How To Remove Emulsion Paint From Plaster Walls. For larger paint marks try using denatured alcohol, mineral spirits or boiled linseed oil. This softens the emulsion, making it a little puffy and easier to remove.
The block removes loose emulsion paint from plaster, leaving the underlying plaster work clear and ready to work with again.
If there are small paint drops that can be removed using warm water with a soft cloth. Paint with an undercoat, which is oil based and then let it dry. Does rain not remove the paint? If there are small paint drops that can be removed using warm water with a soft cloth.