Greater London · England

Commercial & hotel sealant in Bromley, Greater London

Problem with your washrooms, bathrooms and kitchens in Bromley? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.

  • Shower leaks reaching the floor below
  • Tired sealant ahead of a health and safety audit
  • Mouldy bathrooms flagged at a tenancy check

Commercial sealant in Bromley

Commercial sealant in Bromley

Guest bathrooms are cleaned every day and used by different people every night, so sealant wears out faster than it would at home. We work through rooms in batches, so only a few are out of use at once. Common call-outs are for mouldy bathrooms flagged at a tenancy check and black, stained silicone in guest bathrooms, across hotel bathrooms, student & care accommodation and retail & leisure sites.

In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. In Bromley, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.

We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.

Where
Bromley (BR2, BR1, BR6, BR5)
Wider area
Greater London
Guarantee
12 months on all our work
Price
A clear price before work begins
Phone
0345 464 0079
Last updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

Looking after it afterwards

How long the joints last depends on use and care. Here’s what we suggest:

  • Tell cleaning staff when each room can be used
  • Act on lifting sealant before it leaks
  • Keep a record of which rooms were resealed and when
  • Keep strong chemicals and scourers off the joints

Ask staff to report splits or lifting sealant early. Catching one split early can save a leak later.

Mould in shared washrooms gets noticed and talked about. The longer it’s left, the deeper it grows into the silicone, so the fix is replacement.

What happens on the day

Every visit runs the same way: we check the joints, protect the area around them, do the work and tidy away. It normally takes a morning for a small washroom, and a planned programme for bigger sites. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Bromley. A visitor permit or a nearby bay makes the visit run more smoothly.

  1. We start with a site walk to agree the rooms and the timing.
  2. Room by room, we protect the area and remove all the old sealant.
  3. Joints are cleaned, treated for mould and dried.
  4. Anti-fungal sanitary silicone goes into wet areas, with suitable sealants elsewhere.
  5. Each room is checked and handed back with its cure time.

Getting ready for the visit

  • Mention any sign-in or site rules at work premises
  • Mention if the joints have been sealed before
  • Where the joints are inside, avoid wetting them before we arrive

Getting a quote

We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or send us an email and describe the job and send photos if you have them.

Ask for a quote

Read more

Commercial sealant around Bromley

Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange. Bromley has hotels and guest accommodation in and around it. Hotel work can be planned room by room, with out-of-hours working where needed.

For site and facilities teams at buildings such as St Mark's Church of England Primary School, busy washrooms and kitchens can be resealed in phases so they stay open. As a London address, Bromley can be tricky for parking: let us know about parking bays, permits or a driveway.

Bromley is about 8 miles south-east of London, in Greater London. Across the BR2 area, we can carry out commercial sealant at your property. Across Greater London, we cover 764 places, Bromley among them. Our London page covers work nearby.

We work across BR2, BR1, BR6 and BR5 for commercial sealant and the streets around it. If you need commercial sealant at a property on High Street, Church Road and St Paul's Square or a nearby road, our applicators can take on the job. Bromley is on the A222 and A223, so it’s easy for us to get to with everything needed for commercial sealant. Neighbouring places we cover for commercial sealant include Sundridge (1 mile north-east), Plaistow (1 mile north), Bickley (1 mile east), Widmore (1 mile east) and Downham (2 miles north). Within a short drive, we also cover 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 in homes and buildings around Bullers Wood School for Boys, The Richmal Crompton pub and Church House Gardens. Bromley has its own railway station: Bromley South station. Other landmarks nearby include The Mall (less than half a mile east) and Bromley Hospital (less than half a mile south-east). Not far away are Downham Woodland Walk and Summer Hill.

Map of Bromley © OpenStreetMap contributors

Leave it or put it right?

Room by room, the work is quick: it takes a morning for a small washroom, and a planned programme for bigger sites. Each area is then left to cure for the time we give you, so planning the order matters more than the hours on site. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.

What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear quote before work begins.

Why us?

  • A 12-month guarantee on all work
  • Arbo and Everbuild products
  • Domestic, commercial and hotel work
  • We’re fully insured

Read how sealant jobs are priced and customer reviews.

When something else is needed

New sealant can’t fix everything, and we’d rather say so up front. It will not solve:

  • A shower tray, bath or basin that is cracked or broken
  • Extraction that isn’t working, which needs an electrician or ventilation contractor
  • Water coming from plumbing rather than sealant

Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly.

Surfaces we seal

  • Hotel bathrooms
  • Retail & leisure sites
  • Welfare facilities
  • Student & care accommodation
  • Rental portfolios
  • Office washrooms & kitchens

How we quote for commercial sealant

Some jobs are bigger than they look, and some smaller. What affects the quote:

  • The product the joint needs
  • How easy the joints are to reach
  • When we can work, for business premises
  • The old material and how stubborn it is

What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.

What we need to know

What to tell us when you ask for a quote:

  • The type of property
  • What the problem is, such as mould, gaps, leaks or cracking
  • Where the job is, and your postcode
  • How we’d reach the joints

Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.

Bromley questions

Is parking a problem for a job in Bromley?

In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.

Do you take on hotel work around Bromley?

Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.

Should I try DIY first?

That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.

Do I have to be there?

Access is agreed with you when the job is booked. For inside work, that normally means someone being in.

Are you ARBOMaster approved?

Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.

How much does commercial sealant cost in Bromley?

Size, access and the old material all affect the cost. Call for a quick quote.

Do you work in Bromley?

Yes. From our base in Crawley, we cover South East England, London and all of Scotland.

Can you do several jobs on one visit?

Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.

Signs you need commercial sealant in Bromley

Plenty of commercial bathrooms have no window at all, so if the fan is weak, steam lingers and the sealant stays damp. That’s when black mould sets into the bead.

Keep an eye out for these signs:

  • Black, stained silicone in guest bathrooms
  • Silicone laid over old silicone by a previous contractor
  • Joints that need doing before an inspection or audit
  • Failed joints in office kitchens and tea points

If you look after a church, hall or community building such as Church of St Peter and St Paul, any kitchen and washrooms need the same sealant care as any other building.

Before you book anyone

  • How the joint is cleaned and prepared
  • Whether the sealant suits the joint
  • What happens if the job turns out different
  • Are they insured?

Our hiring checklist

Surface by surface

Welfare facilities

Shower rooms in welfare blocks get heavy use and need sound joints. We reseal with anti-fungal sanitary silicone, including accessible wet rooms.

Student & care accommodation

Halls and care homes often have many near-identical bathrooms. We agree a programme and work through them steadily.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job