Thermal Building Envelope

Requirements


The following items must be shown and/or noted on the building plan:

· The method used in achieving compliance.
  1. "R-value computation
  2. "U-factor alternative"
    ***Please note: If the "U-factor alternative" method is used, each assembly must be detailed with the summed U-factors noted.
  3.  "Total UA alternative."
    ***Please note: If the "Total UA alternative" method is used, an energy calculation showing compliance is required, reference section N1102.1.3, I.R.C.
  • · The added insulation R-value shall be properly delineated on the wall/roof/floor section details.
  • · The fenetration U-factor and solar heat gain coefficient (SHGC) noted.
  • · The skylight(s) U-factor and solar heat gain coefficient (SHGC) noted.
  • · The exterior door(s) U-factor noted.
  • · Added insulation in combination with "mass walls" shall be noted by R-value and shall include the installed location.