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Installing a Bidet Under a Raised Seat (Can It Be Done?)

By Raised Toilet Seat Staff

The idea sounds simple: raise the seat, clean with a bidet, enjoy the best of both worlds.
The reality? 🤨 A lot of plastic-on-plastic chaos if you’re not careful.

Here’s the honest breakdown on whether and how you can install a bidet under a raised toilet seat.

🚫 The Compatibility Problem

Most bidet attachments are designed to be sandwiched between your toilet bowl and the existing seat.

But most raised toilet seats:

  • Replace the entire seat
  • Sit on top of the bowl
  • Use completely different mounting hardware
  • Don’t play nice with layered plastic

Translation: stacking a riser over a bidet plate is a wobbly mess.

✅ Bidet-Compatible Riser Types (Yes, They Exist)

Some bolt-on risers now offer open mounting holes to accommodate a bidet plate.

Look for:

  • “Bidet-compatible riser” in the product title
  • Extra-long mounting slots
  • No plastic base in the bolt zone
  • Universal bolt pattern

Popular options:

  • Vaunn Medical Bolt-On Riser
  • Carex elongated bidet-compatible models (check specs) See on Amazon

🛠️ How to Make It Work

Here’s what works if you’re DIY-hungry:

Option 1: Bolt-On Riser + Bidet Plate + Long Bolts

  • Place bidet plate on bowl
  • Place riser on top
  • Use extra-long bolts to go through all layers
  • Tighten carefully (don’t strip plastic!)

May require nylon spacers or rubber washers to stabilize.

Option 2: Use a Toilet Seat Elevator Instead

  • Elevator goes under original seat
  • Original seat mounts over bidet
  • ✅ Clean install
  • ✅ No extra height wobble
  • ⚠️ Only raises 2 inches typically

⚠️ What Doesn’t Work (Don’t Try It)

  • Clamp-on risers: not compatible at all
  • Frames with built-in seats: can’t stack with bidets
  • Risers without bolt slots: no way to secure bidet plate
  • Adhesive risers + bidet = a slip-n-slide horror movie

💡 Final Flush

You can use a bidet with a raised seat, but you need:

  • The right kind of riser
  • Long mounting bolts
  • A little patience and creativity

And if all else fails?
Consider a handheld bidet sprayer and skip the seat-mount drama entirely.