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When the best demand the best.

Featured Projects

Washington National Airport

Ronald Reagan Washington National Airport, Washington, DC

 

Trained masons in proper repair techniques for concrete restoration, performed inspections of each repair, demonstrated procedures for duplication of original finish and form marks. Through training and inspections, provided 10 year material and labor warranty.

Team Members

  • Alphonso Narvaez – Principal Architectural Conservator, John Milner Associates
  • Lane Burritt – Sr. Architectural Conservator, John Milner Associates
  • C.A. Lindman Companies – Masonry contractor
Ross Hall, George Washington University

Ross Hall, George Washington University, Washington, DC

 

Performed on-site training and supervision of installers of JAHN Restoration Mortar Systems, including duplication of original form marks.

Team Members

  • Hoffman Architects
Ellis Island

Ellis Island, New York, NY

 

Installed JAHN Restoration Mortar Repairs to the Indiana Limestone facade. Supplied company personnel to assist local masons for over 3 months to expedite the repairs.

Team Members

  • National Park Service
Empire State Building

Empire State Building, Manhattan, NY

 

Supplied training and JAHN Restoration Mortars for limestone repairs to the facade, working from swing stages with A. Best Co.

Team Members

  • Lev Zetlin & Associates/Thornton Tomasetti
The White House

The White House, Washington, DC

 

Removed deteriorated Alabama limestone coping, fabricated replacement stone, installed new cornice and parapet pieces. Supplied and installed new radiused limestone steps at rear porch. Performed JAHN masonry repairs & pointing to front porch, entry walls, rear terrace.

Team Members

  • National Park Service
Smithsonian Castle

Smithsonian Castle, Washington, DC

 

Fabricated Renwick Gateposts at south entrance. Designed by Renwick for 1895 construction of the castle, but never fabricated, we were hired to obtain salvaged stone from the original quarry and hand-cut four large gateposts. They are visible at the south entrance.

Team Members

  • Constantine Seferlis, Supervisor
Smithsonian Arts & Industries Building

Smithsonian Arts & Industries Building, Washington, DC

 

Refinished sandstone window sills and four entry features in place as part of a total restoration. The work included stone repairs and resurfacing of all facings.

U.S. Capitol Building

U. S. Capitol, Washington, DC

 

Mortar repairs to stairways in the dome. Stone supply for new paving in dome floors. Training of Capitol masons in mortar repairs. Training of Capitol masons in stonecutting at Cathedral Stone Plant.

Injection Grout Masonry Restoration Projects

  • Federal Reserve Manhattan, NY
  • Governor's Mansion Saint Paul, MN
  • Illinois State Capitol Springfield, IL
  • Jefferson's Poplar Forest Lynchburg, VA
  • Lincoln Memorial Washington, DC
  • Minnesota State Capitol Saint Paul, MN
  • Mission San Juan Capistrano San Juan Capistrano, CA
  • Missouri State Capitol Jefferson City, MO
  • Morgan Guaranty Building New York, NY
  • New York State Capitol Manhattan, NY
  • Park Synagogue New York, NY
  • Philadelphia City Hall Philadelphia, PA
  • Saint Phillips Church Charleston, SC
  • The Presidio San Francisco, CA
  • United StatesNaval Academy Annapolis, MD
  • Washington Monument Washington, DC
  • Washington National Cathedral Washington, DC
  • West Virginia Independence Hall Charleston, WV
  • Yale University, Davies Mansion New Haven, CT

Exterior Stucco and Interior Plaster Masonry Restoration Projects

  • Harper's Ferry Harper's Ferry, WV
  • Midland County Courthouse Midland, MI
  • Owens Thomas House Savannah, GA

Limestone, Sandstone, Brownstone and Precast Concrete Masonry Restoration Projects

  • Arlington Street Church Boston, MA
  • Bank of Montreal Montreal, QC, Canada
  • Bell Canada Building Montreal, QC, Canada
  • Biltmore Estate Asheville, NC
  • Butler County Courthouse Fairfield, OH
  • Cambridge City Hall Annex Cambridge, MA
  • Chesapeake Bay Bridge Building Norfolk, VA
  • Cleveland Convention Center Cleveland, OH
  • Columbia University, Columbia Law School Building New York, NY
  • Duke University Durham, NC
  • Ellis Island Immigration Building Jersey City, NJ
  • The Empire State Building New York, NY
  • Exxon Building New York, NY
  • Grand Central Terminal New York, NY
  • Golden Gate Park San Francisco, CA
  • Hancock County Courthouse Findlay, OH
  • Harvard Club of New York New York, NY
  • Harvard University Cambridge, MA
    • Divinity Hall
    • Harvard Hall
    • Siever Hall
  • Hippodrome Theatre Baltimore, MD
  • Houston City Hall Houston, TX
  • Illinois Supreme Court Building Springfield, IL
  • Indiana University, Commons Building Bloomington, IN
  • Iowa State University, Friely Hall Des Moines, IA
  • Iowa State University, Memorial Union Building Ames, IA
  • Iwo Jima Memorial Quantico, VA
  • Jewish Museum New York, NY
  • John Hopkins Baltimore, MD
  • Kentucky Governor's Mansion Frankfort, KY
  • Latino Cultural Center New York, NY
  • Louisiana State Capitol Building Baton Rouge, LA
  • Loyola University, Loyola Sky Building Chicago, IL
  • Metro Dade Government Center Miami, FL
  • MIT Dome Repair Cambridge, MA
  • Montana State Capitol Building Helena, MT
  • National Gallery of Art Washington, DC
  • New York City Hall Manhattan, NY
  • Old State Capitol Building Olympia, WA
  • Oregon State University, Memorial Union Building Corvalis, OR
  • The Pentagon Arlington, VA
  • Pacific Union Club San Francisco, CA
  • Philadelphia City Hall Philadelphia, PA
  • Pittsburgh International Airport, Midfield Terminal Pittsburgh, PA
  • Plaza Hotel New York, NY
  • Princeton University Princeton, NJ
  • Radio City Music Hall New York, NY
  • RCA Building(GE Building) New York, NY
  • Smithsonian Institution, Arts & Industries Building Washington, DC
  • Stanford University, Stanford Language Building Palo Alto, CA
  • United States Holocaust Museum Washington, DC
  • University of Kansas, Hoch Auditorium Lawrence, KS
  • Statue of Liberty New York, NY
    • Administration Building
    • Concession Building
  • University of Notre Dame South Bend, IN
    • Administration Building
    • Architecture Building
    • Moreau Hall
  • University of Missouri Columbia, MO
  • University of Rochester Rochester, NY
  • University of Tennessee, Animal Science Building Knoxville, TN
  • University of Wisconsin Lathrop, WI
  • U.S. Department of Agriculture, Buildings # 1 and 2 Washington, DC
  • Waldorf-Astoria Hotel New York, NY
  • Watts Tower Los Angeles, CA
  • Washington National Cathedral Washington, DC
  • West Point, U.S. Military Academy, Cadet Chapel West Point, NY
  • West Virginia Independence Hall Charleston, WV
  • Wyoming State Capitol Building Cheyenne, WY
  • Yale University New Haven, CT
    • Art & Architecture Building
    • Bingham Hall
    • Sterling Library
  • The White House Washington, DC
  • United States Naval Academy Annapolis, MD
  • Wrigley Building Chicago, IL
  • Wyoming Territorial Prison Laramie, WY

Masonry Cleaning & Stripping Projects

  • University of Maryland Baltimore County
    • Albin O. Kuhn Library
     Baltimore, MD
  • Vancouver City Hall Vancouver, Canada
  • World Trade Center Baltimore, MD
  • Bethesda Naval Hospital Bethesda, MD

Cathedral Stone Products, Inc.
The leader in scientific masonry restoration