What percentage of gaps in insulation would indicate a "fair" condition?

A "fair" condition regarding gaps in insulation is indicated by over 2.5%. This percentage suggests that while the insulation is not in ideal condition, it is still functional and may provide some level of thermal resistance. An indication of over 2.5% means there are potentially significant areas where heat loss can occur, impacting the overall energy efficiency of the building. In a "fair" condition, it’s understood that remediation may be needed, but the insulation hasn’t completely failed.

Insulation with gaps greater than this threshold would suggest that further evaluation and improvement are necessary for better energy performance, leading to more efficient heating and cooling costs. This percentage provides a useful benchmark for building analysts when assessing the condition of insulation in energy audits.