The actual amount of coating can be calculated according to the above formula as long as the coating area is known, but the actual coating loss percentage is uncertain because the actual construction is affected by many factors, such as construction methods, workers’ skills, The structure and shape of the coating, surface roughness, working environment, wind speed, high altitude, day or night, and the distribution of the paint film, etc.
Under normal circumstances, the loss of paint is usually 25%~40%, but it may be as high as 50%. When calculating total paint consumption, especially when making actual orders, it is necessary to include this part of paint loss.
In order to calculate the actual amount of paint, it is necessary to introduce the concept of consumption factor CF (consumption factor). Assuming that the paint is lost by 40%, CF is (1-40%), that is, 60%. This concept means that only 60% of the paint is actually left on the object being painted, while 40% of the paint is lost.
