Chimney Sweep Crown

Building Code Requirements

  • Edge of crown must be min 2 inches thick

  • Crown oberhangs chimney by min 2 inches

  • Crown slopes min 10 degrees downward from flue

  • Drip slot placed underneath overhand at 1.5 in

  • Crown separated from flue with bond break

  • Bond break sealed with non-combustible sealant.

  • Reinforced with 1/2 inch galvanized mesh

Code references: IRC R1003.9 & ASTM 1283 8.1-5