when was fiberglass insulation invented
Russell Slayter was the inventor of fiberglass in 1938. He was  working at Owens-Corning and invented it to be used as insulation  in the construction industry.Owens-Cornin â¦ g sold it using the name  Fiberglas.ussell Slayter was the inventor of fiberglass in 1938. He was  working at Owens-Corning and invented it to be used as insulation  in the construction industry.