You have probably tried to touch up white woodwork in your home after several years and noticed that the new paint is brighter. Can you put polyurethane over chalk paint though the paint is a bit thicker than latex then it does not necessarily cover 1 jacket. When you suggested I consider “waterborne” I assumed you meant as a topcoat over the acrylic latex paint I already used. Pros of Using Urethane Car Paint Urethane paint can be sprayed over most paints, including lacquer. Do not apply water-based polyurethane over the top of gloss latex and acrylic enamel. All bright white paint will yellow slightly with time, even without topcoat. I actually used SW Resilience, which is an exterior acrylic latex paint very similar to A100 (I’m told). That clear coat makes painting over polyurethane or varnish impossible unless you follow these three simple tips! This type is made from plastic resins which will remain clear. I am scared to try water based polyurethane. It's water-based and easier to use. Water-based latex and acrylic latex primers are not appropriate for conditioning polyurethane. Water-based acrylic varnish also can be used over any type of latex paint . Any type of polyurethane can be used over chalk paint. I am using a brush to apply, since I dont have a tip big enough to spray latex. There is a type of lacquer called either cab acrylic or butyrate lacquer. There are water-based polyurethanes not suitable for application over lacquer or shellac. Can urethane be sprayed over enamel? When you're preparing to finish a wooden surface with polyurethane, make sure that you're ok with the more warm tone that this coating will cause. Learn how to apply polycrylic over paint.Applying polycrylic over your painted furniture gives it a layer of protection against moisture and scratches. Polyurethane coatings are made with mineral oil solvents or may be a water based polyurethane, so the answer depends on what you are repainting with, and which polyurethane you are painting over. Use polycrylic instead. A great finish to try is ZAR brand ULTRA Max – a waterborne oil modified polyurethane. Polyurethane can be oil- or water-based, and you can use either kind over latex paint; however, oil-based polyurethane tends to yellow as it ages, whereas water-based varieties stay transparent. Any of the brands listed in this post, including our top pick, can be used if you want to use poly over chalk paint. The water based poly will remain clear. An oil based marine varnish or one of the new silicone clear coats might work but will set you back a chunk. Some of these water-based finishes are not for use over lacquer or shellac. Polyurethane can be used over enamel paint, which often provides a harder finish than latex-based paints. Oil Based over Water Based-----When using an oil based topcoat over a water based stain or milk paint, allow water based finishes, such as HP topcoat to dry at least 24 hours before coating with an oil based product.-----OTHER TIPS:----- Oil based finishes amber over time. Dust generated from lead based products can be very harmful to children under the age of 6. I would not attempt a solvent based poly over water based paint especially with acrylic. It could be used over latex paint. Applicators should use a quality oil-based primer that is compatible with water-based paints. Pros/Cons of Applying Water Based Polyurethane Over Oil Based. Do not use them over … Can Water-Based Floor Polyurethane Be Used Over Paint?. You’ll have to prime, sand and use oil-based paint in order for your paint to stick to the finish of your wooden furniture. Spray lacquer is commonly used on new furniture and in new construction. 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