Dan Posted March 20, 2020 Report Share Posted March 20, 2020 So, any thoughts on this painting scenario? I have trim (baseboards, door frames) that's been painted with latex semi-gloss and I want to repaint with an alkyd paint. So far I've puttied a few dings, primered the new putty, and washed everything with TSP then rinsed. Question: do I need to sand? If I use latex primer first, can I skip sanding? Or can I just go ahead and paint with my alkyd paint? I really don't want to sand because I don't feel confident I can get good coverage on every surface. I'd rather primer if it came to that, or just go straight to alkyd paint over the existing paint if adhesion isn't a concern. LMK your thoughts, I want to get this done by the end of the weekend! Quote Link to comment Share on other sites More sharing options...
lowrider Posted March 21, 2020 Report Share Posted March 21, 2020 Rule of thumb that I am aware of is oil over latex. Rough up with scouring pad and wipe down then paint away ! 1 Quote Link to comment Share on other sites More sharing options...
big mario Posted March 21, 2020 Report Share Posted March 21, 2020 2 hours ago, lowrider said: Rule of thumb that I am aware of is oil over latex. Rough up with scouring pad and wipe down then paint away ! Always need to tooth, even minimally, otherwise paint will come off in sheets. Quick pass or 2 with 220 should suffice. You could chemically tooth, but that's nasty Mario Quote Link to comment Share on other sites More sharing options...
bumpyride Posted March 21, 2020 Report Share Posted March 21, 2020 Can an oil-based paint be used over a surface already painted with latex paint? The truthful answer to this question is that you shouldn’t paint an oil-based product directly over latex paint, but it can be done if a sealing coat is used to separate the layers. Because latex paint has built-in flexibility, it doesn’t make the ideal base for oil paint, which has a hard finish. It’s also far trickier to achieve a good result if the latex paint is relatively new. The task requires paying attention to preparation, which is the key to all successful DIY jobs. Quote Link to comment Share on other sites More sharing options...
Dan Posted March 21, 2020 Author Report Share Posted March 21, 2020 Thanks guys, a sanding pass it is. Really appreciate the input. The latex is well-cured (2+ years). Quote Link to comment Share on other sites More sharing options...
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