Masonry Cleaners: Masonry cleaners for historic buildings
The Old House Web
The formulated carbon cleaner is applied by spray, roller or soft fiber brush and removes all airborne dirt, atmospheric carbon, rust, mildew, algae, fungus, exhaust residue, industrial pollutants, weathering discoloration, fire and smokedamage. Limestone cleaners are also available.
Diedrich products are approved by state preservation officers throughout the country and have been specified and used on over 500 buildings on the National Register of Historic Places, according to the company.