Chimney 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
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14807 Arabian Lane
Bowie, Maryland 20715
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License: MHIC #122750