An alkaline formula with organic solvents, removes multiple layers of oil based paint and graffiti from masonry surfaces. This ‘slow working’ extended contact remover, remains active for 24 hours. One application of Heavy Duty Paint Stripper dissolves heavy accumulations of paint, restoring old masonry to its original appearance. Heavy Duty Paint Stripper contains no methanol, methylene chloride or chlorinated solvents, and is water rinse-able and non flammable