With the nearly total phase-out of oil-based paint in the U.S. in 2005, the question of whether you can paint latex over oil-based paint is even more perplexing. If a house is old enough, it is inevitable that it will have oil-based paint somewhere since latex paint wasn't introduced until the 1940s. Before painting an old door, it's important to determine if the original paint is oil-based or latex; latex paint will not adhere to oil-based paint unless certain preparatory work is done. Soak a clean rag in denatured alcohol and rub the surface of the door. If the paint starts to soften, it is latex. If it doesn't, the paint is oil-based.
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.Author: DIY Staff. Sep 11, 2017 · Using latex over oil based paint has generally been seen as a no-no, and for good reason. Just taking a quick glance at the picture for this blog post will give you an idea of what will happen every single time you do.
Nov 06, 2013 · When we bought our house, the seller told us that all the trim in the house and the bathroom walls were painted with oil based paint, and warned us not to paint over this with latex based paint (we didn’t know why, but more on that in a minute). Dec 17, 2015 · Hello paint experts. Hoping you all can help. The painters in our new (very old) row house painted much of the trim with latex paint over the existing oil paint without priming (despite being asked to do just that). As a result the latex just peels right off the old oil paint. We had this problem in.
Painting over Oil based Paint. Painting over oil based paint can be done with all kinds of paint, but you might need to do a primer coat first. Painting latex over oil paint directly is not a good idea (it won't hold), but a shellac primer or sealer makes it hold. For acrylics, use an oil-based or acrylic primer. Nov 13, 2017 · When the primer coats are dry, you can then successfully use latex paint. If the paint comes off, it is a water or latex-based paint and you can proceed by painting over the surface with any type of paint. If you are painting over stained wood, you need to use a stain-blocking primer.