What would be the best method to get white emulsion off rough split sandstone and the mortar (cement not lime) joints? The wanted end result being visible clean stone and mortar. There is only about 1 sq metre to do, indoors.
Thinking of a steam cleaner to soften the paint but how to remove the softened paint totally from the gain of the stone? Indoors, so sloshing lots of water about isn't on.
Mechanical with a needle gun?
Any other ideas?