Symposium 2000 - The Conservation of Heritage Interiors is an international conference hosted by the Canadian Conservtion Institute (in Ottawa on May 17-20, 2000) and organized in collaboration with the Association for Preservation Technology and the Heritage Conservation Program of Public Works and Government Services Canada. The symposium emphasizes the kinds of professional collaboration required to plan and execute successful conservation projects in historic interior spaces, and provides information about current examination and treatment practices, problems and solutions in project management, and the innovative use of materials in the preservation and rehabilitation of heritage interiors. This book of preprints contains the complete text of all papers presented at the conference (in the language of presentation) and includes an abstract in English and French for each. Also included are English and French abstracts for all posters and demonstrations presented at the conference.