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Painting over Lacquer
Question
Forum Responses
From contributor R: If you plan on cleaning whatever you plan on finishing with the latex, and your concerned with the sanding dust, why not use a Purple Scotch Brite Pad dipped into a mixture of water and TSP? You can kill two birds doing this. First off you get a real clean surface, which latex likes; and by using the Scotch Brite, you get a slightly etched surface thats suitable for the latex coating. From contributor T: How about a 50/50? Washing it down well with TSP will usually etch the existing finish by itself - an essential step and Scotch Brite won't hurt anything. Then prime with BIN and finish with your latex. Just be aware that the latex can take up to a month to cure so don't expect to do an adhesion test a day after you finish it. An alternative would be to finish with a pigmented lacquer in the color of the latex. Several companies offer custom color matching of lacquer. You tell them the paint brand and color you want - they send you color matched lacquer.
From contributor C: Sand it well and prime twice, sanding between coats of primer with 1-2 day dry time in between. Otherwise, you run the risk of the latex bubbling and peeling. There's no easy way if you want to do it only once. From contributor W: You have to make sure that whatever kind of paint you use is lacquer-based or you will have a chemical reaction between the paint and the finish that you are painting over. 95% of the time the end result is money out of your pocket. You can use the finish coat you are painting over as your primer coat I think it comes out a little smoother.
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