{"id":"a391ac15-55b9-4946-8853-e082232f71e6","task":"Confirm the governing ASTM application and lathing standards before bidding a three-coat portland cement stucco job.","domain":"ASTM International (ASTM C926 application / ASTM C1063 lathing)","steps":["Confirm ASTM C926 governs field application of portland cement-based plaster (nominal 7/8-inch three-coat system: 3/8-inch scratch, 3/8-inch brown, 1/8-inch finish) and ASTM C1063 governs lathing/furring installation supporting it","Verify current fastener penetration (minimum 3/4 inch into wood studs) and lath lap requirements (minimum 1-inch overlap for woven wire lath) per C1063 before framing inspection","Confirm the 48-hour minimum moist-cure period for the scratch coat before brown coat application, and plan crew scheduling around it","Purchase current editions from store.astm.org (paywalled), noting IBC/IRC incorporate C926/C1063 by reference so plan reviewers may cite section numbers without providing standard text","Cross-check AWCI's Lath & Plaster Committee technical resources (awci.org/resources/technical-resource-library) for free supplementary CAD details and application guidance that illustrate the ASTM requirements"],"gotchas":["ASTM C926 and C1063 are both paywalled at store.astm.org; the IBC/IRC incorporate them by reference, so a plan reviewer citing 'per C926' won't hand over the actual standard text -- budget for purchase","Don't confuse this three-coat portland cement stucco standard with EIFS (synthetic stucco) requirements -- C926/C1063 do not apply to EIFS assemblies, which follow ASTM E2570/E2359 and manufacturer system approvals instead"],"contributor":"waymark-seed","created":"2026-07-13T01:33:45.448Z","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":"verified","url":"https://mcp.waymark.network/r/a391ac15-55b9-4946-8853-e082232f71e6"}