Commercial washroom and wet-area sealing in Bromley, Greater London
Washroom sealing in Bromley, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Open joints along basins and vanity units
- Sealant laid over old silicone and now peeling
- Failed joints along IPS and cubicle panels
Need washroom sealing in Bromley?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Washroom sealing in Bromley, done properly
When mould has spotted a silicone joint, more cleaning won’t remove it. The growth is inside the sealant so it returns whatever the cleaning regime. Replacing the bead is the lasting treatment. We work on showers, trays and wet room floors, kitchens and tea points and urinals and WCs, and what we’re called in for most is failed joints along IPS and cubicle panels and shower tray joints that have opened up. Most enquiries from Bromley start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Many London buildings can’t close every toilet at once. We work through washrooms floor by floor or core by core, at times agreed with you, so staff and visitors can always find an open washroom.
We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.
- Place
- Bromley (BR2, BR1, BR6, BR5)
- Region
- Greater London
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Common questions from Bromley clients
Can you take on a job at a hospital such as Sloane Hospital?
Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.
Can you work in a care home near Bromley with residents in?
Yes. We work around residents’ routines, a room or two at a time. Any site rules, from signing in to infection control, are agreed before we start.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
How long do sealant joints last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
What guarantee comes with washroom resealing?
A 12-month guarantee covers the work. It covers our workmanship rather than damage, leaks from plumbing or ventilation problems.
How long does a typical visit take?
That varies with the scale of the job, though a typical visit usually takes between a morning and a week or so, set by the number of rooms and the phasing you need. Larger or phased jobs take longer, and we will give you a timescale with the quote.
Will cleaning remove black mould from sealant?
Not for long. Mould grows into the sealant itself so cleaning only lightens it for a while. Replacement is the lasting fix.
Washroom sealing in Bromley: the local picture
Bromley has several hotels close by, all within 2 miles. Each has en suites, back-of-house toilets and kitchens with sealant that moulds and splits. London offices and hotels usually can’t close all their washrooms at once, so we phase the work core by core or floor by floor with the building manager.
Office washrooms on sites such as Chartwell Business Centre (1 mile east of Bromley) are in use all working day, so resealing is phased to keep some open. For a campus such as University of Greenwich - Avery Hill, 4.1 miles north-east of Bromley, showers in residences and washrooms in teaching blocks can be programmed around term dates. Colleges such as Bromley College, 1.4 miles to the south-east of Bromley, have toilets, changing rooms and catering kitchens that can be resealed around term dates.
Bromley is about 8 miles south-east of London, in Greater London. We cover commercial sites throughout Bromley. Across Greater London, 764 places are covered, Bromley among them. We also cover London, around 8 miles from Bromley.
Commercial sites across BR2, BR1, BR6 and BR5 are covered for washrooms and wet areas. Streets here include High Street, Church Road and St Paul's Square. Bromley sits on or close to the A222 and A223. Close to Bromley, our area also takes in Sundridge (1 mile north-east), Plaistow (1 mile north), Bickley (1 mile east), Widmore (1 mile east) and Downham (2 miles north). Nearby towns on our patch include London (8 miles north-west), City of Westminster (11 miles north-west), Marylebone (11 miles north-west), Kensington (12 miles north-west), St Pancras (10 miles north-west) and Shoreditch (9 miles north-west).
Around Bromley
We work on buildings around Bullers Wood School for Boys, The Richmal Crompton pub and Church House Gardens, among other places. Bromley has its own railway station: Bromley South station. A little further out are The Mall (under half a mile east) and Bromley Hospital (under half a mile south-east). Open spaces near Bromley include Downham Woodland Walk and Summer Hill.
Owners, agents and contractors
If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.
Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.
Other services in Bromley
Different surfaces, different methods
Kitchens and tea points
Worktop, sink and splashback joints in tea points take water and food. Sealed joints leave no gaps for food and dirt.
Showers and trays
A tray that rocks or has cracked won’t be fixed by sealant, and we will say so before resealing.
What sets the cost
Before we quote, we look at:
- How accessible the joints are
- Removal of failed or old sealant
- Phasing around occupants
- Quantities, in metres or numbers
Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we’ll put a fixed figure on it.
Sending details for a quote
A good diagnosis starts with the right details. Tell us:
- Any specification or named product
- Whether an asbestos survey exists
- Access details, including height
- Whether the building will be occupied during the work
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to ring 01277 525 020 or email drawings and photos with what you know.
What sealant work can’t fix
A proper diagnosis includes knowing what sealant can’t do. You will hear from us if the cause turns out to be one of these:
- A room that stays damp because ventilation isn’t working
- Water from plumbing, not from a joint
- Panel boards already damaged by water
If you are not sure, just give us a call on 01277 525 020 or send photos by email and we will give you a straight answer.
Joints and surfaces we work on
- Accessible toilets and changing rooms
- Vanity units and basins
- Showers, trays and wet room floors
- Urinals and WCs
- Kitchens and tea points
- IPS panels and cubicles
From enquiry to sign-off
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.
- We agree which washrooms close and when.
- Anything behind the joints that needs another trade is flagged.
- Failed sealant and residue are stripped out.
- We reseal with the grade suited to each area.
- We give you a reopening time for every room.
What we need from you
- Send your site hours and access windows
- Let building users know which areas are affected
- Clear stock, furniture or equipment away from the joints
Quotes
For a fixed quote, give us a call on 01277 525 020 or email us. You can also send details through our quote form.
Related advice
Maintenance after handover
After handover, these steps help:
- Keep extract fans working and vents clear
- Tell us about infection-control or permit rules before we quote
- Report split joints at trays and basins early
- Photograph and log failed joints across the estate
Squeegeeing showers and trays after heavy use helps. Joints that sit wet for hours fail sooner.
A split joint at a shower tray can leak for a long time before anyone sees it. At that stage, boards or ceilings may need repair so failed joints are worth acting on quickly.