â€œStandard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of Hot Box Apparatusâ€.
The ASTM C1363-05 test measures the steady state thermal performance of building assemblies and materials at conditions typical to normal building applications.
Tests can be conducted at simulated exterior temperatures ranging from -54Â°F (-48Â°C) to 185Â°F (85Â°C), with a typical residential interior temperature of 70Â°F (21Â°C).
The test allows the thermal performance of the building assembly to be evaluated under installed temperature conditions typical to the various climate zones that exist through out the world.
Since wall assemblies are tested, the effects of thermal bridging using real world framing factors and common installation deficiencies (e.g. improper stud spacing) are also included. The test also makes provision to evaluate the effects of forced or natural convection on the faces of the system assembly.
However, the test protocol does not allow the evaluation of moisture and air infiltration, which may have a major impact on thermal performance under installed conditions.
Tests such as the ASTM C1363-05 begin to address the issues that affect the installed performance of an insulation product. To be representative of field conditions, test assemblies are required to duplicate field construction in respects to framing geometry, material composition, installation practice, and orientation.
For a more detailed description of the test scope, visit the ASTM web site by clicking on this link;