The table below outlines the required minimum R-values for metal buildings.


Table 2: Required minimum R-values for metal buildings with R-5 thermal blocks

Below is a table detailing the required minimum R-values for attics and other roof construction configurations.

Table 3: Required minimum R-values for attic and other roof construction configurations(excluding ventilated attics, roofs over semi-heated spaces or roofs over conditioned spaces that are not cooled spaces)

This Web exclusive information is a supplement to Conserving energy.