A polyurethane finish or varnish is a durable coating that protects a wooden surface, which means you can’t paint directly over it or your paint won’t adhere to it. 3. Can you apply a clear sealer or polyurethane over a deck stain? If not, the newly-painted surface will bubble, peel, crack or generally not stick. -----ANSWER: Yes! This should be ok if you gave the stain 3-4 days to properly dry out.You'll want the oil-based drying agent to completely vaporize from the stain before applying the water-based finish.You may apply the Minwax Water Based Polyurethane over a fully cured Minwax Wood Finish Stain (oil-based).

It is not recommended and should really be avoided if possible as it will peel and blister. You don't have to remove all the varnish before you start painting. You can paint over a surface of polyurethane varnish if you prepare it properly. Q: My childhood dresser is beautiful but the wood stain looks faded. I shared the makeover of a Mid Century Modern Credenza last week where I used General Finishes Gel Stain over the existing finish on the piece and wanted to share how I did that.. Use a varnish if the spray paint is an oil base or use an acrylic urethane if it is water based. 2 - Locate and sand any really rough spots, spackle and sand any holes . Unfinished wood is often sealed with a polyurethane finish or another sort of topcoat, and in this case, you can't stain the wood, but you can use a colored coating to change the color of the wood. DIRECTIONS Prepare existing surfaces first by cleaning well. Short answer: yes. They are not solvent-based, they are rather harsh detergents, so wear gloves. If you want to touch up furniture with a polyurethane finish without completely refinishing the piece, you can use a polyurethane stain blend like those sold on Minwax.com. Stain on its own is, to a degree, a sealer for wood. Can I apply water-based polyurethane over an oil based stain? You can mix 2 or more stains together to make DIY custom stains. If you are wanting to apply gel stain over a painted furniture piece, you will use the same process as below for applying gel stain over stain. The exact type of clear depends on the type of paint. However, some polyurethane-blend stains are designed to be used over a polyurethane finish. Warm stains work great to slightly warm up cooler toned stains. You need to reapply the Thompsons every year, but that's not a big deal. How many coats of top coat are you supposed to apply over gel stain? You can paint over a surface of polyurethane varnish if you prepare it properly. 3 - Paint over the knotholes (just in case the poly is not stain-proof) with alcohol-based shellac primer. but the underlying finish has to be absolutely dry.-----Water Based over Oil Based-----When using a water based topcoat over an oil based stain, allow oil based finishes, such as Java Gel Stain, to dry at least 72 hours before coating with a water based topcoat.