Replace a bath

Trade: Plumber

⭐ Introduction

Replacing a bath is a common home improvement or repair task that many homeowners face at some point. You might need to replace your bath because it’s damaged, stained beyond cleaning, outdated in style, or simply to upgrade to a more practical design (such as a smaller or walk-in model). Sometimes, a replacement is necessary after leaks or plumbing issues have compromised the existing bath.

Getting the job done properly is important to avoid water damage and ensure your bathroom remains safe and comfortable. This article explains what’s involved, what to expect, and helpful tips to guide you through the process.

🔧 What the job involves

Replacing a bath is more than just swapping the old for a new one. The process usually includes:

  • Removing the existing bath: This involves disconnecting the water and waste pipes, and carefully taking the bath out without damaging surrounding tiles or floor surfaces.
  • Checking the plumbing: Sometimes pipes need adjusting or replacing to fit the new bath.
  • Installing the new bath: Positioning it correctly, securing it, and connecting all plumbing — including the waste and taps.
  • Sealing and finishing: Applying waterproof sealant around the bath edges to prevent leaks, and potentially re-tiling or repainting affected areas.
  • Testing: Making sure taps, waste fittings, and the bath itself work properly without leaks.

A professional plumber will handle the connections to the water supply and waste pipe, and ensure compliance with relevant UK building standards.

📝 Step-by-step from booking to completion

  1. Initial enquiry
    Contact a reputable plumber or bathroom fitter. Provide details about your current bath and what you want to replace it with.

  2. Home survey and quote
    The tradesperson visits to assess the existing bath, plumbing access, and bathroom layout. They’ll advise on suitable replacement baths and provide a written quote.

  3. Agree and schedule
    Once you accept the quote, the work is scheduled. The timing may depend on parts availability and the tradesperson’s schedule.

  4. Day of works
    The plumber arrives, removes the old bath carefully, checks or modifies plumbing as needed, installs the new bath, seals edges, and tests everything.

  5. Final checks and clean-up
    The plumber ensures everything is working, cleans the work area, and may provide advice for aftercare or warranty information.

  6. Completion and payment
    You inspect the work, settle the invoice, and keep any paperwork or guarantees provided.

💷 Main costs to expect

  • Labour: Typically around £150–£300 per day depending on location and complexity.
  • Materials: The cost of the new bath (£100–£500 or more), sealants, pipe fittings.
  • Extras: Possible bathroom modifications (e.g. tiling repairs, pipe rerouting).
  • Disposal: Removal and disposal of the old bath and waste materials (often included, but check).
  • Certification: While bath replacement itself is not subject to Part P electrical regulations, any electrical work (such as installing an electric shower) may require certification.

Example itemisation:

  • Labour (1 day): £250
  • New acrylic bath: £250
  • Sealants and fittings: £50
  • Waste disposal: £50
  • Total: Approximately £600

📊 What affects the price

  • Bathroom access: Tight spaces, upstairs bathrooms, or difficult removals can increase labour time.
  • Bath type: Larger, bespoke, or heavy materials (cast iron) add to costs.
  • Plumbing adjustments: Need to move pipework adds to labour and parts.
  • Compliance work: Replacing associated taps, overflow, or waste to meet current standards.
  • Additional work: Repairs to tiles, walls, or flooring caused by removal/install.
  • Location: Prices vary between London, other cities, and rural areas.
  • Scheduling urgency: Short notice or weekend work usually costs more.

⏱ How long does it take?

  • Straight replacement: For a standard, same-size bath in an accessible bathroom, expect 1 day (6–8 hours).
  • Complex installation: More time is needed if pipework must be moved or the bath size/style changes, up to 2 days.
  • Additional work: Tiling or décor repairs may extend the overall project beyond the bath installation.

🏠 Can you DIY it?

While enthusiastic DIYers might feel up to removing an old bath, plumbing and sealing is more complex than it looks. Risks include leaks, water damage, and incorrect waste connection. UK water regulations and building standards also mean it’s important to get plumbing work done by a competent person.

You should hire a professional if:

  • You’re uncomfortable working with plumbing.
  • The plumbing layout must be modified.
  • Your bath replacement is part of a larger bathroom refurbishment involving electrical work.

If the existing plumbing and installation are straightforward, and you have some experience, you might undertake removal yourself, but installing and connecting the bath properly is best left to a qualified plumber.

💰 Typical UK price range

Replacing a bath typically costs between £500 and £1,200 including labour and materials, though prices outside this range are possible depending on complexity and product choice. These estimates usually include VAT at the standard 20% rate but always check invoices for VAT details.

✅ Handy tips before you start

  • Choose your bath carefully: Measure your space accurately and consider functionality and style. A professional fitter can advise on best options.
  • Prepare your bathroom: Clear the area to allow good access and protect flooring.
  • Check water supply: Turn off the water at the mains before starting removal to prevent flooding.
  • Keep all paperwork: Save invoices, guarantees, and any certificates provided for future reference or warranty claims.
  • Aftercare: Allow sealants to cure fully before using the bath, usually 24–48 hours.
  • Insurance: Confirm your home insurance covers bathroom plumbing work or accidental damage during installation.

By planning carefully and using qualified professionals, your bath replacement can be a smooth and successful project for your home.