The hidden plumbing pipes installed inside walls and floors before drywall is hung — the underground work that happens before fixtures are attached.
The installation of drain, waste, vent, and supply piping within the wall and floor framing before finish materials are applied, leaving stubbed-out connections at each fixture location. Rough-in dimensions specify the distance from walls and floors to fixture connection points (e.g., toilet rough-in is typically 12 inches from the finished wall to the flange center). All rough-in work is inspected before walls are closed.
The toilet rough-in measurement was 12 inches, so a standard toilet fit without requiring a special offset flange.
Get AI-powered bid alerts, automated form filling, and proposal drafting.
Start Free Trial