Car Sealer For The Webelos/cub Scouts Pinewood Derby Car Race, Is The Scout Supposed To Apply Sealer To The Wood First?

For the webelos/cub scouts Pinewood Derby car race, is the scout supposed to apply sealer to the wood first? - car sealer

Sealant is for vehicles made of wood (wood block) is primarily used or yellow (or green) are applied the paint in the first place?

The color of the paint and sealer / varnish has set the habit of finishing. The instructions are clear.