In 1939 journalist Loren Pope and his wife Charlotte Pope commissioned Frank Lloyd Wright to design a new home. The design followed Wright's Usonian principles and was completed in 1941. The "Usonian" house was developed by Wright as a means of providing affordable housing for people of moderate means. Wright employed wood cladding as an affordable and easily workable material into his design. After almost a century, the wood cladding needed some help. That's where D/2 came to the rescue.
Fort Wadsworth is a former United States military installation on Staten Island in New York City, situated on The Narrows which divide New York Bay into Upper and Lower halves, a natural point for defense of the Upper Bay and Manhattan beyond. Prior to closing in 1994 it claimed to be the longest continually garrisoned military installation in the United States. D/2 was used by a National Trust HOPE Crew to clean stonework at the fort.
The Yale University School of Nursing, is the oldest university school of nursing in the world. To celebrate its 90th anniversary it dedicated its relocation to a newly renovated cast concrete building on the West Campus. Wiss, Janney, Elstner Associates specified D/2 Biological Solution for the cleaning of the cast concrete facade.
Vizcaya Museum & Gardens was built in the early 20th century in the Coconut Grove area of Miami Beach. It is a fanciful architectural mixture of various Mediterranean Renaissance styles. Coquina, a soft local sedimentary rock was used for much of its construction. In recent years it has undergone a thorough and extensive restoration.
The city walls of San Juan, Puerto Rico are a part of the San Juan World Heritage Site. The walls were begun in the 1630s with construction continuing for the next 150 years. They average 42 feet in height and are also about 42 feet thick at their base. The National Park Service began cleaning the walls with D/2 Biological Solution more than 8 years ago. The current project includes two distinct sections of the wall known as the Santa Elena and the San Augustin. Together they extend 2,600 feet.
Northwestern University Library is a prime example of Chicago Brutalist architecture. It was completed in 1970 and designed by the acclaimed architect Walter Netsch of Skidmore Owens & Merrill. The cast concrete building was cleaned in 2015 using D/2 Biological Solution.
MIT Building E52 is an Art Deco limestone building dating back to 1938. It was originally built for Lever Brothers and became the MIT Sloan School of Management in the 1950’s. Beyer Blinder Bell Architects was hired to complete the renovation and add a new addition. D/2 was specified to clean biological growth from the limestone facade.
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.
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.
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.