If you have ugly stained and varnished doors and trim and you'd like to paint the whole works, here's the best way to get a good-looking result. Start by sanding the surface with a random-orbital sander and 150-grit paper. Use a fine-grit sanding sponge to get into crevices. Don't try to sand off all the varnish.
Similarly, can you paint over a varnish?
Apply a coat of primer. If the varnish is dark and very hard to cover, you may want to apply 2 coats of primer. It is best to use an oil bonding primer to paint over the varnish. The oil bonding primer will create a good surface for the paint to stick.
Can you paint over polyurethane finish?
But with careful preparations, you can paint over finished wood in your home and update its look. It requires some patient sanding and oil-based paint products to adhere to the plastic and polyurethane finishes on wood and commercial wood furniture.
Can you stain over a polyurethane finish?
Polyurethane stain blends are available in the most-common wood stain colors. They are applied over the old finish, and aren't designed to soak in, so you don't have to sand or strip off the polyurethane. Another option is oil-based paint, but its opacity can mask the wood grain.
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