What does R-38 mean?

  • Insulation levels are specified by R-Value.
  • R-Value is a measure of insulation’s ability to resist heat traveling through it.
  • The higher the R-Value the better the thermal performance of the insulation.

Title 24 states in new construction and remodels, an R-38 mandatory minimum level of insulation applies when using the performance method of compliance.

Whole House Attic Insulation