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388 Greenwich Street

Kohn Pederson Fox were the architects for Shearson Lehman Plaza, located at 388 Greenwich St. NYC, just a few blocks north of what was then The World Trade Center. It later became the Traveler’s Insurance Building. Now it is being transformed into the new Citigroup Headquarters and a major renovation is taking place.

The North and East facades of the 40 story skyscraper have been cleaned with D/2 Biological Solution. The building material is a fairly porous cast stone that that has attracted significant biological growth and air born pollutants. Work was staged from as many as twelve 30’ swing scaffolds.

Tishman Construction is overseeing the project. Brisk Waterproofing, a Division of Western Waterproofing was the façade cleaning contractor. Integrated Conservation Resources developed the cleaning specifications and supervised the work.  D/2 Biological Solution was supplied by AH Harris.

Tags: buildings, stone, New York City
455 Central Park West

455 Central Park West’s restoration was completed in 2005. Built by John Jacob Astor III in 1884 as the New York Cancer Hospital it lay in ruins for more than 25 years until the architectural firms of RKTB and Perkins Eastman were retained to restore and convert it into luxury housing. Jablonski Building Conservation was retained as building conservator and specified D/2 Biological Solution for removal of biological growth from the various facade stone and masonry substrates.

Tags: buildings, stone, New York City
Art Students League

The Art Students League of New York was designed by Henry Hardenbergh and completed in 1892. Other Hardenbergh designed buildings include The Dakota, Plaza Hotel and Willard Hotel. Thomas Eakins and Augustus Saint-Gaudens were founding Board Members. Many of the 20th century's most important artists have studied here including Thomas Hart Benton, Jackson Pollock, Alexander Calder, Helen Frankenthaler, Roy Lichtenstein, Maurice Sendak and Robert Rauschenberg. Joan Berkowitz specified D/2 Biological Solution for the cleaning of the limestone façade.

Tags: buildings, stone, New York City
Biltmore Estate

The Biltmore Estate is the largest private home in America. It was designed by architect Richard Morris Hunt for George Washington Vanderbilt. It took over six years to construct and was completed in 1895. Frederick Law Olmsted designed the 8,000 acres of cultivated landscape. The facades and much of the interior is Indiana Limestone. D/2 Biological Solution has been a significant part of their maintenance cycle for many years.

Tags: buildings, stone, North Carolina
Burial Hill

On the National Register of Historic Places, Burial Hill in Plymouth, MA, is one of the oldest European cemeteries in America. Many of the original Mayflower Pilgrims are buried here including the first governor, William Bradford and Church Elder, William Brewster.

The project will span four years to be completed prior to the 400th Anniversary in 2020. The work includes conservation and cleaning of more than 2,269 historic stones. D/2 Biological Solution is the specified cleaner.

Stone conservator Ivan Myjer wrote the specification. Monument Conservation Collaborative (MCC) has been engaged to complete the work. A.H. Harris is the D/2 supplier. The Friends of Burial Hill raised the funds for the project through a Plymouth Community Preservation Commission Grant

Tags: cemeteries, stone, Massachusetts
Congressional Cemetery

During its restoration of the 168 Benjamin Latrobe designed sandstone cenotaphs, the National Park Service chose D/2 to do the cleaning.

Tags: monuments, cemeteries, Washington DC, National Park Service
Coral Gables City Hall

Coral Gables City Hall was completed in 1928 by architect Phoneas Paist. It is built of local oolitic limestone in the Mediterranean Revival style consistant with the other public buildings of Coral Gables.  It is on the National Register of Historic Places. Rosa Lowinger & Associates were hired to restore and conserve the delicate limestone façade. D/2 Biological Solution was used for the cleaning that was completed in July 2015.

Tags: buildings, stone, Florida
Frank Lloyd Wright's Taliesin

Frank Lloyd Wright's Taliesin estate is a shrine to many architects. Staff there use D/2 to combat biological growth.

Tags: buildings, stone, wood, plaster, Wisconsin
Heinrich Heine Memorial

The Heinrich Heine Memorial, also known as the Lorelei Fountain was designed and fabricated in Germany for erection in Dusseldorf. It ended up on the Grand Concourse in The Bronx in NYC where it was moved several times and heavily vandalized. In 1999 the Municipal Art Society raised funds for its restoration. D/2 Biological Solution was specified for its cleaning. Joan Berkowitz was the conservator and still gives the fountain a light D/2 maintenance spraying every other year.

Tags: monuments, stone, New York City
Iowa Monument

D/2 has been used to clean thousands of monuments across the country, preserving our history for future generations.

Tags: monuments, statues, stone, Iowa

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