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Edison Restoration Products have been in use in Historic and commercial stone, concrete and masonry restoration for 33  years. Over 4000 custom repair mortar formulations have been developed over that period of time, including sandstone, brownstone, terra cotta, limestone, marble, granite, brick, stucco, historic concretes and others. Edison Coatings has also developed and manufactures a complete series of accesssory products, including terra cotta glazes, breathable coatings, sealants, adhesives and weatherproofing/ consolidating treatments. Picture

While most restoration craftsmen find working with Edison products straightforward and intuitive, there is much to be gained from the experience of working with the products in a "hands-on" training course led by a skilled and experienced instructor. Special techniques and guidelines for their use have been developed as a result of years of on -the-job field experience, and these will be shared with course attendees. Case studies and visual aids will also be used extensively to illustrate problem solving, materials selection and potential pitfalls. Emphasis will be on skills and techniques used for exterior applications on vertical and horizontal masonry. Attendees will be encouraged to participate in "hands-on" exercises, designed to provide an introduction to the working "feel" of these materials.

Course Instructors

John Harry, Restoration Consultant, worked as a restoration contractor for over 20 years before becoming a masonry restoration consultant for commercial and institutional clients. John's unique combination of practical experience, and an understanding of building components, materials and technology provide a unique, balanced viewpoint. His focus is on "Practical Building Restoration"

Michael Edison, Chemical Engineer and President of Edison Coatings, Inc., will explain the basic principles of how custom repair materials work, and the technical guidelines for their selection and application. He has authored a number of articles and papers on repair materials, and has been a frequent lecturer on the subject at professional association meetings and conferences. Mr. Edison earned his degree in Chemical Engineering from Polytechnic University (NY) and an MBA from the University of New Haven. He has been involved in product development, technical services and project engineering for over 40 years, including the past 34 years since founding Edison Coatings.

Visit the Workshop Registration Site for Additional Details


Improvements to Freeze-Thaw, Salt-Scaling and Water Resistances of Masonry Mortar (1 HR)

This presentation reviews the 9-year testing and development program initiated by Edison Coatings in 2013 to understand and overcome mortar performance problems in challenging exposures. Various additives, treatments and mortar proportioning strategies were explored for both historic and contemporary mortars, leading to development of an optimized additive that controls air content and hydrophobicity. In addition to improving resistance to water, freeze-thaw and salts, it simplifies the repointing process, assuring more reliable results.

Terra Cotta & Stone Repair (1 HR)

This seminar illustrates and explores the significance of each of the various materials properties for stone and masonry repair materials. Through examples and case studies, participants are provided with a framework for project decision-making with regard to required performance and viable options for material selection. Approaches to large-scale repair, replication of complex glaze finishes, and the special issues revolving around wet terra cotta buildings are also detailed.

Mortar 101: Basic Things You Should Know About Masonry Mortar But Were Confused, Misled or Maybe Just Afraid To Ask (1 HR)

This program reviews the basic components, principals and standards applying to both modern and historic masonry mortars. Included are the basic chemistry of various types of limes and cements, aggregate selection criteria, proportioning guidelines for modern and historic mortars, applicable ASTM Standards, approaches to color control and issues in mortar analysis.

The Natural Cement Revival (1 HR)


This seminar is offered to qualified architectural, engineering and consulting firms involved in masonry and concrete restoration. The seminar reviews the basics of color science, explores the need for objective color measurement and communication in restoration work, and examines the various systems which have been used for cataloguing and communicating color information. Issues of color matching, color tolerance, color retention and the practical limitations in controlling color in "real world" applications are discussed. Methods for optimizing long term color compatibility are presented and illustrated. Strategies and new techniques for obtaining good color matches are also discussed.


Edison Coatings, Inc. Products are manufactured in the USA from US and foreign components.
E-NHL 2, E-NHL 3.5 White and E-NHL 5.0 are Products of France.
E-NHL 3.5 Buff and Ruregold are Products of Italy. Marfil is a Product of Spain.

 3 Northwest Drive, Plainville, CT 06062 USA

Phone: (860) 747-2220 or (800) 341-6621

FAX: (860) 747-2280 or (866) 658-1189

E-Mail: Contact Us


Last Updated:

Monday, March 25, 2024

Society for the Preservation of Historic Cements, Inc.


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. All product sales are further governed by the Edison Coatings, Inc. CONDITIONS OF SALE. Privacy Policy.

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