Bidet Toilet Installation

Trade: Plumber

⭐ Introduction

A bidet toilet is an increasingly popular addition in UK homes, offering enhanced personal hygiene and comfort. It combines the functions of a traditional toilet and a bidet, typically featuring a built-in water spray system for cleaning after using the toilet. You might consider installing a bidet toilet if you are improving bathroom accessibility, addressing specific health needs, or simply upgrading your bathroom facilities.

Bidet toilets can range from simple add-on bidet seats to fully integrated toilet-bidet units. Installation usually involves plumbing and some electrical work, making it a job best handled by a qualified plumber. This ensures the fitting meets UK building regulations and is safe to use.

🔧 What the job involves

Installing a bidet toilet primarily involves connecting the unit to your existing water supply and drainage system while ensuring the electrical elements (if applicable) are correctly linked and safe. Here’s a straightforward overview:

  • Removing the existing toilet: If upgrading, your plumber will first detach your current toilet.
  • Preparing the plumbing: Adjustments may be necessary for cold water supply taps, and the waste outlet may need slight repositioning depending on the new toilet’s design.
  • Fitting the bidet toilet: The new unit is secured to the floor, ensuring a watertight seal and stable installation.
  • Connecting water supply: A flexible pipe connects to the toilet’s bidet function, controlled via knobs, a remote, or panel.
  • Electrical connection: Some bidet toilets require a mains electrical supply for heated seats, water warming, or dryers. This must comply with Part P of the Building Regulations regarding electrical safety in bathrooms.
  • Testing: The plumber will thoroughly test for leaks, electrical safety, and correct operation of the bidet features.

📝 Step-by-step from booking to completion

  1. Initial enquiry: Contact a local, Gas Safe registered plumber experienced with bathroom installations to discuss your requirements.
  2. Site survey and quote: The plumber visits your home to assess the existing bathroom setup, water supply, waste pipe accessibility, and electrical points. They will provide a written quote detailing labour, materials, and any additional costs.
  3. Scheduling the installation: Agree on a convenient date, allowing for any necessary parts ordering or additional preparatory work.
  4. Day of installation: The plumber arrives, removes the old toilet if needed, prepares plumbing and electrical connections, installs the bidet toilet, and carries out all relevant tests.
  5. Completion and handover: The plumber explains the functions and maintenance, issues any applicable certificates, and clears their work area.

💷 Main costs to expect

  • Labour: Generally between £150 and £300 for a straightforward installation.
  • Bidet toilet unit: Typically £300 to £1,200 or more, depending on features.
  • Materials and fittings: Flexible hoses, seals, mounting brackets (~£30–£80).
  • Electrical work: If needed, additional £100–£200, depending on the extent of wiring and consumer unit upgrades.
  • Disposal of old toilet: £20–£50 if not included in labour.
  • Certification: If electrical work is carried out, a Part P Electrical Installation Certificate may cost £50–£100.

📊 What affects the price

  • Access to the bathroom: Narrow stairs or tight spaces complicate the job.
  • Complexity of plumbing: Moving supply or waste pipes raises cost.
  • Electrical work requirements: Installing or upgrading sockets or RCD protection.
  • Compliance with Building Regulations: Requires certification and possibly extra work.
  • Remedial works: Damage to floor or walls uncovered during installation.
  • Location: Prices tend to be higher in London and the South East.
  • Urgency: Priority or same-day installation may incur premium charges.

⏱ How long does it take?

  • Simple replacement: 2 to 4 hours, where existing plumbing and electrical work are sufficient.
  • More complex installations: 1 day or longer if plumbing or electrical rewiring is needed, or if bathroom walls/floor require work.
  • Additional work: Further plumbing modifications or remedial decoration/tiling will extend timescales.

🏠 Can you DIY it?

While some basic bidet seats that replace toilet lids come with detailed instructions, full bidet toilet installation is generally not suitable for DIY:

  • Plumbing expertise required: Poor installation risks leaks or water damage.
  • Building regulations: Electrical work in bathrooms must comply with Part P; uncertified electrical installations can be dangerous and affect home insurance.
  • Sealing and waste connections: Incorrect fittings may cause unpleasant smells or health hazards.
  • Warranty: Many manufacturers require professional installation to maintain warranties.

It’s wise to hire a qualified plumber for full bidet toilets or units needing electrical connections.

💰 Typical UK price range

For most UK homes, expect to pay around:

  • £600 to £1,500 for a complete installation including a mid-range bidet toilet and professional labour.
  • Prices include VAT at the current rate (20% as of 2024).

Remember that costs vary depending on product choice and installation complexity.

✅ Handy tips before you start

  • Research styles: Choose a bidet toilet that fits your bathroom size and personal needs.
  • Check electrical compatibility: Confirm your bathroom has an appropriate electrical supply, or plan for upgrades.
  • Clear the installation area: Remove personal items and ensure easy access.
  • Keep paperwork: Retain all installation certificates and manufacturer warranties.
  • Ask about aftercare: Enquire about servicing options and maintenance advice.
  • Plan for water shut-off: Know where your stopcock is to isolate water supply if needed.

Taking these steps helps your installation go smoothly and ensures your new bidet toilet stays functional and safe.