TimberHP Produces TimberBoard 

TimberHP reports its TimberBoard line is now rolling at its Madison, Maine facility, producing the first wood fiber continuous insulation of its kind made and sold in the U.S.

Because there’s no precedent for a product like TimberBoard in North America, the company says it is entering a rigorous testing and certification phase with the International Code Council (ICC). Earlier this year, ICC published the acceptance criteria that will guide this process, setting the stage for TimberBoard’s full market entry.

The first product in the line is a 4 ft. x 8 ft. square-edge sheet, available in multiple thicknesses. Though untreated, its density offers inherent flame resistance, earning it a Class B rating under ASTM E84.

Made from renewable wood residuals, TimberBoard is a carbon-storing insulation that helps turn buildings into long-term carbon sinks. It delivers the durability and compressive strength of rigid foam or mineral wool while remaining vapor-open, allowing assemblies to manage moisture safely and naturally.

TimberBoard highlights includes thicknesses ranging from 1 in. to 9.25 in.; vapor-open continuous exterior insulation with high compressive strength; price competitive with rigid foam and mineral wool; carbon-storing, made from abundant wood residuals.