Are materials not referenced in the IBC allowed to be used?

In the context of building codes and the International Building Code (IBC), materials that are not explicitly referenced may still be utilized under certain conditions. The correct understanding acknowledges that, while the IBC sets forth a standard framework for materials, exceptions can be made based on the discretion of the building official. If a building official determines that a non-referenced material is sufficient for the intended use and meets the performance requirements necessary for safety and durability, they can approve the use of that material. This approach allows for flexibility and innovation in construction practices where new materials or methods may offer advantages not yet covered in established codes.

The rationale behind permitting materials not listed in the IBC, when approved by the building official, is to account for advancements in technology, unique project requirements, or geographical considerations that may not be addressed in the existing code.