/ Field knowledge · IMC 806.1
“Per NFPA 211” is a code path, not a drawing.
IMC 806.1 sends metal chimneys to NFPA 211. Show type, materials, supports, clearances, penetrations, termination, and access — or expect the comment.
Do not assume standard duct or vent construction applies. Factory-built listed systems are IMC 805, a different path. Packet: 806 PDF · ES · Español.
Source: Daily Code Talk #166 · tool: chimney pathfinder.
Free sample — the four-gate existing-chimney acceptance
“Existing chimney to remain” is the most expensive four words on a renovation mechanical set. The complete acceptance section from the IMC 2024 Chapter 8 Chimneys and Vents Field Guide — all four gates, the survey discipline, the escalation trigger, and the record it produces — is available as a free PDF. No email required. Download the sample (PDF). The full edition is available in the Field Guides catalog.
If the chimney is metal and the note is the entire spec
Send the routing through floors and roof, and any existing photos. MasterBuild will say whether this is 805, 806, or a vent/connector instead.
Send Project Background+1 (786) 398-6940 · osmany.portal@masterbuildconsulting.com
MasterBuild provides engineering services under a written scope. Nothing on this page is project-specific engineering advice, a code interpretation for your project, or a representation about permit approval.