Laid off from Owens Corning.

What Owens Corning layoffs have meant for employees

The Doors closings in Owens Corning's filings belong to a single program. Its second-quarter 10-Q says that after buying Masonite, the company set out to realize the synergies it expected by closing locations and consolidating production, and it attaches cost estimates to the closings, such as about $12 million in cash charges at Prineville and about $6 million at Walkerton. In that filing, the company said it was continuing to review those synergies and expected more costs from them through 2026. A spokesperson's statement to KLCC called the Prineville closing a strategic business decision. If you work at a former Masonite plant, that program is the company's own account of why these plants are closing, and its quarterly and annual filings are where it has tallied the closings so far.

The letters Owens Corning filed for Prineville and Walkerton handle the exit the same way. The Prineville notice and the Walkerton letter each call the closing permanent and note that no union is associated with the site. Each keeps some employees on after the first separations to wind the plant down, so a wind-down assignment can mean a later separation date, and each says its dates rest on the best information the company had at the time. If you get a written notice of your own date, it's worth saving it along with any update that follows.

Those dates can move. Owens Corning revised the Prineville notice three times, and Revision #3, which cited evolving business needs including wrapping up production, went to Prineville's mayor as well as Oregon's rapid response coordinator. The first notice had told the state it would hear about any change in plans or timing as soon as possible, and the later letters were how it heard. If you're timing a move or another job around a separation date, it's worth checking the state's WARN posting for a later revision before you commit.

Two plants outside the Doors business show the other shapes these cuts have taken. At the Nephi, Utah insulation plant, the 2025 cut came as a furlough, the Salt Lake Tribune reported, with the company keeping a group of employees for the plant's needs and expecting the curtailment to run through the end of that year. Its notice to the mayor aimed at a restart but said the company couldn't guarantee the furloughed workers' jobs would come back, so if you were furloughed there, weighing other work in the meantime is a reasonable call. The city was also working to bring in the Utah Department of Workforce Services' rapid response team, and the company was coordinating with factories elsewhere that might hire furloughed workers temporarily, the city's economic director said. Wabash ended differently in 2023, when Owens Corning decided to relocate that plant's mineral wool operations to Joplin, Missouri, as its 2025 10-K recounts. The work was headed to Joplin, and the plant's closing letter gave the people doing it no right to follow.

Notices for these plants have gone out under more than one company name. Kirkwood's plant came to Owens Corning with the 2024 Masonite purchase, News 34 noted, and its notice was filed by Masonite as Owens Corning Doors, so our WARN tracker is worth searching under Masonite, Endura Products and Premdor as well as Owens Corning, since older notices filed by businesses Owens Corning owns today carry those names. The recent notices went to four states, and Indiana unemployment benefits, Oregon unemployment benefits, New York unemployment benefits and Utah unemployment benefits cover each of them.

A sourced history of Owens Corning layoffs

• August 2026, Kirkwood, New York plant closing notice

  Masonite, filing as Owens Corning Doors, gave New York notice on August 25 covering 46 jobs in Broome County, our WARN tracker shows. Its Kirkwood plant, News 34 reported, was set to close for good on November 23.

• July 2026, Walkerton, Indiana plant closing

  Owens Corning set about 130 separations at its Walkerton plant from September 19 through October 2, with a wind-down group laid off by October 29, its July 21 letter to Indiana said, calling the closing permanent with no bumping rights.

• First quarter 2026, corporate operating-expense cuts

  Actions to cut operating expenses are expected to bring about $58 million in charges, primarily severance and other exit costs, with $30 million of severance booked in the first half, Owens Corning's second-quarter 10-Q shows.

• Second half 2025, Greenville and Mesquite, Texas closings

  Owens Corning announced closings of its Greenville, Texas plant in the third quarter and its Mesquite plant in the fourth, estimating cash charges of about $7 million and $2 million in its 2025 10-K.

• September 2025, Nephi, Utah insulation plant furloughs

  Owens Corning would furlough 67 workers at its Nephi insulation plant from October 27, the Salt Lake Tribune reported, telling the mayor it couldn't promise their return but aimed to restart production by the third quarter of 2026.

• June 2025, Prineville, Oregon plant closing

  Owens Corning planned to close its Prineville plant and lay off all 184 employees from August 25, KLCC reported from a June 24 notice to Oregon, and a November revision later moved the final layoffs to December 31.

• 2023, Wabash, Indiana mineral wool plant closing

  Owens Corning decided in April to move its Wabash mineral wool work to Joplin, Missouri, its 2025 10-K recounts, and an August letter to Indiana said all roles there would be permanently eliminated around October 31, without bumping or transfer rights.

What to do if you're laid off from Owens Corning

• File for unemployment in the state where you worked. Benefits run from your filing date, and severance usually doesn't block you. Owens Corning's biggest hubs: Indiana, New York, Oregon, Utah. Somewhere else? Every state is here.
• Apply for financial and hardship assistance. Unemployment supplements income, but food benefits, health coverage and utility help are often available as well. Here's some of what Owens Corning's hub states run: Indiana, New York, Oregon, Utah, and every other state is here.
• Mind the health insurance window. Losing coverage opens a 60-day special enrollment period, and an ACA plan usually beats unsubsidized COBRA. Compare your options before the employer coverage lapses, and read how the COBRA clocks run if you are weighing it seriously.
• Get your real runway number. Severance plus savings divided by reality. The calculator takes five minutes.
• Know which clocks are already running. Severance review windows, COBRA election, visa grace periods, and 401(k) rollovers all run on federal deadlines that started at termination. All five deadlines are here.