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Recently, I have been trying to paint over a painting I've painted before but don't like. Unfortunately, every time I paint over it, it leaves a weird texture or it sort of soaks into the canvas and leaves weird marks and you can still see the painting underneath it. Is there any way I can prevent this from happening or is there a certain pant I should use?

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    Can you give more details? What's the paint you're working with, what type of paint are you attempting to cover, what type of canvas are you working on, etc.? – Joachim May 10 '19 at 6:52
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I would try sandpaper or even an environmentally friendly (low fume) paint stripper. Other solvents might also be a worth a try, for example mineral turps for oil. Another option is to use a heat gun to soften it and then scrape it off with a flat bladed scraper used for plastering. I did this today successfully, just don’t touch the blade as it gets extremely hot after being near the heat gun.

Unless you can add a very thick layer higher than the depth of the original's texture, I think you'll have the same problem.

If the canvas is mounted on board, it is easier to scrape off. If it's a stretched canvass, you might need to be more careful in the scraping part -- you don't want to catch the (sharp-edged) scraper in the canvass and make a tear.

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Just apply a thick layer of the canvas preparation, Gesso, over the existing paint. That will handle the absorbency issues and somewhat reduce the texture issue.

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  • Depending on the paint used this could be a bad idea. – Joachim May 12 '19 at 13:59
  • @Joachim, for all of our sakes, could you be more specific about why it is a bad idea and which paints produce specific negative results. Leaving us to experimenting to find what you already know is exactly opposite of what this forum is about. – Henry Taylor May 12 '19 at 14:18
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    It was meant as a reference to my comment on the OP. For example, you shouldn't cover up oil paints with gesso, since they have very different curing times. That's why I said it could be a bad idea - not that it was :) – Joachim May 12 '19 at 16:31

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