Floor Screed Calculator

How the calculation works

Volume = area × thickness/1000. Mass = area × thickness/10 × usage per m² at 10 mm × (1 + waste/100). Bag count is rounded up.

Inputs

• Area, m²
• Thickness, mm
• Usage, kg/m² at 10 mm
• Bag weight, kg
• Waste, %

Calculation details

For 20 m², a 50 mm layer, and coverage of 20 kg/m² per 10 mm, net dry mix is 2,000 kg. Use the coverage stated on the selected product.

The average thickness should account for floor unevenness. Water quantity, permitted layer thickness, and drying time depend on the product instructions.