ULC 706.1 PDF 2026

This Standard contains the physical property requirements, and test methods to determine these properties, for wood fibre manufactured in the form of faced or unfaced boards used for insulation in buildings and other applications, whether applied on a building site or in a prefabrication (manufacturing) facility.
The Standard covers three types of wood fibre insulation on the basis of their material properties. The products covered by this standard are classified into Types and Classes based on their physical properties.
Insulating wood fibre boards are primarily intended for use in applications where the continuous service temperature is within the range -30°C to +80°C and shall not be exposed to an open flame.
This document does not address mold growth of the material.
The testing and evaluation of a product against this Standard may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the health and safety aspects associated with its use. Anyone using this Standard has the responsibility to consult the appropriate authorities and to establish health and safety practices, in conjunction with any existing applicable regulatory requirements, prior to its use.