Can You Put Polyurethane Over Satin Paint?

Can You Put Polyurethane Over Satin Paint? Can you put polyurethane over satin paint? Yes, you can put polyurethane over paint. As long as the paint is fully cured and clean, you can apply both water-based and oil-based polyurethane over any type of paint. However, you must be cautious of discoloration, especially from oil-based polyurethane.