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

Washroom Sealing in Leaves Green

Need washroom sealing in Leaves Green? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • A new bead over an old one coming away
  • Stained or open joints at kitchen sinks and worktops
  • Open joints at the base of cubicle panels
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Washroom sealing in Leaves Green

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

About our washroom sealing in Leaves Green

You can’t shut every toilet in an office, school or hotel at once. We phase the work one washroom, one bank of cubicles or one changing room at a time, so staff, guests or pupils always have somewhere to go. Give us your site hours and access windows and the phasing is planned around them. If you’re dealing with sealant stained black around basins and showers and a new bead over an old one coming away, we can help, whatever the surface. Looking for mastic applicators who cover Leaves Green? We have been sealing commercial buildings since 2005.

Many London buildings can’t close every toilet at once. Washrooms are done core by core or floor by floor, with signage and a plan agreed beforehand.

Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.

Where
Leaves Green (BR2)
Wider area
Greater London
Guarantee
12 months on our workmanship
Price
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

How the job changes by surface

Basins and vanity tops

Stone and some composite tops need a neutral-cure sealant, so the product is chosen to suit.

Changing rooms and gyms

Showers, floor edges and vanity units in changing rooms all need sound sealant, and we survey them together.

Aftercare for building managers

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

  • Include joints in routine washroom inspections
  • Clean sealant with gentle products and a soft cloth
  • Make sure washroom ventilation is running
  • Squeegee showers and trays after busy periods

Ask your cleaning team to use gentle products and soft cloths on sealant. Aggressive descalers, solvents and scouring pads shorten its life over time.

Boards behind panels and vanity tops can swell when water gets past a failed joint. Once that happens, a reseal won’t fix them.

Commercial clients in Leaves Green

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Leaves Green can form part of a wider programme across Greater London.

Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

What we’re called out for in Leaves Green

A lot of failed washroom sealant was laid over an old bead or a dirty surface. Silicone won’t adhere to a silicone bead, so it soon lets go.

These are often picked up first by site or facilities staff:

  • Sealant lifting along a tray edge
  • Sealant stained black around basins and showers
  • Users noticing mouldy joints
  • Stained sealant around pans and urinals

Where you are responsible for a hall attached to a building such as Keston Parish Church, its kitchen and toilets need sealant that stays cleanable.

What your quote should include

  • The named product and why it was chosen
  • The terms of the workmanship guarantee
  • Proof of insurance
  • Their approach to joint depth and backing

How to choose a sealant contractor

Diagnose, treat, sign off

Site rules come first: sign-in, induction and whatever permit system the building uses. Once we are cleared to begin, we take the joints in the sequence agreed with you, and each area is checked before we leave it. In Leaves Green, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.

  1. We inspect each washroom and record the joints to be resealed.
  2. You get a fixed quote with the phasing plan.
  3. The whole of the old bead is removed.
  4. Each joint is cleaned and left dry.
  5. New anti-mould sealant goes in and is tooled neat.
  6. Rooms reopen after the cure time.

Preparing the site

  • Confirm the product named in the specification
  • Tell staff and tenants when we will be in
  • Let us know about inductions and permits

Request a quote

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we will arrange a site visit if anything is unclear.

Get a quick quote

Related advice

Sanitary sealant for Leaves Green buildings

A London building with hundreds of occupants can’t lose every washroom for a day, so resealing goes floor by floor, agreed with the facilities team.

Office toilets at parks like Glebe Farm Business Park (0.8 miles north of Leaves Green) take steady weekday use, and mouldy silicone soon shows. At a hospital like Princess Royal University Hospital, 2.4 miles to the north-east of Leaves Green, patient and staff washrooms are best done in short phases agreed with the ward.

Leaves Green is about 4 miles south of Bromley, in Greater London. We cover commercial sites throughout Leaves Green, whether it’s a single job or part of a planned programme. We work across 764 places in Greater London. London is covered too, around 12 miles from Leaves Green.

Work on washrooms and wet areas is covered throughout BR2. If your site is on Ashmore Lane and Main Road or close by, send details and we will quote for washrooms and wet areas. Nearby places we also cover include Farthing Street (1 mile north-east), Downe (1 mile east), Nash (1 mile north-west), Luxted (1 mile south-east) and Keston (2 miles north) for washrooms and wet areas. A short drive away, we cover London (12 miles north-west), City of Westminster (15 miles north-west), Marylebone (15 miles north-west), Kensington (15 miles north-west), St Pancras (14 miles north-west) and Shoreditch (14 miles north).

Near you in Leaves Green

Around Leaves Green, our work takes us to commercial buildings near The Kings Arms and South Park. The nearest railway station is Hayes (Kent) station, roughly 2.8 miles north of the centre. A little further out are Bethlem Museum of the Mind (3 miles north) and Princess Royal University Hospital (2.2 miles north-east). Not far away are Nore Hill and West Kent Golf Course nature reserve.

Map of Leaves Green © OpenStreetMap contributors

Your questions answered

Can you work in a London building with booked loading and goods-lift slots?

Yes. Inductions, permits and timed loading are routine for us in London. Share the building’s contractor rules and we will work to them. We allow for the ULEZ, which covers every borough

Can work at a site such as Shaftesbury Nash College fit around teaching?

Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

Do you need to see the site first?

It depends on the job. Straightforward work can often be priced from photographs and measurements, while larger or less clear jobs get a site visit first.

Is it possible to just clean mouldy silicone?

Not for long. Mould grows into the sealant itself so cleaning only lightens it for a while. Replacement is the lasting fix.

Does the weather affect the work?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

How many days will you need on site?

We plan the time on site around your programme and access. You’ll have an expected duration with the quote.

How do we ask for 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.

General trades versus a specialist

Redoing a failed joint usually costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Accreditations

Trusted. Accredited. Insured.