At the NAHB Green Building Conference in Atlanta, Owens-Corning announced in March that its line of fiberglass insulation products has been certified to contains an average of 35% recycled content by leading third party certified, Scientific Certification Systems (SCS), an increase of 5% over its prior certification. SCS approved the certification of Owens Corning's signature PINK fiberglass insulation, as well as the company's commercial fiberglass products, only after a comprehensive audit of the firm's claims, visits to manufacturing facilities and interview of plant personnel. This recognition by SCS assures the building professionals using Owens Corning fibreglass insulation of the recycled content in order to achieve LEED certification and meet other green building guidelines.