Saint-Gobain sold its reinforcement and composites businesses to Owens-Corning late last year, but the Wichita Falls plant was excluded for anti-trust considerations, said Olivier Duval, the company's director of strategy.
Duval said it was "not economically feasible" to keep the 787,000-square-foot plant running as a standalone operation.
"We made the decision reluctantly," Duval said. "We did not have an alternative."
Lane said the plant's employees would get a severance package.
The Wichita Falls plant began production of fiberglass reinforcements in 1977.