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What Primer Do I Use to Go From Varnish to a Paint Finish?

It is common for paint and primer to peel off after application to varnished surfaces because the varnish is so smooth and hard that the primer never successfully adhered to it. If you want to paint over varnish, you should sand the varnish to roughen its surface, clean it well, then cover it with a high-quality primer before painting. After that process is complete, the paint should attach successfully. However, varnish is notorious for being difficult to cover with paint.
  1. Oil Based Primers

    • The primers that adhere most successfully to slick surfaces are oil based, so use one of these if you want to avoid having your paint peel off. When you visit the store to buy paint, ask the salesperson to direct you to primers that will cover varnish. The most popular brands of this type are Zinsser and Kilz. However, all primers are designed to adhere to surfaces and to cover fully. If you choose a quality primer, as long as the label does not advise against using it on slick surfaces, it should create a painting surface that is stable and usable.

    Painting Over the Primer

    • You can paint over oil-based primer with either oil-based paint or water-based paint. Both will adhere to oil-based primer well. However, you should allow the primer to dry fully before you apply paint. If you do not wait, the paint can smear and the primer itself might not attach to the varnish underneath. If you have no preference for oil-based or water-based paints, go with the oil-based paint, which generally works better with the oil-based primer.

    Reading the Label

    • Look for a primer with a label that mentions that it can be used on either varnish, glass or tile. All of these smooth surfaces are comparable to the qualities of a varnish finish, and a varnish that is capable of adhering to any of these should work well. Follow any warnings or directions closely.

    After Painting

    • Dry the paint well before touching it, and do not place any objects on a newly painted surface. Be especially careful when using tape to create patterns with the paint, as peeling the tape off can remove any paint that is loose.

    Another Option

    • Because varnish presents so many problems when painted over, you may want to consider sanding all of the varnish off before painting. This will allow you to apply the primer and paint to a surface which is much less slick.