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Bathroom refits and renovations in Merton

Bathroom renovation in Merton, London

Lian Construction carries out full bathroom renovations across London, from Kingston upon Thames out across South West London and the wider capital. We handle the whole refit as one project: strip-out, replumbing, tanking wet areas, tiling, electrics and sanitaryware, rather than leaving you to coordinate a plumber, tiler and electrician separately. Work ranges from a straightforward bathroom refresh in a Victorian terrace to a small ensuite squeezed into a box room, or a full wetroom conversion. We survey the room, agree a realistic layout for the space available, and sequence the trades properly so the finished bathroom is watertight, compliant and built to last, not just good-looking on handover day.

Merton overview

Bathroom renovation in Merton

Wimbledon's price growth is driving refurbishment demand, with only a handful of dedicated roofing contractors covering the borough. Merton falls well within the South West London ground Lian Construction covers on a regular basis. For bathroom renovation work in Merton, that local knowledge means fewer surprises once work is on site and a team that already understands the borough's typical property stock.

Merton's housing stock reflects its position as an outer London borough that developed in waves from the Victorian era through to the interwar suburban boom. Areas closer to Wimbledon tend to have larger Victorian and Edwardian villas and terraces, many built for a more prosperous commuter market, while surrounding streets carry the bay-fronted terraced housing typical of London's inner-outer ring. Further out, 1920s and 1930s semi-detached houses are common, built as London's suburbs expanded along the tram and rail lines, along with pockets of post-war infill and some purpose-built flats. This mix means roof types vary considerably across the borough, from slate and clay tile pitched roofs on older properties to felt or asphalt flat roofs on extensions and later additions. Older properties in particular tend to carry original roof coverings well past their practical lifespan, since replacement is disruptive and often deferred until problems become visible internally. For homeowners and landlords, this generally means roofs, guttering and chimney stacks on period stock are worth checking on a regular basis rather than waiting for a leak to force the issue.

Wimbledon's continued price growth is pushing more homeowners toward refurbishing rather than moving, since improving an existing property is often more cost-effective than trading up in a rising market. This tends to increase demand for structural work, extensions and roof repairs or replacements, particularly where owners are looking to protect or add value ahead of a future sale. At the same time, the borough appears to have relatively few dedicated roofing contractors compared to the level of demand, which can mean longer lead times for quotes and bookings, especially during busier periods of the year. For homeowners, this makes it worth getting roof surveys and repair quotes booked in early rather than waiting until a problem becomes urgent, since availability can be tighter than in areas with more roofing specialists to choose from. Landlords managing rental stock in and around Wimbledon face a similar pressure, needing roofing and refurbishment work completed reliably to keep properties lettable and compliant. Given the limited number of specialist contractors, homeowners and landlords alike may find it sensible to build a relationship with a contractor ahead of time rather than searching from scratch when an issue arises.

Electrics, ventilation and lighting in bathrooms

Bathrooms are a special location under BS 7671, the UK wiring regulations, and the room is divided into zones based on distance from water: zone 0 is inside the bath or shower itself, zone 1 covers the area directly above it up to 2.25 metres, zone 2 extends a further 0.6 metres beyond that, and everywhere outside those areas is treated as zone 3 or unzoned. Fittings need an ingress protection rating suited to the zone they sit in: a shower light typically needs at least IP65 if it's positioned in zone 0 or 1, and standard 13-amp socket outlets aren't permitted within the zoned area at all, other than a shaver socket to BS EN 61558-2-5, which is the reason bathrooms only ever have a dedicated shaver point rather than a normal switched socket near the basin. Mechanical extraction is a Building Regulations Part F requirement, not just good practice, and a bathroom without an openable window to outside air needs a fan ducted out, sized appropriately to the room volume, and in windowless bathrooms it typically needs a timer overrun so it keeps running for several minutes after the light switches off rather than stopping the moment you leave the room. Switch position is worth planning early in a small bathroom too. A standard light switch mounted on the wall inside the room needs to sit outside the zoned area or be a pull-cord type if it's within reach of the bath or shower, which is why older bathrooms often have a ceiling-mounted pull-cord even where a modern wall switch would otherwise be preferred. In a tight ensuite where every wall is close to the bath or shower, this sometimes limits switch position more than people expect, and it's worth confirming with the electrician at first-fix stage rather than after the wall's already been tiled. We coordinate all of this electrical work with a qualified electrician who tests and certifies it, since bathroom electrical work is notifiable under Part P of the Building Regulations, and we build the certification into the handover pack alongside the rest of the job's documentation and photographs.

Small bathrooms, ensuites and London flat layouts

A lot of London's housing stock was never built with a second bathroom in mind, so ensuite and small bathroom projects usually involve working around genuine space constraints rather than starting from a blank canvas. In Victorian terraces, a boxroom or the end of a landing is often the only realistic space for an ensuite, and getting a shower, WC and basin into 2 to 3 square metres means specifying carefully: a corner shower or a shower over a shortened bath, a wall-hung WC with a concealed cistern to save floor depth, and a slimline or countertop basin rather than a full vanity unit, all chosen to suit the actual room rather than a standard catalogue layout. Ex-council and purpose-built flats bring a different constraint: concrete floor and ceiling construction limits where new pipework and waste runs can be chased in, since cutting deep chases into a structural concrete floor slab isn't something we'd do, so waste routes sometimes need to run in a raised floor void, a boxed duct along a wall, or a false ceiling in the room below instead. Door swing is another common problem in small bathrooms that's easy to overlook on a plan, an inward-opening door can eat into the only usable floor space in the room once a shower enclosure or WC is in position, and switching to an outward-opening or sliding pocket door is often a simple change that makes a genuinely tight layout workable without extending the room itself. Ceiling height under a sloped loft conversion roof, and the position of a soil stack shared with a flat above or below, are further constraints worth checking early in a converted property. We measure and mock up tight layouts with masking tape on the floor before ordering sanitaryware, since a fitting that looks fine on a plan can turn out to clash with a door swing or a radiator once it's actually standing in the room.

Full strip-out bathroom refits and wetrooms
Tanking and waterproofing to wet areas
Zone-rated electrics and ventilation to BS 7671
Regular coverage of Merton and the wider South West London area

Signs to look for

Do you need bathroom renovation in Merton?

  • You want a walk-in shower or wetroom instead of a bath, which needs the floor built to falls rather than just retiled.
  • The bathroom floor feels uneven, spongy or has a visible dip, pointing to a joist or subfloor issue beneath the existing finish.
  • You're planning a wider refurbishment and want the bathroom sequenced alongside other rooms rather than treated as a separate later project.
  • Ventilation is poor, with condensation and mould building up on the ceiling or around the window despite an existing extractor fan.

How the work is handled in Merton

  1. Step 1Survey the bathroom and agree the layout
  2. Step 2Strip out and first-fix plumbing and electrics
  3. Step 3Tank, board and tile the wet areas
  4. Step 4Fit sanitaryware, test and snag before handover

Questions

Bathroom renovation questions in Merton

How quickly can Lian start bathroom renovation work in Merton?

Merton is part of our regular South West London coverage, so once we've surveyed the property we can usually confirm a start date quickly. Send the address and scope and we'll arrange the next step.

Do you cover all of Merton?

Yes. Merton falls within the area Lian Construction serves across Greater London.

Can you fit a wetroom instead of a standard shower enclosure?

Yes. A wetroom needs the floor built to fall towards a drain, using a tapered former or screed, with the waterproof membrane taken across the whole floor and up the walls rather than just around a tray. It's a bigger job than fitting a shower tray, since floor height and drainage need checking early, particularly on an upper floor or in a flat where floor build-up is limited, but it gives a level, step-free finish that works well for smaller rooms and for anyone wanting easier long-term accessibility.

Can you move the toilet or shower to a different part of the room?

Yes, though it depends on how the new position relates to the existing soil stack and waste run. A WC generally needs a consistent fall back to the stack, and where the new position can't achieve that with standard pipework, we'd look at options such as building up the floor slightly or fitting a macerator unit. We'll check this at survey stage and tell you honestly if a layout change is straightforward or adds meaningful cost and floor build-up before you commit to a specific design.

Do you fit underfloor heating in bathrooms?

Yes, we can supply and fit electric underfloor heating mats or cables beneath the tiled floor, coordinated with a qualified electrician for the final connection, testing and certification. It goes in after levelling and before tiling, using a flexible adhesive suited to the slight movement caused by heating cycles. It's worth deciding on underfloor heating early in the design, since it adds a stage to the floor build-up and affects the finished floor height, which can matter in a small bathroom where door clearance is already tight.

What ventilation does a bathroom legally need?

Building Regulations Part F requires mechanical extraction in any bathroom without an openable window to outside air, ducted out rather than just recirculating into the loft or a void. Even where there's a window, many bathrooms still benefit from a fan, particularly windowless ensuites and shower rooms where condensation builds up quickly. We size the fan to the room volume and, for windowless bathrooms, typically fit one with a timer overrun so it keeps running for a few minutes after the light switches off, which clears humidity properly rather than stopping the moment you leave the room.

Talk to Lian Construction about Merton

Send the site address in Merton, photos if available, and the bathroom renovation work you need. We can review the scope and arrange the next step.

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