Applying paint conditioner AKA “Paint extender”
Did you know?
The secret to a finish that’s free of lap and brush marks is mixing a paint extender (also called a paint conditioner), such as Floetrol, into the paint.
This does two things:First, it slows down the paint drying time, giving you a longer window to overlap just-painted areas without getting ugly lap marks that happen when you paint over dried paint and darken the color. Secondly, a paint extender levels out the paint so brush strokes are virtually eliminated (or at least much less obvious).If you are a home owner and would like to do it yourself use the extender; it will allow you more time to apply the paint and your results will look professional.