Polyurethane Over Oil Paint. Non poly varnish is better. But with careful preparations, you can paint over finished wood in your home and update its look. Improper techniques can lead to your paint finish to fail;
Painting over polyurethane woodwork can be time consuming, and maddening.
You don't have to remove all the varnish before you start painting. For years i avoided polyurethane for my diy projects because it was so difficult to apply. A wide variety of paint over polyurethane options are available to you, such as hot melt adhesives. You can paint over a surface of polyurethane varnish if you prepare it properly. Polyurethane is typically hard, durable and glossy, and it is these qualities that make a finish vulnerable to chips and flaking. Some woodworkers like to use spray poly for a thin topcoat over base coats of conventional polyurethane. Question can an oil base paint be coated by a polyurethane clear coat finish? Polyurethane is a protective finish applied to wood to guard against it wear and other damage.