I purchased an 1850s farmhouse from a flipper (not a great idea). All the new trim around the windows and some beams added to the newer part of the home have knots and wood tannin that have bled through the paint. I tried KILZ and repainting and the knots came back. I now know that I should use a shellac-based primer or B-I-N and then repainted, but honestly, I'm not keen on the chemicals. Are there any green solutions? Something to seal in/block the weeping that is not harsh?
And I have tried to see the beauty in those knots, but five years later it isn't working! Thanks for any suggestions.