1103.03 MATERIAL AND THICKNESS.
   The required degree of insulation ("R" value) shall be achieved by:
 
R-4
3/4"   Styrofoam or its equivalent
R-7
2"   Styrofoam or its equivalent
R-11
3-1/2"    Fiberglass or its equivalent
R-18
2"    Urethane or its equivalent
R-19
6"    Fiberglass or its equivalent
 
(Ord. 1182AC. Passed 3-15-76.)