The trademarked color of Owens-Corning fiberglass insulation is pink.
Owens-Corning began coloring its fiberglass insulation pink in 1956, when the company added red dye to its otherwise pale material. The color helped distinguish Owens-Corning insulation from competing products and quickly became strongly associated with the brand. Although company executives initially worried that pink might discourage a male-dominated construction market, customers noticed and liked the distinctive appearance.
Owens-Corning briefly removed the dye, but customer requests led the company to restore the color. The association became so valuable that Owens-Corning eventually protected the insulation color as a trademark in 1987. This was a landmark example of color functioning as a brand identifier rather than merely as decoration.
The Pink Panther strengthened the connection. Owens-Corning licensed the cartoon character as a product mascot in 1979, making the pink insulation easy to recognize in advertising and hardware stores. The color does not mean the fiberglass is a different basic material; it is primarily a signature of the manufacturer’s product line.