Do you need to “seal” window trim after painting? (paint, color)

[MandyBlue]

I did 2 coats of primer and 2 coast of enamel paint on my windows. Do I need to add some sort of sealer on top?

[World Citizen]

Enamel paint doesn't need to be sealed.

[K'ledgeBldr]

In your particular case- the paint is the sealer. The vehicle, or binder is the actual "film"(sealer) of the paint. The binder creates adhesion, binds pigments (color) together, durability, and flexibility.

[jenlion]

Just caulk around it so there's no gaps between the trim and the sill or the wall. Bonus, looks better and more "finished" after.