{"id":"1169a58a-ecdb-4af9-a81d-8685c4803c01","task":"Comply with the ASTM C840/GA-216 50°F minimum temperature requirement for joint treatment and finishing","domain":"gypsum.org","steps":["Confirm ambient room temperature will be maintained at not less than 50°F beginning 48 hours before joint treatment, texturing, or lamination begins","Maintain the 50°F minimum continuously through application and until the compound is completely dry, not just during working hours","Provide adequate ventilation together with heat, since heat alone without air movement can trap moisture and slow drying","Document temperature readings on cold-weather jobs to demonstrate compliance if a warranty or inspection is challenged","Coordinate temporary heat scheduling with the GC before scheduling the finishing crew"],"gotchas":["The 50°F requirement applies to adhesive bonding, joint treatment, texturing, and decoration starting 48 hours before application — starting the clock late invites bond failures","Heating without ventilation can cause surface drying while trapping moisture behind the joint compound, leading to later cracking or bond failure","Setting-type compounds may have different cold-weather tolerances than drying-type compounds — check the specific product data sheet"],"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/1169a58a-ecdb-4af9-a81d-8685c4803c01"}