values

Editable assumptionWet→dry volume factor ≈ 1.30 depending on sand bulking.
Default valueDefault render mix 1:4, spatterdash 1:2 — editable.
Industry estimate≈ 7 cement bags per m³ of 1:3 mortar.

Notices: This result is intended for quantity estimation. Verify quantities against approved drawings and project specifications before procurement or construction.

This calculator provides quantity and preliminary cost estimation. Structural design, material specifications and final quantities must be verified against project drawings, specifications and applicable engineering standards.