Norman, Oklahoma Roofing Codes

Norman, OK follows the 2015 IBC codes and 2015 IRC codes

Items that the City Requires are below.
Max number of layers: 1 IRC R907.3 due to it being "moderate to servere hail exposure according to Figure R903.5"
reroof with shakes: Yes
Ice and water required: No R905.2.7.1
Rake or Eave metal required:
Rolled roofing allowed: Yes, down to 1/12 pitch IRC R905.5.2
Felt: double layer required between 2/12 and 4/12 IRC R905.2.2
Cricket required for chimney 30" and over: IRC R903.2.2
Roof deckā€”Must be solidly sheathed IRC R905.2.1
Flashing R905.2.8.4 (that flashing against a vertical front wall, soil stack, vent pipe and chimney is needed) Side wall needed (R905.2.8.3) Reuse of flashing IRC R907.5
Valley liner required R905.2.8.2
Manufactures instructions required IRC R904.1

Link to IRC for Norman, OK (Click Here)
Showing Norman follows 2015 code (Click Here)

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