Bathroom Sink Plumbing Rough In

The plumbing rough in for a bathroom sink is the initial phase of the plumbing installation process. It involves setting up the basic framework for the sink's plumbing system, including the water supply lines, drainpipe, and necessary fixtures.

Materials Required:

PEX or copper pipes for water supply lines
PVC or ABS pipe for drainpipe
Sink faucet
Sink drain
Shut-off valves
Pipe fittings (elbows, tees, etc.)

Steps:

1. Determine Sink Location:

Mark the exact location of the sink on the bathroom floor plan.

2. Install Water Supply Lines:

Run the hot and cold water supply lines from the main water supply to the sink's faucet location. Use PEX or copper pipes and secure them with pipe hangers or straps.

3. Install Drainpipe:

Connect the PVC or ABS drainpipe to the sink drain. The drainpipe should slope downward at a 1/4-inch per foot gradient to ensure proper drainage.

4. Connect Faucet and Drain:

Install the sink faucet onto the water supply lines and connect the drain to the drainpipe. Use flexible hoses or connectors for both connections.

5. Install Shut-Off Valves:

Install shut-off valves on both the hot and cold water supply lines near the sink. This will allow you to easily turn off the water supply for maintenance or repairs.

6. Cap Openings:

Cap any open ends or unused connections in the plumbing system using pipe caps or plugs.

7. Test the System:

Turn on the water supply and check for any leaks or issues. Inspect the connections thoroughly and make any necessary adjustments.

Additional Considerations:

When performing a bathroom sink plumbing rough in, consider the following additional factors:

Sink Type: Different sink types may require specific plumbing configurations.
Faucet Type: The type of faucet (single-handle, double-handle, etc.) will affect the number of water supply lines required.
Drain Size: The diameter of the drainpipe should match the size of the sink drain.
Code Compliance: Ensure that the plumbing rough in complies with local plumbing codes and regulations.