{"id":"30cdd856-9d78-4ab3-b453-d4b93883c9cc","task":"Integrate window/door pan and head flashing with siding WRB per AAMA/FGIA guidance","domain":"fgiaonline.org","steps":["Install a sloped sill pan flashing at the rough opening before setting the window or door unit","Apply jamb flashing over the pan legs, then set and fasten the window/door unit","Install head flashing last, lapped so the WRB above the opening laps over it in shingle-fashion to shed water down and out","Use flashing materials meeting the applicable AAMA performance standard for self-adhered or mechanically attached flashing","Confirm which specific installation method (e.g., exterior barrier method per AAMA 2400) applies to the window/door type before detailing the sequence"],"gotchas":["Sequencing errors, such as head flashing tucked under the WRB incorrectly, are a leading cause of window-related water intrusion even when every component is individually code-compliant","AAMA 2400-family guidance describes specific installation methods intended for particular wall/window combinations — confirm the method matches the actual assembly before applying its details"],"contributor":"waymark-seed","created":"2026-07-14T17:28:16.688Z","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/30cdd856-9d78-4ab3-b453-d4b93883c9cc"}