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MADISON, Maine, Dec. 4, 2025 /PRNewswire/ — TimberHP, Inc. publicizes a significant milestone within the North American construction fabrics’ trade: TimberBoard™, the corporate’s inflexible log fiber board insulation, has formally earned ICC-ES Analysis Document ESR-5387, confirming compliance with the 2024, 2021, and 2018 Global Development Code (IBC) and Global Residential Code (IRC) for importance as nonstructural steady external insulation in Sort V-B development and IRC-governed dwellings.
TimberBoard™, now Commercially To be had National (PRNewsfoto/TimberHP)
This success completes TimberBoard’s U.S. marketplace establishing, enabling TimberHP to promote and distribute its flagship inflexible board insulation national for residential, multifamily, and business initiatives.
“The ESR certification gives TimberBoard immediate legitimacy with code officials, architects, and builders across the country,” mentioned Matthew O’Malia, Co-Founder and CEO of TimberHP. “It signals that our carbon-storing wood fiber insulation meets the same code pathways that the industry already understands, removing friction for adoption and accelerating our ability to serve the market at scale.”
ICC-ES is one in all North The us’s most useful conformity overview our bodies, and its analysis experiences grant a relied on, standardized approach for native construction officers to make sure compliance with out carrying out free engineering critiques. With ESR-5387, TimberBoard is a completely known, code-supported answer, a shift that considerably reduces boundaries for allowing, plan evaluate, and specification.
The ICC-ES document validates TimberBoard’s compliance throughout a couple of functionality sections, together with thermal resistance, density, surface-burning traits, corrosion resistance, and moisture vapor sorption, confirming its suitability as sturdy, steady external insulation. In sensible phrases, TimberBoard is produced in thicknesses from 1.5 to 4 inches and in usual 4-by-8-foot sheets, with a nominal density of 9 kilos in step with cubic understructure, thermal resistance as much as R-14 at 4 inches, and surface-burning traits of a flame-spread index of 75 or much less and a smoke-developed index of 450 or much less at 4 inches.
Those functionality values assistance long-term sturdiness at the back of a large length of claddings and align with TimberHP’s broader technical and order zone steering for compliant wall assemblies and accredited vapor retarder varieties in Circumstance Zones 3 thru 8, giving architects, specifiers, and code officers unclouded, code-aligned standards for design and esteem.
TimberBoard, with business gross sales began December 1, is the primary and handiest dry-process log fiber insulation board manufactured in North The us. Through incomes an ICC-ES analysis document, TimberBoard now stands along legacy steady insulation fabrics—permitting developers to make a choice a renewable, carbon-storing, vapor-open substitute with out navigating advanced alternative-material approvals.
About TimberHP
TimberHP manufactures high-performance, carbon-storing log fiber insulation—TimberBoard, TimberBatt, and TimberFill—at its manufacturing facility in Madison, Maine. Designed for North American codes and set up practices, TimberHP merchandise ship admirable thermal, acoustic, and moisture-management functionality for residential, multifamily, and business structures.
To be told extra or obtain ESR-5387, seek advice from www.timberhp.com/timberboard.
SOURCE TimberHP
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