I'm restoring a grand old stone-house built in 1915. Over the years many layers of paint have been applied to the cast cement base plates for the porch support columns and the very large cast window sills and headers. Of all the various methods I've attempted using DoradoStrip and a 3000 PSI power washer is far and away the best method. The DoradoStrip softens the many layers of paint and the power washer takes it all off.