Which method is commonly used to assess the effectiveness of insulation?

The method commonly used to assess the effectiveness of insulation is thermal imaging. This technique involves using an infrared camera to detect temperature differences on surfaces, which indicates areas of heat loss or gain due to insufficient insulation. When thermal imaging is performed, it can visually reveal thermal anomalies in a building envelope, helping technicians pinpoint insulation deficiencies that might not be visible to the naked eye.

This method is advantageous because it provides immediate and precise information about the thermal performance of insulation, allowing for quick identification of trouble spots that may require remedial action. In contrast to other methods, such as visual inspections, which may miss hidden issues, or pressure testing, which is more focused on air leakage, thermal imaging directly correlates to thermal performance and thus is considered one of the most effective methods for assessing insulation effectiveness.