Preservation Guidance: Exteriors

A property's exterior envelope provides protection from the elements, and to a large extent conveys a structure's historic character. The age, style and significance of a structure can often be easily understood by analyzing exterior design, materials and features.

Exterior changes in taste, fashion, architectural style and use may also be evident. In any preservation project, it is critical that the exterior be treated carefully. The information describes typical preservation treatments and approaches for the repair and maintenance of a building's exterior.