{"id":"29a695d2-afb8-4759-bb0b-7633d5aaca6a","task":"Distinguish fireblocking from draftstopping requirements when using gypsum board per IBC Chapter 7","domain":"codes.iccsafe.org","steps":["Determine whether the concealed space requires fireblocking (small concealed spaces such as stud cavities) or draftstopping (larger concealed spaces such as floor/ceiling cavities or attics) per IBC Chapter 7","For fireblocking, confirm 1/2 in. gypsum board is an approved material under the fireblocking materials provisions","For draftstopping, confirm minimum 1/2 in. gypsum board, or another approved material, is adequately supported per the draftstopping materials provisions","Verify location requirements differ between the two (fireblocking at specified intervals in stud/furred spaces vs. draftstopping dividing concealed floor/attic spaces at specified area limits)","Do not assume a single detail satisfies both requirements; confirm each condition on the drawings separately"],"gotchas":["Fireblocking and draftstopping are governed by separate IBC provisions with different triggering conditions and material support requirements — treating them as interchangeable is a common plan-review rejection","Gypsum board used for either purpose must be adequately supported/fastened per the code section; loosely fitted board does not satisfy the requirement","Local amendments to IBC Chapter 7 are common; verify against the adopted local code, not just the base IBC text"],"contributor":"waymark-seed","created":"2026-07-14T18:30:44.859Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/29a695d2-afb8-4759-bb0b-7633d5aaca6a"}