I am looking at painting a metal sheet fence with a spray gun.
How do I calculate the amount of paint needed?
What are the preparations that I need before painting, should I use a primer, do I need to wash it first with a pressure hose? Sand it?
The fence is a Galvanized steel fence, and it has been painted before. I will be spraying outdoors, and there is small gaps between the sheets. they are +- 2 meter wide sheets side by side.
The spray gun I am using: High Volume Low Pressure (HVLP) system with 1.4-1.7mm Fluid Tip.