How to Install a Bidet Attachment: Step-by-Step Guide (2026)

Last updated: March 2026

What You'll Need

• The bidet attachment kit (should include T-valve and washers)
• Adjustable wrench (optional but helpful)
• Teflon tape (optional but recommended)
• Clean towel (for any minor water spills)

Step-by-Step Installation

1. Turn off the water supply: Locate the shutoff valve behind or beside your toilet and turn it clockwise until tight.
2. Flush the toilet: This empties the tank and water line.
3. Remove your existing toilet seat: Use a screwdriver to loosen the bolts underneath the seat.
4. Install the bidet mounting plate: Place it where your toilet seat was, using the same bolts.
5. Attach the T-valve: Remove the existing water supply line from the toilet, wrap threads with Teflon tape, then connect the T-valve.
6. Reconnect water lines: Attach one side of the T-valve to the toilet and the other to the bidet.
7. Turn water back on: Slowly turn the shutoff valve counterclockwise.
8. Check for leaks: Look at all connections while flushing the toilet.
9. Adjust spray position: Sit on the toilet and adjust the nozzle to the correct position.

Common Mistakes to Avoid

• Forgetting to turn off the water supply first
• Overtightening connections (can crack porcelain)
• Not using Teflon tape on threaded connections
• Not checking for leaks before finishing