The Mastic Doctor team standing beside their branded vans outside an office building
Greater London · England

Washroom Sealing contractors in North Brixton

Looking for washroom sealing in North Brixton? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Sealant stained black around basins and showers
  • Urinal joints that look unhygienic
  • Washrooms that look worn because of the sealant
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Need washroom sealing in North Brixton?

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Washroom sealing for commercial buildings in North Brixton

In a busy washroom, the sealant normally gives up long before the tiles or fittings. Basin tops, urinal backs, panel joints and shower trays put it under water, chemicals and daily cleaning, and once mould grows into it, it can’t be scrubbed out. The fix is to remove it completely and reseal with sanitary silicone containing anti-mould additives. We work on vanity units and basins, kitchens and tea points and IPS panels and cubicles, and what we’re called in for most is stained sealant around pans and urinals and users noticing mouldy joints. Facilities teams, main contractors and managing agents in North Brixton tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

Restaurants, cafés and hotel kitchens across London have joints at worktops, sinks and wall cladding that need to stay smooth and cleanable. Hygienic and anti-mould sanitary sealants are used where they suit, with food-safe products where food contact is possible.

The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
North Brixton (SW9, SW8, SE5)
Region
Greater London
Guarantee
12 months on every job
Quote
Quoted before any work starts
Phone
01277 525 020
Updated
3 November 2026

Why it’s worth doing now in North Brixton

A failed joint behind a basin or along a shower tray lets water run where it shouldn’t. In a commercial building that can mean damaged boards, stained ceilings on the floor below and odours, and fixing that takes far more work than resealing. In a London building, a failed joint rarely affects only one party: water travels through shared structures, and a small leak becomes a dispute between occupiers. Dealing with it early is simpler for everyone.

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

Why clients in North Brixton choose us

  • Colours chosen to suit frames, cladding or finishes where possible
  • Coloured sealants to suit the setting, where available
  • One phone line for London, the South East and Scotland
  • Fully insured, including public liability cover

Read how commercial sealant jobs are priced or our accreditations and insurance.

Common questions from North Brixton clients

Do you work in London buildings with loading restrictions?

Yes, most London buildings have access rules of some kind, and we plan around them. The building manager’s rules go straight into our method. All of Greater London is inside the ULEZ, and our planning allows for it

Can you work around term dates at a campus such as King's College London?

Yes, holiday working periods are the norm on campus jobs. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Will all the toilets be closed at once?

We phase it so there are always facilities open. One washroom, one bank of cubicles or one changing room is done at a time around your site hours and access windows.

What’s the quickest route to a quote?

It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photographs and a postcode.

Is colour matching possible?

It depends on the product. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.

Is old silicone taken out first?

The failed bead is always removed. New silicone won’t stick to the old, so sealing over it soon peels.

Can you clean the mould off instead of resealing?

Typically not. The mould is inside the silicone so cleaning only lightens it for a while. Replacement is the lasting fix.

For managing agents and facilities managers

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. North Brixton can form part of a wider programme across Greater London.

Wet areas in North Brixton’s workplaces

North Brixton has plenty of hotels close by, all within 2 miles. Each has en suites, back-of-house toilets and kitchens with sealant that moulds and splits. The work can go floor by floor, agreed with housekeeping. In London buildings, toilets and showers generally need to stay partly open, so we take one block of facilities out of use at a time.

At a college such as William Booth College, which lies south-east of North Brixton, washroom and kitchen sealant is best renewed in the holidays or in phases during term. Halls of residence and teaching buildings at universities such as King's College London, 0.9 miles east of North Brixton, are easiest to reseal during vacations. Clinical washrooms at sites like Lambeth Hospital (0.7 miles south-west of North Brixton) are scheduled with the ward so the room is out of use for as little time as possible.

North Brixton is about 2 miles south-west of London, in Greater London. Businesses, contractors and managing agents in North Brixton can call on us for washrooms and wet areas, as part of our coverage of Greater London. 764 places across Greater London fall within our area, including North Brixton.

Commercial sites across SW9, SW8 and SE5 are covered for washrooms and wet areas. Buildings on Lett Road, Lorn Road and Oak Square are within our area. Being close to the A203, North Brixton is easy to get to with materials and equipment. We also cover Angell Town (1 mile south), Little Portugal (1 mile west), Stockwell (1 mile south-west), South Lambeth (1 mile north-west) and Kennington (1 mile north-west). Further afield, our area takes in City of Westminster (3 miles north-west), Marylebone (3 miles north-west), Kensington (4 miles north-west), St Pancras (4 miles north), Shoreditch (4 miles north-east) and Walthamstow (9 miles north-east).

Landmarks near North Brixton

Around North Brixton, our work takes us to commercial buildings near The Crown & Anchor pub, Lambeth Palace Library and Durand Academy. You will also find Max Roach Park (0.5 miles south) and Platanos College (under half a mile west). North Brixton’s nearest station is Loughborough Junction station, roughly 0.7 miles south-east. Other landmarks nearby include Type Museum (less than half a mile west) and St Giles' Hospital (1.3 miles east). For a walk, there’s Battersea Park Lake and Knight's Hill.

Map of North Brixton © OpenStreetMap contributors

Different surfaces, different methods

Urinals and WC pans

Floor joints around WC pans are often forgotten. They are checked with everything else.

Healthcare and care settings

Healthcare work is phased so wards, clinics or residents’ areas keep their facilities. Records you need can be confirmed with the quote.

Should maintenance staff do it?

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.

Maintenance after handover

Keep the joints in good shape with a few simple steps:

  • Report faulty extraction promptly
  • Tell us about infection-control or permit rules before we quote
  • Note failing joints building by building
  • Avoid scourers and harsh descalers on silicone

We hand each area back once the silicone has had the cure time the product needs. You’ll be told when showers and basins can be used again and signage stays in place until that time.

Mould in a joint spreads along the bead and into nearby grout and users notice. Dealing with it while it’s just the sealant keeps it simple.

On site: what to expect

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. Once we’re cleared to begin, we take the joints in the sequence agreed with you. In North Brixton, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.

  1. We agree which washrooms close and when.
  2. Leaks, loose panels or damp are pointed out first.
  3. Old sealant is stripped and the faces prepared.
  4. We reseal with the grade suited to each area.
  5. We give you a reopening time for every room.

Before we start on site

  • Explain the parking and delivery arrangements
  • Tell us which areas need to stay in use
  • Share the asbestos register for older buildings

Request a quote

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, ring 01277 525 020 or email the details over.

Ask for a quote

Read more

Accreditations

Trusted. Accredited. Insured.