Accurately Estimating the Amount of Paint

摘要

CALCULATING COST OF PAINT USED ON A PROJECT Q: Can you please help me calculate the material cost to paint any size surface? Sometimes I use an HVLP spray gun; other times an electrostatic gun. Transfer efficiency varies according to configuration of the part, painter's technique, etc. A: The following equation is in American units, but if necessary you can convert them to metric: Coverage (ft2/gal) = Gals x 1604 (ft2/gal/mil) x % volume solids x % transfer efficiency Dry film thickness (mil) Thickness is expressed in mil = 0.001 inch 1604 is the coverage of one gallon of "solid" at a film thickness of 1 mil. If a can of paint contains no solvents, water or other volatiles, it is said to be 100% solid. Although it might be in liquid form in the can, it will solidify into a solid after it has cured.