CertainTeed Corporation is a North American manufacturer of building materials for both commercial and residential construction and is a wholly owned subsidiary of Compagnie de Saint-Gobain SA of France. CertainTeed exports building material products worldwide. The company was established in 1904 as the General Roofing Manufacturing Company by George M. Brown in St. Louis, Missouri with $25,000 in start up capital. In 1917, the company restructured, incorporated, and changed its name to the Certain-teed Products Corporation. It began trading on the New York Stock Exchange in 1918. 1912 - General Roofing publishes its first annual report. 1913 - General Roofing began manufacturing individual asphalt shingles. 1923 - CertainTeed enters gypsum plaster business and begins manufacturing gypsum wallboard. 1923 - Company headquarters relocates from St. Louis to New York, NY. 1935 - George M. Brown resigns as President and CEO. 1938 - Celotex Corporation takes control of CertainTeed acquiring a majority of the common stock. 1942 - Company headquarters relocates from New York to Chicago, Illinois. 1944 - Rawson G. Lizars wins proxy battle and takes control of CertainTeed from Celotex. 1942 - CertainTeed is awarded a national defense contract. 1948 - Company headquarters relocates from Chicago to Ardmore, PA. 1951 - CertainTeed introduces "Fire-Stop" gypsum wallboard. 1952 - CertainTeed opens its first R&D facility in Paoli, PA. 1955 - Malcolm Meyer becomes President of CertainTeed. 1959 - CertainTeed develops the industrys first fully automatic shingle packaging machine. 1969 - CertainTeed begins producing solid vinyl siding. 1970 - Company headquarters relocates from Ardmore to Valley Forge, PA. 1973 - Saint-Gobain increases its shareholdings in CertainTeed to 32%. 1976 - CertainTeed Products Corporation changes its name to CertainTeed Corporation. 1976 - Saint-Gobain becomes majority shareholder increasing its ownership to 52%. 1979 - CertainTeed pioneers the development of vinyl windows. 1983 - Saint-Gobain increases its ownership position in CertainTeed to 57%. 1988 - CertainTeed becomes a wholly owned subsidiary of Saint-Gobain. 1998 - CertainTeed enters fiber cement siding business acquiring Roaring River, NC facility from ABT Building Products. 2004 - CertainTeed celebrates its 100th anniversary. 2008 - CertainTeed enters polyurethane spray foam in North America.