Bathroom Fitting Services in London

A new bathroom is one of the most rewarding improvements you can make to your home. Done properly, it adds value, improves daily life, and gives you a space you actually enjoy being in. Done badly, it causes leaks, damp, and a bill to put things right. At Catalyst Home Services, our qualified bathroom fitters handle every stage of your installation — from stripping out the old suite to handing you a fully finished, functioning bathroom.

We work across London for homeowners, landlords, and developers. Every job is carried out to a high standard, with clear pricing and no unpleasant surprises.

Ready to get started? Book a Plumber for a no-obligation consultation or call us on +44 7400 265421.

What Does a Professional Bathroom Fitting Service Include?

Bathroom fitting covers everything from planning the layout and stripping out your existing suite, through to connecting your new fixtures and making sure everything drains, fills, and seals correctly. It is not just a plumbing job — it requires careful coordination between the water supply, waste connections, and the finished surfaces around them.

At Catalyst Home Services, our bathroom fitting service covers the full plumbing and installation scope:

  • Full strip-out and responsible disposal of the old bathroom suite
  • Bath, shower tray, and shower enclosure installation
  • Shower screen and glass panel fitting
  • Basin and vanity unit installation
  • Back-to-wall, close-coupled, and wall-hung toilet installation
  • Concealed and exposed pipework routing and connection
  • Waste pipe and trap installation
  • Hot and cold water supply connections
  • Isolation valve fitting on all appliances
  • Silicone sealing around baths, showers, and basins
  • Connection to existing drainage or new waste runs as required

If your bathroom project also involves tiling, flooring, electrics, or plastering, we are happy to work alongside your chosen contractors and coordinate our work around theirs.

Is It Time for a New Bathroom?

Not every bathroom needs a full refurbishment. But there are clear signs that a replacement is more cost-effective than continued patching:

Your suite is more than 15–20 years old. Older baths, basins, and toilets are less water-efficient, harder to keep clean, and increasingly difficult to find replacement parts for. A modern suite uses significantly less water and is easier to maintain.

You have persistent leaks or damp around fittings. Once the silicone around a bath or shower tray has failed repeatedly and the underlying surfaces have been compromised, a fresh seal is rarely a long-term solution. A proper strip-out and reinstallation resolves the problem at source.

The layout doesn’t suit how you live. Many older bathrooms were designed around conventions rather than the actual needs of the people using them. Reconfiguring the layout — moving from a bath to a walk-in shower, for instance, or creating a wet room — requires a full installation.

You’re preparing the property for sale or let. A dated bathroom is one of the first things buyers and tenants notice. A clean, modern bathroom suite makes a measurable difference to saleability and rental value, particularly in the London market.

You’ve just had a structural issue repaired. If you’ve recently had Leak Detection & Repair work carried out, a burst pipe fixed, or water damage addressed, a bathroom refit is often the natural next step to bring everything back to a proper standard.

What Our Bathroom Fitting Service Covers in Detail

Strip-out We begin by isolating the water supply and carefully removing all existing fixtures — bath, basin, toilet, and any shower enclosure. Waste pipes are disconnected, and old silicone and adhesive are removed. We take care to protect your flooring and the rest of your home during this process, and we remove and dispose of all waste materials.

Pipework and waste connections Once the room is clear, we assess the existing supply and waste pipework. If the layout of your new suite matches the old one, existing runs are often usable with minor modifications. If you’re changing the position of any fixtures, new pipe runs will be required. We route these neatly — concealed wherever possible — and install isolation valves on every appliance so you can shut off a single fixture for future maintenance without affecting the rest of the house.

If your existing pipework is old or showing signs of scale and corrosion, we may recommend partial replacement alongside your bathroom fit. You can find out more about that on our Pipe Replacement & Relining page.

Bath installation Baths are installed on adjustable feet, levelled precisely, and positioned against the wall correctly before the waste trap and overflow are connected. The bath is then sealed to the wall with sanitary silicone — applied in a single, clean bead that bonds properly and resists mould.

Shower installation Shower trays are set level and fully supported — this is critical, as an unsupported shower tray flexes under load and eventually cracks the seal or the tray itself. Shower enclosures and screens are fitted square and plumb, with all glass properly secured. The thermostatic or mixer valve and riser rail are positioned correctly for comfortable use, and flow-tested before sign-off.

Basin and vanity unit Basins are fitted to manufacturer specifications — wall-hung basins are secured with the correct fixings for your wall type, and vanity units are levelled and anchored. All waste traps and connections are checked for leaks before completion.

Toilet installation We install all toilet types — close-coupled, back-to-wall, and wall-hung. Wall-hung toilets require a frame and cistern system to be correctly fixed to structural wall fixings; this is done properly or not at all. We connect the soil pipe carefully and test the flush and fill mechanism before finishing. For individual toilet replacements outside a full bathroom refit, see our Toilet Repair & Replacement page.

Hot water supply If your new bathroom will place greater demand on your hot water system — particularly if you’re adding a power shower or moving from a bath to a large shower enclosure — it’s worth reviewing your water heater capacity at the same time. Our Water Heater Installation team can advise and carry out any upgrade needed alongside your bathroom fit.

Final checks and sign-off Before we consider the job complete, we run every fixture. Taps are flow-tested, showers are run for temperature balance and flow rate, toilets are flushed, waste pipes are checked for leaks, and every silicone joint is inspected. You’ll be shown around the completed bathroom before we leave, and we’ll answer any questions about using or maintaining your new suite.

How Our Bathroom Fitting Process Works

Step 1 — Initial consultation We discuss your plans — what you want to achieve, the layout of your existing bathroom, and your budget. For larger projects, we recommend a site visit so we can assess the space and the existing plumbing before putting together a quote.

Step 2 — Written quote You receive a detailed, itemised written quote covering labour, any materials we’re supplying, and the scope of work. Nothing is added to this without your agreement.

Step 3 — Planning and scheduling We agree a start date and talk through the programme. For a standard full bathroom fit, we’ll give you a realistic timeline — typically three to five working days depending on complexity. We’ll confirm any required access and discuss how we’ll protect the rest of your home.

Step 4 — Strip-out Day one is usually strip-out day. The old suite comes out, waste is removed, and the room is assessed properly now that everything is clear. If anything unexpected comes to light — hidden water damage, pipework in worse condition than expected — we tell you immediately and discuss before proceeding.

Step 5 — First fix plumbing Pipe runs are laid in, waste connections are made, and everything is tested before the room is closed up for tiling or boarding.

Step 6 — Second fix and fitting Once the room is tiled or boarded (whether by us or your tiler), we return to fit and connect all the fixtures — bath, shower, basin, toilet, taps, and valves.

Step 7 — Test, seal, and sign-off Every fixture is tested in use. Silicone joints are finished. You’re walked through the completed bathroom and given any documentation you need for warranty or insurance purposes.

Bathroom Fitting for Homeowners, Landlords, and Developers

Homeowners Whether you’re refreshing a tired bathroom or designing your dream space, we deliver the plumbing and installation element to the standard your project deserves. We’re experienced in working with homeowners who are managing their own refurbishments and coordinating multiple contractors.

Private Landlords A well-fitted, functional bathroom is one of the most important features of a rental property — for tenant satisfaction and for minimising maintenance calls. We work quickly to minimise void periods and can provide documentation suitable for your records. Our Residential AMC gives ongoing cover for your refurbished bathroom once the work is complete.

Property Developers We handle bathroom installations across multiple units, working to programme deadlines and coordinating alongside other trades. Our experience with New Build Plumbing means we understand build timelines and can carry out first and second fix work on schedule. Our PPM (Planned Preventive Maintenance) contract is popular with developers managing multiple properties after handover.

Commercial Clients We fit bathrooms and en-suite facilities in hotels, serviced apartments, and commercial premises. Larger-scale commercial bathroom projects are handled by our Commercial Plumbing team.

Why Proper Bathroom Installation Matters

A bathroom installation involves live water supply, pressurised pipework, concealed joints, and surfaces that are permanently sealed. The consequences of getting it wrong are not immediately visible — but they are expensive and disruptive when they do appear.

Hidden leaks cause serious damage. A slightly weeping joint behind a bath panel or under a shower tray won’t be noticed until the damage to your floor, ceiling below, or structural timbers becomes apparent. By that point, remediation costs dwarf the saving made on the original installation.

Incorrect toilet and soil pipe connections breach Building Regulations. Soil pipes must be correctly vented and connected to prevent sewer gas from entering the property. This is a health and safety matter, not just a comfort one.

Wall-hung toilets and shower enclosures need the right fixings. Fitted to inadequate fixings in unsuitable walls, these fixtures fail — sometimes dangerously. Our engineers assess wall construction before specifying fixings.

Insurance validity. If a leak from an improperly installed bathroom causes damage to a neighbouring property or to the building fabric, your insurer may question whether the work was carried out by a competent person. Our engineers are qualified and insured, and we can provide documentation. See our Licences & Certifications page.

Services That Work Alongside Bathroom Fitting

Why Choose Catalyst Home Services for Your Bathroom Fit?

We do the job right — start to finish From the first pipe run to the final silicone bead, every stage is carried out with care. We don’t cut corners on the bits you can’t see, because they’re often the bits that matter most.

Transparent pricing before work starts You’ll receive a clear, written quote and we’ll stick to it. If anything unexpected comes up during the job, we discuss it with you before proceeding. Read more on our Why Choose Us page.

Qualified, insured engineers All our bathroom fitters hold the relevant plumbing qualifications. You can review our credentials on our Licences & Certifications page.

London-wide coverage We work across all London boroughs. Check our Service Areas page to confirm we cover your postcode.

Trusted by London homeowners and landlords Our Reviews & Testimonials reflect years of completed bathroom installations — see what our customers say about the standard of our work.

If anything goes wrong after installation We stand behind our workmanship. And if a plumbing emergency ever arises, our Emergency Plumbing team is available 24 hours a day via the Emergency Line (24/7).

FAQs

How long does a full bathroom installation take? A standard full bathroom fit — strip-out, first fix plumbing, and second fix with a new suite — typically takes between three and five working days for a single bathroom. This doesn’t include tiling time if you have a separate tiler. More complex projects, such as wet rooms or bathrooms requiring significant rerouting of pipework, take longer. We’ll give you a realistic programme as part of your quote.

Do I need to supply the fixtures, or can you source them? We’re flexible. You can supply everything, we can supply everything, or we can work together — for example, you choose the sanitary ware you like and we source the pipework, valves, and fittings. Either way, we’ll ensure what’s being installed is appropriate for the space and the water system.

Do I need planning permission for a new bathroom? In almost all cases, no — replacing or refitting a bathroom in its existing location does not require planning permission. If you’re converting a bedroom into a bathroom, or adding a bathroom to a property, Building Regulations may apply. Our engineers can advise at the survey stage.

Can you work around my tiler? Yes. Bathroom fitting naturally splits into first fix (pipework before tiling) and second fix (fitting fixtures after tiling). We’re experienced in phased programmes and coordinating with other trades. Just let us know your tiler’s schedule when we’re planning the job.

What if you find a problem once the old suite is stripped out? This does sometimes happen — hidden moisture damage to the subfloor, pipework in worse condition than expected, or walls that need reinforcing for wall-hung fixtures. We will always tell you immediately, explain what we’ve found, and give you options before proceeding. We never carry out additional work without your agreement.

Can you fit a wet room instead of a traditional bathroom? Yes. Wet room installation involves tanking the floor and walls before the shower area is tiled, along with a linear or central drain. Our team is experienced in wet room installations. These are particularly popular in smaller London bathrooms where a separate shower enclosure would feel cramped, and in accessible bathrooms for older residents or those with mobility needs.

Will a new bathroom add value to my London property? Generally, yes — particularly if the existing bathroom is dated or poorly maintained. In the London market, a clean, modern bathroom suite is consistently cited by estate agents as one of the best-value improvements before a sale or let. The extent of the uplift depends on the rest of the property, the quality of the fixtures chosen, and the standard of the finish.

How do I maintain my new bathroom properly? The most important thing is to reseal silicone joints promptly if they show any sign of cracking or lifting — a small amount of moisture getting behind a seal is the most common cause of longer-term bathroom problems. We’ll walk you through everything before we leave. For peace of mind on the plumbing side, our Residential AMC includes periodic plumbing checks that cover your bathroom fixtures.

Ready to Start Planning Your New Bathroom?

Whether you know exactly what you want or you’re still working out where to begin, we’re happy to help. Get in touch for a no-obligation consultation and written quote.

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