The contractor did prep the supports for painting. Look at all the white spots/sections on both the supports and track. Baynum preps the surfaces by power washing and priming the areas of the structure where the metal surfaces might be exposed after cleaning them.I think it's really funny that they're not prepping the supports. They're just rolling black right over. Do not be surprised when you see yellow poking through in the next years.
Plus, they are going from a bright color to black. No need to fully prime every surface. It would be different if going back to a bright color from black. Then there could be a high chance they would have to prime with a white or off-white neutral color.
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