FM testing is among the most difficultand demanding standards of our industry.Approval
Approval Standard 4880
Norex-S, Norex-H and Norex-L panels – FM Approvals Standard 4880 (2005) Wall-Ceiling/Roof Constructions) are Approved for interior use. The 4880 standard verifies the properties related to the combustibility of the product by conducting a series of tests.
Approval Standard 4881
Norex-H and Norex-L panels – FM Approved exterior wall systems. The 4881 standard verifies the limits of the fastening system under various wind load conditions and girt spacing. The FM laboratory is able to accurately create the desired wind load conditions. This standard also includes a hail test.