will I need?
To give you an idea of how much you will need we have provided this conversion chart.
Length x Width = m² (metres squared) Eg: L 4.000 x W 2.000 = 8m²
Square metres converted to cubic metres
Length x Width x Depth = m³ (cubic metres) Eg:
L 4.000 x W 2.000 x D 0.100 = 0.8m³
Coverage per cubic metre
1 Inch is 25.4mm
1m³@ 50mm = 20m²
1m³@ 75mm = 15m²
1m³@ 100mm = 10m²