TimberHP Is Finally Rolling Out its TimberBoard Continuous Wood Fiber Insulation – GreenBuildingAdvisor

By Justin R. Wolf | November 11, 2025

Last March, TimberHP, the sole U.S. producer of wood fiber insulation products, voluntarily filed for Chapter 11 bankruptcy, in what was described as a “pre-negotiated” plan to reorganize the company and shore up the necessary capital to roll out its third and final product line. Leading up to this, beginning in 2022, the Maine-based company had been steadily producing and promoting its first two products to much fanfare. The first was TimberFill, a line of loose fill insulation for wall cavities, attics, ceilings, and floors, applied using standard blowing machines. The second was TimberBatt, a semi-rigid, high-density press-fit batt product that hit markets in 2024. The imminent arrival of TimberBoard, however, the company’s line of rigid continuous exterior insulation, always seemed to get pushed back, one quarter and one year after the next.

On a recent Zoom call with TimberHP CEO Matthew O’Malia, I mentioned to him how those repeated delays never struck me as especially odd, considering the complex logistics of their operation. But when news of their bankruptcy filing came to bear, the bigger picture became less opaque. “It was unfortunate that we ended up restructuring through the Chapter 11 process,” he told me. “But for the company itself, it was a great opportunity to provide us a foundation to be successful; it gave us a much lower ongoing capital requirement to grow the company.”

Responding to concerns

O’Malia attributes the need for restructuring to “cost overruns and delays,” as well as lagging sales of its fill and batt products. When we dug into that last point, he admitted that concerns from customers and installers over product performance, sizing, and ease of installation had become too numerous to ignore.

In a GBA Q&A from last March (incidentally, initiated one day after TimberHP’s Chapter 11 announcement), several readers remarked…