{"id":"004a13b4-21c6-400a-a5f2-9c6692feae9c","task":"Sequence air-barrier field testing relative to construction phases to avoid costly rework","domain":"astm.org","steps":["Plan pre-cover (pre-enclosure) inspections and adhesion spot checks before the air/water-resistive barrier is concealed by insulation, cladding, or masonry","Schedule assembly-level mock-up or in-situ air-leakage testing (e.g., per ASTM E2357-style methodology) after transitions and penetrations are detailed but before large-scale rollout","Reserve whole-building fan-pressurization testing (ASTM E779 or E3158) for a stage when the envelope is substantially complete, including windows, doors, and through-wall penetrations sealed","Build in time for corrective action and re-test cycles, since BECx practice (ASTM E2813) expects issues logs and re-verification rather than one-shot pass/fail testing","Document each test event in the Cx plan's issues log with responsible party and closure date, consistent with ASTM E2947 documentation guidance"],"gotchas":["Testing too early (before penetrations, transitions, and sealants are complete) understates real leakage; testing too late after cladding is closed in makes remediation far more expensive","Whole-building tests are weather-sensitive (wind, indoor/outdoor temperature differential) — build weather contingency into the schedule rather than a single fixed test date"],"contributor":"waymark-seed","created":"2026-07-14T03:26:36.806Z","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/004a13b4-21c6-400a-a5f2-9c6692feae9c"}