Rosendale Natural Cement


	Welcome to the home of Rosendale Natural Cement Products^®, “The Cement That Built America” News, events, history, resources and product information for authentic, historic Rosendale Natural Cement Products^®.

American Historic Cement Conference
March 31 -April 1, 2011
New York City

The Society for the Preservation of Historic Cements, Inc., in conjunction with the US Dept. of the Interior - National Park Service - Historic Preservation Training Center and the Association for Preservation Technology Northeast Chapter presented the American Historic Cements Conference on March 31 and April 1, 2011 in New York City.

As historic cement buildings and structures continue to age, the unique challenges related to historic cement identification, preservation and sympathetic restoration have often been overlooked. The purpose of this conference was to enlarge our knowledge of the various cements used in the period from 1850-1920

A more complete program description may be found at the conference web site at www.HistoricCements.org. Several papers presented at the conference are in prepublication review for the APT Bulletin.

“The American Natural Cement Revival”
by Michael P. Edison

This is the electronic reprint of the original article that appeared in the January 2006 issue of ASTM Standardization News. It is reproduced, here, with permission from ASTM International.

Owls Head Lighthouse
1852

The American Lighthouse Foundation has completed restoration of the Owls Head Lighthouse in Maine. Rosendale 12M mortar was used, replicating original materials of construction.

Link to full story on the ALF web site.

Link to Pemaquid Light Phase 2 story


	AUTHENTICITY Rosendale 12M Mortar Used for Restoration of the American Museum of Natural History; Project Wins Preservation Award Custom color-matched Rosendale 12M natural cement masonry mortar has been used for repointing of the historic south range of the American Museum of Natural History in New York. Mortar analyses of the 1892 landmark facade confirmed historic documentation of the use of natural cement in the building’s original construction. The reintroduction in 2004 of authentic Rosendale Natural Cement Products® created an opportunity to maintain this unique architectural treasure’s historic integrity. Contractor: Nicholson & Galloway, Glen Head, NY Architect: WJE Associates, Inc., New York, NY Authentic Historic Mortars *Did you know that we routinely prepare custom authentic mortars of all types for repointing and rebuilding of historic masonry and stone buildings and structures?* More information *Why Use Rosendale Natural Cement* Products^®? New Technical Note explains Authenticity, Compatibility, Sustainability and Economic issues favoring repair/rebuilding in kind with natural cement. ASTM Issues Revised Standard C10 ASTM C10, Standard Specification for Natural Cement, reinstated in 2006, and updated and republished in 2007 and 2009, has again been updated in 2010. The new C10/C10M-10 version of one of ASTM’s oldest standards was modified to include performance requirements for quick-setting natural cement. The standard is available online at www.astm.org. The standard connects contemporary natural cement to its historic roots. Conservators, engineers and architects specifying “natural cement meeting the requirements of ASTM C10”, can be assured they will get the authentic, traditional material used in thousands of 19th Century buildings and structures, and that it will meet the same structural performance requirements it was designed to meet over a century ago. *Edison Coatings Rosendale 10C Natural Cement* and Quick-Setting Natural Cement meet the requirements of ASTM C10/10M-10. ASTM STP 1494 - Natural Cement A valuable book is available from ASTM. Entitled “STP 1494 Natural Cement”, including: 10 original papers presented at the First and Second American Natural Cement Conferences Copies of the reinstated 2006 ASTM C10 Standard Specification for Natural Cement and the original 1904 standard Reprinted excerpts of rare historical materials,** including Young (1817) on canal construction materials, Totten (1838) on tests of lime and natural cement for use in fortifications, Vose (1857) on masonry materials for railroad construction and Cummings (1898) on buildings and structures built using natural cement. The volume may be ordered from ASTM International online at stp1494.htm

		*Fort Jefferson, Dry Tortugas National Park* Photo 1 (left) was taken during 2004 test applications at Fort Jefferson, 70 miles off Key West in the Gulf of Mexico. Rosendale natural cement was used in the original construction of the fort, over 150 years ago. In 2005, work continued using of Rosendale Natural Cement Products® under the first major restoration phase, and Phase 3 began in late 2008. Photo 2 (below) was taken in 2010 of work completed in Phase 3 (courtesy of the National Park Service). Natural cement has proven superior to lime-based and portland cement-based restoration products in these demanding exposures. Rosendale Natural Cement Products®^{were also used at Fort Sumter, Fort Moultrie and Fort Pulaski.} At Fort Jefferson, much of the 150 year-old Rosendale cement mortar remains in excellent condition, in spite of the severe ocean exposure and over 100 years of neglect. Although its circumference is a quarter mile and there is a total lack of expansion joints, the structure shows no signs of thermal expansion related cracking or stress.

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Rosendale Natural Cement Products^®
is a registered trademark of Edison Coatings, Inc.

Rosendale Natural Cement Products^® are manufactured in the United States of America from 100% American Natural Cement. This is authentic historic material, extracted from historic sources, as originally used in construction of thousands of American and Canadian buildings and structures in the 19th and 20th Centuries. Rosendale 10C Natural Cement and Quick Setting Natural Cement conform to the requirements of ASTM C10/10M-10.

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Edison Coatings, Inc. makes no warranties, express or implied, as to the accuracy or completeness of any of the information contained herein. This publication is offered on a complimentary basis as a service to potential customers or specifiers. While every effort has been made to include complete and accurate information, based on data and information believed to be reliable, it is the sole responsibility of the user to determine its suitability for his own intended use and purposes. Nothing contained herein shall be construed as a warranty or guarantee of any product, process or any other recommendation stated herein. Edison Coatings, Inc. assumes no responsibility for advice given, results obtained, or for any damages whether incidental or consequential, which may be incurred as a direct or indirect result of the use of this information. By proceeding to use this information, user acknowledges and agrees that he is doing so at his own risk, and user indemnifies and holds Edison Coatings harmless against any liabilities, costs or expenses resulting therefrom. Product data and formulations are subject to change without prior notice. All product sales are further governed by the Edison Coatings, Inc. CONDITIONS OF SALE.