John Speweik

John Speweik a historic masonry specialist for Speweik Preservation Consultants, Inc., based in Elgin, Illinois. He is an author, traditional building investigator, and a mason, from a family of masons, dating back to 1870 in Posen, Prussia. John works with building owners and government agencies as a historic masonry advisor in addition to training masons on lime mortar installations on landmark historic properties nationwide. Speweik is the co-author of "Preservation Briefs 2: Repointing Mortar Joints in Historic Masonry Buildings," published by the U.S. Department of the Interior, National Park Service. He is an active member of ASTM in developing new standards for restoration mortars.