GB/T 33158-2016

This standard specifies a test method for determining the mechanical behavior of thermal insulation materials under repeated compressive loading, simulating long-term stresses like foot traffic or equipment weight on roofs and floors. It is applied in the construction industry to evaluate the durability and performance degradation of insulation boards used in flat roofs, terraces, and other load-bearing building applications. The cyclic loading test helps engineers and specifiers select products that maintain thermal performance and structural integrity over their service life.