Any tips on how to remove paint from blockwork.The paint gets rightly into the nooks and crannys and realistically 75-80% of the paint would want to be removed followed by a god scabble. i have to plaster this wall with a napp finish when it is ready but the builder in charge of this job has his own 2 men trying to get it ready for me for the last 2 days. they have 2 small grinders and 2 rotary wire brushes but headway is extremely slow.i suggested a scabble and riblathe to him yesterday but he has only allowed 2 days for paint removal and scabble.He is now in his third day of prepping.The budget aint there for buying riblathe so he is carrying on with grinders and wirebrushes.Im just wondering are there any other ways of removing the paint.