Corhart Refractories, a manufacturer of refactories – large ceramic blocks used to line glass and steel furnaces – is acquired by Saint-Gobain.

Norton Company acquires a U.S. supplier of high-quality abrasives and surface finishing products, Carborundum Abrasives (having acquired its Canadian subsidiary the year before).

Norton Company opens Saint-Gobain Research North America in Northboro, Massachusetts – now Saint-Gobain's largest research center in the world.

Norton Company acquires Canada-based Carborundum Abrasives (originally called Canada Sandpapers)

Norton Company introduces its patented, groundbreaking "seeded gel" abrasives – made by dispersing tiny particles in a special gel, from which water is removed and the resulting mixture is subjected to high temperature, converting the "seeds" to highly durable and long-lasting abrasive materials.

CertainTeed introduces "InsulSafe®," the world's first non-bonded loose fill fiber glass insulation product.

CertainTeed opens its Technical Center in Blue Bell, Pennsylvania.

Saint-Gobain obtains 57 percent of CertainTeed stock and a controlling interest in the company.

CertainTeed's plant in Lake Charles, Louisiana, begins manufacturing polymer products which the company uses as raw materials to make pipe, siding and window products.

The CertainTeed/Saint-Gobain joint venture is folded into CertainTeed. In return, Saint-Gobain receives a large number of shares of CertainTeed stock.