ASTM C728-89a

C177-19e1

Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus (Includes all amendments and changes 2/23/2023).

C168-25

Standard Terminology Relating to Thermal Insulation

C203-22

Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation

C165-23

Standard Test Method for Measuring Compressive Properties of Thermal Insulations

C209-20

Standard Test Methods for Cellulosic Fiber Insulating Board

C1763-20(2025)

Standard Test Method for Water Absorption by Immersion of Thermal Insulation Materials

E84-26a

Standard Test Method for Surface Burning Characteristics of Building Materials (Includes all amendments and changes 4/15/2026).

C390-08(2024)

Standard Practice for Sampling and Acceptance of Thermal Insulation Lots

C518-21

Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus

C1289-25

Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board