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

Facade and window perimeter sealing in Broom Hill, Greater London

Planning work on a facade joint in Broom Hill? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Failed sealant on precast panel joints
  • Water coming in around window frames
  • New sealant peeling off old mastic
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Need facade sealing in Broom Hill?

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

Our process

Site rules come first: sign-in, induction and whatever permit system the building uses. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. We remove the old bead and check the edges are sound.
  4. Joints are cleaned, primed if required and fitted with backing rod.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. Once signed off, the work carries our 12-month guarantee.

What we need from you

  • Point out parking and an unloading spot
  • Send asbestos survey details if the building is pre-2000
  • Warn occupants and staff about the work

Ask for a quote

The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or ring 01277 525 020 or send photos by email if you’d rather talk the job through.

Get a price

Related advice

How we handle facade sealing in Broom Hill

Installing framed glazing systems isn’t part of our work. We handle the sealant joints that surround those elements: the frame-to-structure perimeter, panel-to-panel joints and window and door surrounds, using sealants classified for facade or glazing use. If you have gaps between rainscreen or cladding panels and draughts around frames and panels, we can put it right, whatever the surface. Looking for mastic applicators who cover Broom Hill? We have been sealing commercial buildings since 2005.

Building sites in London tend to be tight: small compounds, delivery slots and shared hoists and scaffold. We fit around the programme, sealing each elevation or floor as other trades hand over.

Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Place
Broom Hill (BR6, BR5)
Wider area
Greater London
Guarantee
12 months on every job
Price
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Why deal with it now?

Patch repairs over old sealant tend to come back. A full cut-out and reseal costs more on the day but lasts much longer and avoids repeat call-outs. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.

Pricing facade joints depends on quantities, condition and access, plus any specification you are working to. Call for a quote.

Why choose Mastic Doctor in Broom Hill

  • Standard and matched colours in many product ranges
  • Products installed to the manufacturer’s instructions
  • Fully insured
  • Colours chosen to suit frames, cladding or finishes where possible

Take a look at how commercial sealant jobs are priced and how we’re accredited.

Building owners, agents and FMs in Broom Hill

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.

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.

New build and refits around Broom Hill

Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Broom Hill. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for. The area within 2 miles of Broom Hill holds several hotels. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.

Further education sites such as Bromley College, 2.8 miles to the west of Broom Hill, are extended and refurbished from time to time, with mastic often programmed into the summer break. New units and refits on sites such as Halo Business Park (to the north-east of Broom Hill) need their panel and perimeter joints sealed to the specification.

Broom Hill is about 1 mile south-west of Orpington, in Greater London. Any commercial site in Broom Hill is covered, for single jobs and planned programmes alike. We work across 764 places in Greater London, large and small. Sites around London have their own page, about 12 miles away.

Anyone looking for facade sealing in BR6 and BR5 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. We cover commercial and managed buildings on New Road, Irene Road and Sandy Lane and the roads nearby. We also cover Crofton (1 mile south-west), Petts Wood (1 mile north-west), Locksbottom (2 miles west), Farnborough (2 miles south-west) and Green Street Green (2 miles south). Further afield, our area takes in London (12 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles north-west), St Pancras (14 miles north-west) and Shoreditch (13 miles north-west).

Around Broom Hill

Locally, jobs take us to sites close to Jubilee Country Park, The Cricketers pub and The Priory School. The nearest railway station is Orpington station, about 0.6 miles south-west of the centre. Well-known places in the area include The Mall (3.8 miles north-west) and Orpington Hospital (1.3 miles south). Not far away are Summer Hill and The Warren.

Map of Broom Hill © OpenStreetMap contributors

Quoting for work in Broom Hill

A fixed quote reflects the actual work. It allows for:

  • Backing rod, priming and other preparation
  • Working within restricted access windows
  • Location, for remote and island sites
  • Quantities, in metres or numbers

What a job costs comes down to the quantity of joints, what has to come out first and the access. Call for a fixed quote when you’re ready.

Sending details for a quote

For an accurate fixed quote, we need to understand the site. Useful things to include:

  • Whether the building will be occupied during the work
  • Any dates the work must fit around
  • Any specification or named product
  • The postcode of the building

Need a figure for a tender or a budget? We will quote against your scope and drawings that you can work with. If you have questions first, call 01277 525 020 or send details through our quote form.

Surface by surface

Cladding panel joints

Panel joints on cladding and rainscreen systems take movement every day. The sealant has to match the movement and the panel finish, often a low-modulus silicone or hybrid.

Render and coated surfaces

Where the joint will be painted over, a paintable hybrid or PU sealant may suit. The choice depends on the specification and finish.

Do you need facade sealing in Broom Hill?

A frequent fault is a bead stuck to the joint’s rear face as well as its sides. Without rod or bond-breaker tape, the bead is held back.

Common reasons buildings call us in:

  • Failed sealant on precast panel joints
  • Perimeter sealant that has split or peeled away
  • Weathered joints at frame-to-structure perimeters
  • Draughts around frames and panels

Hospital estates such as Orpington Hospital (1.2 miles south of Broom Hill) tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.

Questions to ask before you book

  • Which product they’ll use, and why it suits the joint
  • Their plan for phasing and protecting the area
  • Proof of insurance
  • How long is the guarantee, and what does it include?

Questions to ask before you appoint anyone

Common questions from Broom Hill clients

Will you plan work around the academic year at somewhere like University of Greenwich Avery Hill Campus?

Yes, holiday working periods are the norm on campus jobs. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Can you take on a job at a hospital such as Orpington Hospital?

Yes, healthcare and care buildings are part of our work. We follow the site’s permits, sign-in and infection-control procedures in every area.

Can you just add new sealant on top?

No. A bead run over old sealant soon lifts. Our method is a full cut-out, cleaning, backing and a new bead.

Can weather delay the job?

Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

How do you choose the sealant?

The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

When can you be on site?

Give us your site hours and any access windows in your enquiry, and we’ll schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.

Do you guarantee your work?

Yes. Workmanship is guaranteed for 12 months on every job.

Accreditations

Trusted. Accredited. Insured.