Typically, manufacturers aiming for a B1 or B2 certification must subject their products to an extensive testing procedure. This involves checking the material properties in terms of their fire behavior, flammability, and ability to prevent the spread of fire.
The exact requirements and testing procedures can vary by country and applicable standards. Generally, however, manufacturers must provide evidence that their products meet the defined standards and fulfill the criteria for classification as either non-combustible or normally combustible.
After the successful completion of the tests and submission of the required documents, certification is issued for the respective materials or construction products. This certification confirms that the materials are considered non-combustible or normally combustible and comply with the prevailing fire protection standards.