In Short

Most people fit a bidet attachment themselves: seat off, attachment in between, connect to the angle valve and put the seat back on. Tools: nothing dramatic.

What We've Been Sold as Normal

“That's a job for a plumber.” So plenty of people shy away from retrofitting, even though it's barely more work than swapping a toilet seat.

The Honest Explanation

A bidet attachment goes between the ceramic and the toilet seat. You unscrew the existing seat, lay the attachment on top, then mount the seat back over it. The attachment takes its water from the angle valve that already feeds the cistern – via a T-piece in between.

Usually all you need is a screwdriver and the parts that come in the box. If the attachment fits your toilet shape, it takes half an hour. What matters is knowing your toilet's shape and hole spacing beforehand.

What You Often Hear – and What's True

“You need a plumber for this.”
Usually not. It's a seat swap plus a water connection at the angle valve.

“You have to open up the wall.”
No. Nothing structural gets changed.

“It fits on any toilet.”
Almost. Check shape and hole spacing first.

“It won't stay watertight.”
It will, if fitted correctly. Seals are included.

Putting It in Context

Retrofitting means: seat off, attachment in between, water from the angle valve. No renovation, no tradesperson needed – just the right fit.