Per-stage verification — HOLD POINTs must pass before the next trade covers the work
| Stage | Verify | Gate |
|---|
| Float floor | 25mm perimeter gap continuous; no rigid bridge to slab/wall; Sylomer not touching walls | HOLD POINT |
| Walls (decoupled) | RSIC clips on grid, no bypass screws; leaves decoupled; STC ≥ target | HOLD POINT |
| Green Glue | compound BETWEEN the two boards (not on framing/edges); ~2 tubes/sheet; W3/4/5/7 only | |
| W6 / window | 150mm decoupled studs; OW-1 flush; glazier STC-50 cert on file | HOLD POINT |
| Ceiling | isolated hangers; 50mm plenum; access panel gasketed + off VO mic | |
| Doors | magnetic gasket continuous (paper-drag); drop seal full-width; light test passes | HOLD POINT |
| Treatment | bass traps in corners; Editing panels installed (RT60 fails without); cleats/brackets per spec | |
| HVAC | flex connectors both ends; IDU on isolators; isolated hangers; NC measured before ceiling seal | HOLD POINT |
| Electrical/LV | single star ground; steel conduit+boxes putty-padded; snake/XLR/Cat6/HDMI pulled before closure | |
| Commissioning | RT60 (Sabine+Eyring) + NC at design airflow + field STC measured and passed | HOLD POINT |