It is "have painted" or "has painted."
The surface wasn't completely clean. As the paint dried it stretched and pulled apart on the grease. Using a primer first may have stopped this from happening or several thin coats. I assume you sprayed it.
my best guess is you didn't allow paint ample amount of time for drying or your weather stripping may be old at which case needs to be replaced
Who painted is correct.
The past tense of paint is painted. Had painted is the past perfect tense.
The answer will depend on the surface being painted and the nature of the paint. The paint tin will state its coverage rate.The answer will depend on the surface being painted and the nature of the paint. The paint tin will state its coverage rate.The answer will depend on the surface being painted and the nature of the paint. The paint tin will state its coverage rate.The answer will depend on the surface being painted and the nature of the paint. The paint tin will state its coverage rate.
Painted is the past tense of paint.
Painted.
If you used a good quality paint, there should be no possibility of water stains. Unfortunately, there are plenty of inferior paints that don't provide the protection that you need.
Some were painted with a brush, some were dip painted, and some were spray painted.
Yes, you can.
The past tense of paint is painted.