Diedrich Technologies, Inc.

Above: Cleaning Shadyside Presbyterian Church produced dramatic results.

Left: McDonough County Courthouse after restoration cleaning with Diedrich products.
Below: The home of the Grand Ole Opry, before and after restoration cleaning with Diedrich 101-101G Masonry Restorers.

Diedrich Technologies, Inc., is the nation’s leading supplier of chemical detergent products for the restoration and maintenance of buildings, new and old. Products that encompass total market needs, historical, lead abatement, commercial, industrial, and residential. The company maintains a national toll- free phone line for personal assistance and technical information. Diedrich has been in business for over 28 years and has sales representation serving all states. Its products are shipped to over 2000 distributors nationwide, including the Sherwin-Williams paint stores. VHS training video available.

Diedrich products are listed in and accepted by the American Institute of Architects’ MASTER SPEC, Washington, D.C., in sections 04200, 04901, and 04902, brick and stone masonry cleaning. Diedrich’s products are approved by state preservation offices throughout the country and have been specified and used on over 500 buildings on the National Register of Historic Places, like:

  • Union Station and the Historic Willard Hotel, Washington, D.C.

  • Eisenhower Farm, Gettysburg, PA

  • Wilbur & Orville Wright House, Akron, OH

  • President U.S. Grant’s Home, Galena, IL

  • Orioles’ Camden Yards, Baltimore, MD

  • Frank Lloyd Wright’s Johnson Wax Building, Racine, WI

We sell products known to contractors, such as

  • 101 Masonry Restorer


  • 606/606X Paint Removers

  • 404 Rip Strip lead abatement

  • 505-505X Paint Strippers

  • 300-303-333 Series Water Repellents and Stone Consolidants

James Diedrich has written articles for, and had products and projects featured in Old House Journal, Victorian Homes, Traditional Building, and the National Brick Institute’s Brick Quarterly.

DIEDRICH’S 101 MASONRY RESTORER is a formulated carbon solubilizing cleaner that penetrates, dissolves, and suspends grime for easy removal by flushing with water. REMOVES all airborne dirt, atmospheric carbon, rust, mildew, algae, fungus, exhaust residue, industrial pollutants, weathering discoloration, fire & smoke damage, and most other stains from brick, sandstone, stucco, and metal.

NEW ENVIRESTORE 100™ is a citric-based safer restoration cleaner that will retain some character and patina and not over-clean brick & stone.


Diedrich Technologies, Inc.
7373 South 6th Street
Oak Creek, WI 53154
Tel.: (800)323-3565; FAX: (414)764-6993