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"Preserving Historic Ceramic Tile Floors" an Historic Preservation Brief December 1, 2008


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Preserving Historic Ceramic Tile Floors

Anne E. Grimmer and Kimberly A. Konrad
Preserving Historic Ceramic Tile Floors

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Introduction

The Tile-Making Process

Historical Background

        Development of the Tile Industry in America

        Changes in the Tile Industry

Ceramic Floor Tile Types

        Unglazed and Glazed Tiles

              Unglazed Tiles

                    Quarry tiles

                    Encaustic tiles

                    Ceramic mosaic tiles

              Glazed Tiles

Laying Ceramic Tile Floors

        19th Century Techniques

        20th Century Techniques

Preservation and Maintenance

        Cleaning Methods

        Protective Coatings

Damage and Deterioration Problems

        Loss of Tile Surface and Pattern

        Tile Glaze Failure

        Tile Breakage

        Moisture Damage to Tile

        Loose, Cracked, Broken or Unbonded Tile due to Mortar Failure

        Tile Damage or Loss caused by Systems Update

Repair and Replacement

        Mortar Joint Repair

        Tile Repair

        Tile Replacement

        Selective Replacement of Individual Tiles

        Sectional Replacement of Tiles

Summary

Selected Reading

Some Sources for Replacement Tiles

        Designs in Tile

        Fulper Tile

        H&R Johnson Tiles Ltd

        L'Esperance Tile Works

        Moravian Pottery and Tile Works

        Motawi Tileworks

        Native Tile and Ceramics

        Original Style

        Pewabic Pottery, Inc

        Terra Designs Tileworks

        Tile Guild

        Tile Restoration Center, Inc

Helpful Organizations

        The American Institute for Conservation of Historic and Artistic Works

        Ceramic Tile Institute of America, Inc

        Friends of Terra Cotta, Inc

        Tile Council of America

        Tile Heritage Foundation

Acknowledgements


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Historical Background

Historically, the use of ceramic floor tiles goes back to the fourth millennium B.C. in the Near and Far East. The Romans introduced tile-making in Western Europe as they occupied territories. However, that art was eventually forgotten in Europe for centuries until the 12th century when Cistercian monks developed a method of making encaustic floor tiles with inlaid patterns for cathedral and church floors. But, this skill was again lost in the 16th century following the Reformation. Except for finely decorated wall tiles made in Turkey and the Middle East, and Delft tiles made in Holland in the 17th century, ceramic floor tiles were not made again in Europe until almost the mid-19th century.

The modern tile industry was advanced by Herbert Minton in 1843 when he revived the lost art of encaustic tile-making in England. The industry was further revolutionized in the 1840s by the "dust-pressing" method which consisted of compressing nearly dry clay between two metal dies. Dust-pressing replaced tile-making by hand with wet clay, and facilitated mechanization of the tile-making industry.

19th century manufacturer's catalog
In the 19th century, Minton tiles were sold from this catalogue to American clients. Photo: NPS files.
Throughout the rest of the 19th century, dust-pressing enabled faster and cheaper production of better quality floor tiles in a greater range of colors and designs. In the 1850s encaustic tiles were selected for such important structures as the new Palace at Westminster in London, and Queen Victoria's Royal Residence on the Isle of Wight. By the latter part of the 19th century, despite the fact that encaustic tiles were still quite expensive, they had become a common flooring material in many kinds of buildings.

Development of the Tile Industry in America. Although plain, undecorated ceramic tiles were traditionally a common flooring material in many parts of the Americas, especially in Latin and South America, ceramic floor and roof tiles were probably not made in the North American Colonies until the late-16th or early-17th century. It was, however, in the Victorian era that ceramic tile flooring first became so prevalent in the United States. The production of decorative tiles in America began about 1870 and flourished until about 1930.

Like so many architectural fashions of the day, the popularity of ceramic tile floors in America was greatly influenced by the noted architect and critic, Andrew Jackson Downing. In his book The Architecture of Country Houses, published in 1850, Downing recommended encaustic floor tiles for residential use because of their practicality, especially in vestibules and entrance halls.

The 1876 Philadelphia Centennial Exposition, with its European and even a few American exhibits of decorative floor tile, was a major factor in popularizing ceramic tile floors in the U.S. Initially, most ceramic tiles-other than purely utilitarian floor tiles-were imported from England, and their relatively high cost meant that only wealthy Americans could afford them. However, when English tile companies realized the potential for profitable export, they soon established agents in major U.S. cities to handle their American business. The English near monopoly actually stimulated the growth of the U.S. tile industry in the 1870s resulting in sharply decreased English imports by 1890.


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