Double Vanity Plumbing Layout
Planning a bathroom renovation or new construction? A well-designed double vanity plumbing layout ensures smooth water flow, proper drainage, and accessible maintenance for dual-vanity setups. This drawing simplifies the process with a clear look at hot and cold water supply lines, p-traps, and drain connections.
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Bathroom Vanity Plumbing Diagram for Contractors and DIY Remodels
This bathroom plumbing diagram for a double vanity setup helps homeowners, plumbers, and builders visualize the correct routing of water lines and drainage systems. Whether you're remodeling a shared bathroom or installing a new master suite vanity, this drawing serves as a reliable reference for both functionality and compliance with standard plumbing practices.
What to consider with double-vanity plumbing layouts
Proper plumbing in a double vanity setup prevents:
- Uneven hot/cold water pressure
- Drain clogs due to shared improper slope
- Access issues during maintenance
- Cross-contamination from poorly placed vents or traps
A well-laid-out plumbing design also helps reduce the chance of leaks or water damage and makes inspections easier.
Overview
ArcSite shows how you can use the on-site drawing tools to quickly map out layouts like this:
- Hot (red) and cold (blue) water supply lines branching off to each sink
- A centralized drain pipe configuration serving both sinks
- Properly placed p-trap and cleanout access
- Equalized line routing to maintain consistent water pressure and temperature
- Vanity cutouts and faucet placements for context
This configuration ensures balanced flow and efficient drainage for two users without interfering with cabinetry or structural framing.
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FAQs
While similar, kitchen layouts often include garbage disposals and dishwashers. This drawing is better suited to bathroom vanities.
No. As shown here, both sinks share a single drain line and p-trap to simplify installation, which is common in bathrooms.
Typically, 1/2” PEX or copper for supply lines, and 1-1/2” to 2” PVC or ABS for drainage.
