The weight per unit area gives information on the amount of the material used.
If the weight per unit area is too high, valuable material will be wasted. If it is too low, severe quality defects can occur (internal bond and screw holding capacity).
The material quantity can be optimised and fluctuations reduced by a precise determination of the weight per unit area. For that, a complete measurement is required. For the measurement of finished panels, the raw density or the weight of the panels can be calculated when the panel dimensions are known.