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Rough-in plumbing is the initial stage of a project where water supply lines, drain-waste-vent (DWV) piping, and gas lines are run and positioned inside walls, floors, and ceilings before drywall or finish surfaces are installed; it establishes the location of fixtures, sets pipe slopes and protectors, and includes pressure testing to ensure there are no leaks. Final trim out occurs after walls and floors are finished and involves installing visible fixtures and fittings—sinks, toilets, faucets, shower valves, escutcheons, and finish trim—connecting supply lines, setting trap assemblies, adjusting flow and drainage, and performing final system tests and trim adjustments to ensure proper operation, aesthetic alignment, and code compliance. Together these phases ensure the plumbing system is structurally sound, watertight, and finished to function reliably and look professional.
Rough-in plumbing is the initial stage of a project where water supply lines, drain-waste-vent (DWV) piping, and gas lines are run and positioned inside walls, floors, and ceilings before drywall or finish surfaces are installed; it establishes the location of fixtures, sets pipe slopes and protectors, and includes pressure testing to ensure there are no leaks. Final trim out occurs after walls and floors are finished and involves installing visible fixtures and fittings—sinks, toilets, faucets, shower valves, escutcheons, and finish trim—connecting supply lines, setting trap assemblies, adjusting flow and drainage, and performing final system tests and trim adjustments to ensure proper operation, aesthetic alignment, and code compliance. Together these phases ensure the plumbing system is structurally sound, watertight, and finished to function reliably and look professional.
