28 | Focus on North America: TimberBoard
TIMBERHP LAUNCHES TIMBER BOARD
TimberBoard is now rolling off the line in Madison, Maine, the first wood fibre continuous insulation of its kind made and sold in the US
orth America’s first wood fibre insulation manufacturer TimberHP has been in the news a lot so far in 2025. It originally started production of loose-fill
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wood fibre insulation in 2023 – becoming the first US company to do so at the time. A team of like-minded entrepreneurs revitalised a shuttered paper mill in Madison, Maine, to build the landmark plant. It had taken years to reach the stage. Flexible batts followed, and finally a third product has come off the production line – rigid wood fibre insulation board. It’s been a long journey for the US$125m
project, which was originally announced back in 2015, and the company recently came out of Chapter 11 proceedings, securing new investment to kick off the next stage in its development and secure the next phase in its operations.
Much of the production equipment at Madison was originally sourced from the European wood fibre board producer Homanit in Berga, Germany and shipped to the US. The equipment had originally been installed by Dieffenbacher at the latter in 2009.
Dieffenbacher supported the company in financing the relocation and planning of its re-installation. Dieffenbacher has also modernised the plant and installed new equipment, including a gluing system and dryer.
TIMBERBOARD LAUNCH The latest big news was the start of production of TimberBoard on September 5 – 4ft x 8ft square-edge sheet, available in multiple thicknesses. Though untreated, its density offers inherent flame resistance,
earning a Class B rating under ASTM E84. TimberHP said the long wait for the product was worth it, with the product being another first of its kind to be made and sold in the US.
“This milestone has been years in the making, and we couldn’t be more proud to bring this high-performance, sustainable solution to the market,” it said. The rigid boards are composed of
softwood fibre, PMDI adhesive and paraffin. TimberHP is utilising the dry manufacturing process – a popular production method used in Europe.
The rigid TimberBoard product is designed as a vapour open, continuous insulation with a stable R-value, high heat capacity and high compressive strength. TimberHP says because there’s no precedent for a product like TimberBoard
Above: TimberBoard, the third wood fibre product to roll off the production line at TimberHP in Madison, Maine WBPI | October/November 2025 |
www.wbpionline.com
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