Water is a poor substitute.
Achohol or mineral spirits vinyl siding.
Mineral spirits or denatured alcohol.
Look for a remover that won t leave discoloration on the siding.
Alcohol can be rough on the paint finish so i d recommend mineral spirits.
Scrub the paint with a soft bristle scrub.
If portions of the siding are discolored even after drying completely there can be various causes not all of which would be the fault of the cleaner nor cleaning process.
Mineral spirits isn t very strong but it might dull the siding if he used brush cleaner he should have known better.
Mineral spirits typically cost around 12 per quart versus as little as 8 per quart of paint thinner.
Don t use solvents such as acetone lacquer thinner or mineral spirits to clean vinyl siding.
You will need one of these cleaners to prepare the surface.
Wipe the paint using a piece of cloth dipped in mineral spirits.
You ll also find odor free mineral spirits at about 15 per quart view example on amazon.
Mineral spirits are less harsh but they do have mild rubber damaging effects.
Actually he should have known better than to get overspray all over the siding.
Let the mineral spirits sit for a few minutes before scrubbing them off.
You ll need to use graffiti remover to get rid of spray paint.
Rinse the area thoroughly afterward to remove any residue from the alcohol.
Steps to remove the paint.
Let the mineral spirits sit on the paint for a few minutes.
Removing oil based paint you will need.
Repeat the process until the paint is removed.