• The Energy Code requires roof or attic insulation. Values range from R15 to R-30 depending on the roof system type
  • Above grade exterior walls generally require R-13 insulation
  • Floors over unconditioned areas require R-19 insulation
  • Slab on grade foundation do not require insulation in the Dallas Fort Worth area.
  • Opaque doors with a glass area < 50% of the door require a U value of .70 or less
  • Window fenestration area is limited to 40% of the total wall area
    • Maximum U -Factor of .60
    • Maximum SHGC of .25 to .40 depending on the Projection Factor of any awnings over the windows.
  • Doors and windows must have minimal air leakage with values of Outdoor air intakes and exhaust opening require a Class 1 motorized or gravity damper.
  • Loading docks require a weather seal
  • Entry Vestibules are required unless the entry room is less than 3,000 square feet.
  • Recessed light fixtures installed in the area between conditioned and unconditioned air spaces require IC (Insulation Contact) Rated fixtures unless special provisions are made to limit air flow through the fixture.