Mastic Sealing in Bromley Common
We carry out mastic sealing for building owners, managing agents and housing associations in Bromley Common. Send details for a fixed quote.
- A mix of products and colours from past repairs
- Estate-wide sealant that is simply worn out
- Leaks at window and door perimeters
Mastic sealing near Bromley Common
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle mastic sealing in Bromley Common
In buildings from before 2000, some old mastics contain asbestos. Before we disturb it, we ask to see the asbestos register or survey, and work stops for testing if there’s any doubt. Removing asbestos-containing material isn’t something we do. We work on window and door perimeters on blocks, communal kitchens and washrooms and shopfronts below residential blocks, and the usual reasons a site gets in touch are movement joints with sealant missing and damaged joints in communal entrances and corridors. For commercial sealant work in Bromley Common, you deal with one contact from quote to sign-off, whether it’s one building or several.
London has a large stock of purpose-built blocks, mansion flats and converted buildings managed by agents and housing associations. Window and door perimeters, balcony joints and communal areas all have mastic that ages together across a building.
Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Place
- Bromley Common (BR2, BR1)
- Wider area
- Greater London
- Guarantee
- 12 months on every job
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Looking after the joints
Keep the joints in good shape with a few simple steps:
- Mention RAMS, insurance or CSCS requirements up front
- Check sealant joints during planned building inspections
- Ask residents or tenants to report leaks and draughts early
- Prioritise elevations facing the weather
If a joint we sealed fails within 12 months, tell us and we’ll look at it. Beyond that, routine checks spot the next round of repairs.
Failed mastic often goes unnoticed until heavy rain finds it. Acting at the first signs keeps it a straightforward reseal and the complaints that come with it.
Diagnose, treat, sign off
At the end of each section, the masking comes off, the area is cleaned and every joint is checked. Where the sealant needs time to cure before use, we tell you and sign the area. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- Each building is checked and signed off with the 12-month guarantee.
Getting the site ready
- For older buildings, check the asbestos register before work
- Share your working hours and any access restrictions
- Let us know about inductions and permits
Quotes
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to ring 01277 525 020 or send photos by email with what you know.
Related advice
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Also in Bromley Common
Should maintenance staff do it?
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Your questions answered
Can you work in a care home near Bromley Common with residents in?
Yes, with the manager deciding the order and timing of rooms. We follow the home’s own procedures throughout.
We manage a building near Bickley station. Can you help?
Yes, and several blocks can go on one quote. We work to your notice and access arrangements.
How soon can the area be used again?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.
Can you send RAMS and CSCS details before starting?
Our credentials include CHAS, Constructionline and public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.
Can you seal joints high up on a block?
It depends on the building. We agree access with you at quote stage so there are no surprises.
Do you guarantee the mastic work?
Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
Do you need mastic sealing in Bromley Common?
The edges of the material itself sometimes break away for example where render or brick edges crumble. We will tell you if the joint edges need repairing before resealing.
It’s worth sending us details if you spot any of the following:
- Water getting in round frames after rain
- Open joints in brickwork or panels
- Draught complaints from residents or tenants
- Patchy repairs in mismatched sealant
If you look after a block within reach of Bickley station (1.2 miles north of Bromley Common), frame and balcony mastic can be renewed on one programme.
What your quote should include
- Their plan for phasing and protecting the area
- Their approach to joint depth and backing
- Whether primer will be used where the manufacturer specifies it
- Their pre-qualification and accreditations
Building owners, agents and FMs in Bromley Common
Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.
Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, with CSCS-carded applicators on site.
Block-wide mastic in Bromley Common
The 2 miles around Bromley Common include nine care or nursing homes. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings. London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. We plan around the notices and access you arrange.
For owners of several units at places like Chartwell Business Centre, which lies north of Bromley Common, one programme can deal with frame and external mastic across the lot. Schools and community buildings such as Trinity Church of England Primary School need frame and external mastic kept sound like any building.
Bromley Common is about 2 miles south-east of Bromley, in Greater London. We cover commercial sites throughout Bromley Common. Our Greater London coverage takes in 764 places. London is covered too, some 10 miles away.
Work on mastic joints is covered throughout BR2 and BR1, for business premises of every kind. For a building on Pope Road, Crown Lane and Church Lane or nearby, we can quote for mastic joints. If your building is just outside Bromley Common, we cover Southborough (1 mile north-east), Hayes (1 mile south-west), Locksbottom (1 mile south-east), Shortlands (2 miles north-west) and Keston (2 miles south). Bigger towns within reach include London (10 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles north-west), St Pancras (12 miles north-west) and Shoreditch (11 miles north-west).
Around Bromley Common
In Bromley Common, that means premises near Norman Park, The Chequers Public House and Bishop Justus CofE School and the streets around them. The nearest railway station is Bickley station, roughly 1.2 miles north of the centre. A little further out are Bridgeways Day Hospital (less than half a mile east) and Bethlem Museum of the Mind (under half a mile south-west). The countryside around Bromley Common includes Summer Hill and Downham Woodland Walk.
Why deal with it now?
Piecemeal repairs over the years often leave mismatched sealant. Resealing a whole building gives a consistent finish and one 12-month guarantee. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.
What you get with us
- Standard and matched colours in many product ranges
- Public liability insurance in place
- Colours chosen to suit frames, cladding or finishes where possible
- CHAS accredited
Take a look at how commercial sealant jobs are priced and our accreditations.