How long does it take to laundry room plumbing layout?

This task typically takes 1-2 days to complete, depending on your experience level and the specific conditions of your laundry room plumbing system.

What tools do I need to laundry room plumbing layout?

You'll need the following tools: PVC pipes, Fittings, Shut-off valves. Make sure all tools are in good condition before starting.

Is this task suitable for beginners?

This task is rated as Difficult difficulty. This is an advanced project best suited for experienced DIYers or professionals.

All guides

Laundry RoomAdvanced

Laundry Room Plumbing Layout

Time

480–960 min

Steps

Pre-check

4 items

Skill

Advanced

Scope

Plan and rough in laundry room plumbing: hot and cold supply lines with shutoffs, a properly vented drain standpipe, and an optional utility sink connection.

Safety

Read before starting

Obtain permits before rough-in where required. Call for utility locates before drilling or cutting. Follow local code for pipe sizing, slope, and venting. Turn off main water when tying in supply; support pipe every 4–6 ft.

Pre-Check

4 items · complete before you start

Local code and permit requirements reviewed; vent and trap rules understood
Required
Fixture locations and routes planned; washer box and standpipe placement decided
Required
Main water can be shut off; access to existing drain and vent for tie-in
Required
PVC/CPVC or PEX and fittings, shutoff valves, washer box, and support straps on hand
Required

0 / 20 complete

Plan Layout and Code Check

Plan washer and optional utility sink locations; confirm rough-in dimensions
Verify code: standpipe height (e.g. 30–48 in above trap), 2 in drain, slope ¼ in per foot, vent within required distance of trap
Plan supply: ½ in typical for washer; individual shutoffs for washer and sink
Mark routes; call for utility locates before drilling into walls or floor

Run Supply Lines

Shut off main water; tee into existing cold and hot supply (or run new lines)
Run ½ in supply to laundry; install shutoff valves and washer box (or stub-outs)
Support pipe every 4–6 ft; use appropriate hangers
If adding utility sink, run separate hot/cold to sink location with shutoffs

Install Drain and Vent

Install drain line with ¼ in per foot slope to main drain or branch
Install standpipe (e.g. 30–48 in above trap per code); use 2 in pipe; secure with straps
Install P-trap and tie standpipe to drain line; vent within code distance of trap (or tie into existing vent)
Cap stub-outs until fixtures are installed; ensure no open drain/vent during construction

Inspection and Testing

Schedule rough-in inspection if required by jurisdiction
Turn water on; test all connections for leaks
Pour water into standpipe to verify trap and drain flow
Document layout and cap heights for future fixture installation