Sent by Erich
Editor - We've had this happen a few times ourselves on older uneven walls. We waited for the paint to dry, carefully used painter's tape on the newly painted side and repainted the white areas using a roller, a tiny brush for speckles/splatters, and a sponge. In certain instances, paint remover can be helpful to clean up areas where paint should not have been applied; the process can take awhile, but it beats repainting.
We're quite certain a few readers out there have some secret painting tips that can save a slightly messed up result. Please share any tips with Erich and the rest of the community below.
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