My kids want to paint a fence paling (wood) with acrylic paint. It is not attached to the fence so is being painted in a dry undercover area. The paint they plan on using is a craft acrylic paint ( many colours). They have the plan and I don’t want to change their creative vision - just trying to see if an undercoat/ topcoat is suggested.
What product would we use to seal it so it can go in the rain?
What could we use as an undercoat?
Thanks so much.