How to Paint Over Varnish, Polyurethane, Seals and More Without Sanding
Avoiding Sanding and Priming Prep Surfaces with varnish, polyurethanes, or other sealants or finishes require sanding before any paint can be properly applied. If not, the newly-painted surface will bubble, peel, crack or generally not stick. In this post we’ll show you how to create a professional-grade paint job on t
How to Paint Over Polyurethane Woodwork | eHow.com
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. You don't have to remove all the varnish before you start painting.