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The Early 20th-Century Materials Tech Tip Series

Photo of a Forest Service ranger wearing a turn-or-the-20th century uniform standing by a vintage automobile.  An early-day log ranger station is in the background.Innovative building materials developed in the first half of the 20th century were commonly used in Forest Service buildings. MTDC is preparing a series of tech tips to help facilities engineers and managers recognize these materials and properly maintain, repair, and replace them. The first tech tip in the series, "Early 20th-Century Building Materials: Introduction" (0673–2314–MTDC), provides general information on historic preservation and rehabilitation standards.

The second tech tip, "Early 20th-Century Building Materials: Fiberboard and Plywood" (0773–2308–MTDC), describes the history and physical characteristics of plywood and fiberboard. It also explains common causes of deterioration, including moisture, and provides practical tips and techniques for repair.

Each of the other tech tips in this series will provide practical information about a particular group of materials. They will help you identify the materials by describing their history, physical characteristics, composition, and method of manufacture. Each tech tip also will provide guidance on maintenance, repair, and replacement, and will address common problems with specific materials. The third tech tip will examine resilient flooring. Future tech tips will look at siding, roofing, masonry, and other materials.

For additional information, contact Kathleen Snodgrass, project leader (phone: 406–329–3922; e-mail:

To order the tech tips, contact Cailen Hegman, MTDC publications (phone: 406–329–3978; e-mail:

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