Rough Plumbing Inspection Checklist
(Redirected from Rough-In Plumbing Inspection)
Status of Completion
- Connection to water and sewer is made for the rough-in plumbing phase. 
- To test water lines - pressurize through the washer box -  - gauge on one line, air pressure on other.
- Short overview, doesn't say much but gets you into the inspector mood - 
- Relatively comprehensive video, with tub-shower pre-plumbed so none of its drain detail is shown:
- Or, see how inefficient it gets for a larger house - 6000 sf of concrete after rough plumbing - 150 yards - like 18 trucks/ Shows stressing of foundation cables . Including copper pipe water service.
- Waste and water pressure testing - plugging all holes - showing different plugs , .
- The washing machine box - trim cover at end is adjusted to thickness of sheathing 
- Good one which shows what the inspector actually does - but this is not rough plumbing - just house plumbing inspection for home valuation purposes - 
- DWV - 5 psi air or water. See that valve holds. 0.1 psi graded valve.
- How do you stop the bath tub overflow? Drain should close, but overflow
- Each trap protected by vent within allowed distance
- See cleanout requirements.
- Ford Fitting for water supply line if supply line connection is inside the house.
- 125 Water pressure test required
- Vacuum breakers on hose outlets
- Supply water line fill is inspected prior to covering
- Approved grounding system for water supply line?
- Tracer wire for water supply from meter to foundation
- Toilet clearance 15" from sides and 12" from back
- Nail plates for vent pipe - if you have sheathing above vents.
- Tape for joints in vents must be UL 181 listed. 
- Exterior wall water lines must be freeze protected. 
- Max 32" between PEX line supports. . Attach so that water hammer does not end up making noise.
- Backflow preventer from street sewer.
- Tubs are level - so you simplify the trim work necessary around it 
- Toilet 12.5" from framing, or 12 from wall. 
- Caulk around toilet and bath?
- Functional water flow test - 
- 2 parts vinegar + 1 part baking soda as alt to Drano 
- If tub is preinstalled, how to close overflow? The over flow I capped off by making a plate to screw on and used a piece of mouse pad as a gasket. 
- If tub is on second floor, its overflow can be the high water mark, so there is no need to close it. This would not apply if testing with air.
- For rough-in, the easiest approach to tub in our case (it doesn't fit through doors, so must be pre-located. Pre-located does not mean it has to be pre-plumbed. So leave the drain kit off - just make sure it is possible to install it _after_ the trap is installed.
- Assumes that trap doesn't have to be in for rough plumbing - just rough drain for tub. 
- Water Heater - Since it is a fixture  - a water heater is installed in the finish phase 
- Water heater is often installed at rough plumbing phase