will need to use a knotting solution on all knots, an acrylic primer will be fine, then undercoat and lastly a gloss. If wood has already been painted, then you will only need an undercoat and a gloss coat. If painting outside, it would be ideal to apply 2 coats of gloss due to weather conditions. Can I put high gloss polyurethane right over semi gloss High opacity primer/undercoat over a de-greased and prepped surface should work fine, unless there is residual nicotine staining present, in which case Coverstain or its ilk would then be used. We used to do 1 coat of acrylic primer under gloss in council gaffs years ago, but those were empty houses, and so generic and anonymous, as to have no comeback whatsoever.which was just? The answer is in general yes, but unless the gloss is less than 4 hours old, it will need a light sanding to scratch the surface so the next coat will bond. I want this one to be a daily driver so it will be on the mild side, just dependable. The reason they suggest not using an acrylic primer with oil based paint is because the oil based paint takes longer to dry than acrylic which could cause cracking of top coat, but if acrylic is dry properly. Brunswick is almost local too; it's Viponds. On new timber, we knot, sand and fill, and then x2 undercoats, x1 glosss. I've had oil leakers like the one you describe and it sure does protect the metal. Any rolled surface will have texture, so I suspect this will show up when you put the lights on, which might not be quite what you had in mind (if I understand your comments about the glitter). Your pic is quite fuzzy. As far as I know undercoats are generally 'flat'.