Holborn mastic sealing
Sealant work in Holborn for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.
- A mix of products and colours from past repairs
- Damaged joints in communal entrances and corridors
- Brittle perimeter mastic across a building
Mastic sealing for Holborn sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle mastic sealing in Holborn
Mastic Doctor has sealed joints on commercial and residential blocks since 2005. Every applicator holds a CSCS card and we hold public liability insurance. Resealed mastic joints in Holborn carry our 12-month guarantee. Most enquiries involve complaints coming in block by block and draught complaints from residents or tenants, on communal kitchens and washrooms, balcony and threshold joints and window and door perimeters on blocks. A single leaking joint is often how a building in Holborn first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.
London has a large stock of purpose-built blocks, mansion flats and converted buildings managed by agents and housing associations. Mastic around windows, doors and balconies tends to fail across a whole block at a similar time.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Location
- Holborn (WC1X, WC1N, EC1R)
- Region
- Greater London
- Cover
- 12 months on every job
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
For owners and agents in Holborn
In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. We plan around the notices and access you arrange.
Schools and community buildings such as St Alban's Church of England Primary School need frame and external mastic kept sound like any building. For owners of several units at places like Grand Vitesse Industrial Estate, 1.2 miles to the south-east of Holborn, one programme can deal with frame and external mastic across the lot. Older community buildings, St Alban's Church among them, often have frames of mixed ages whose mastic varies.
Holborn is about 2 miles north-west of London, in Greater London. We send applicators to Holborn for mastic joints, handled exactly as we handle every other area. Across Greater London, 764 places are covered, Holborn among them.
Commercial sites across WC1X, WC1N and EC1R are covered for mastic joints. Among the streets we cover are Shoe Lane, Drury Lane and New Square, and sites on any of them can send details for a fixed quote. Being close to the A4 and A40, Holborn is easy to get to with materials and equipment. Sites close to Holborn are covered too, including Farringdon (1 mile east), St Pancras (1 mile north-west), Clare Market (1 mile south), Smithfield (1 mile east) and Temple Bar (1 mile south). Nearby towns on our patch include Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (13 miles west), Brompton (3 miles south-west) and Stockwell (4 miles south).
Landmarks near Holborn
In Holborn, that means premises near The Yorkshire Grey pub, British Library of Political and Economic Science and City Academy. Nearby too are Elizabeth Garrett Anderson School (0.9 miles north) and Lincoln's Inn Fields (under half a mile south-west). There’s a railway station in Holborn itself: Farringdon station. Other landmarks nearby include Montfichet's Tower (0.7 miles south-east) and Brunswick Centre (0.5 miles north-west). For a walk, there’s Barnsbury Wood and Ludgate Hill.
Why deal with it now?
Failed perimeter mastic lets cold air in around frames and the windows typically get the blame. In many cases, new perimeter sealant deals with it when the frames themselves are sound. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.
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 you’ll have a fixed figure to work with.
Why clients in Holborn choose us
- Fully insured, including public liability cover
- Failed material removed, not covered up
- One number for every site we cover
- Coloured sealants to suit the setting, where available
Read what affects the cost or our accreditations.
FAQs: Holborn
Do you work for managing agents with blocks near Farringdon station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Photos of each elevation help us quote accurately.
Do you take on jobs in Holborn where loading and access are tightly controlled?
Yes. Inductions, permits and timed loading are routine for us in London. Send the building rules and access times with your enquiry. The ULEZ covers the whole of Greater London, which we allow for
Will residents or tenants be disturbed?
Residents and tenants carry on as normal. If any flats or units need access, we will tell you in advance so it can be arranged.
Do you check for asbestos in old sealant?
Some mastics in pre-2000 buildings contain asbestos. We check the asbestos register or survey before disturbing it, and if it’s suspected, work stops until it’s tested.
Is mastic sealing guaranteed?
A 12-month guarantee covers our work. It applies to our workmanship rather than damage or problems with the frames.
Do you seal on top of existing sealant?
No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Do you work in Holborn?
Yes. We cover Holborn, and you can give us a call on 01277 525 020 or email the details over to get started.
Also near Holborn
Other services in Holborn
How a job runs
The first thing on site is a walk round with your contact, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. For a job in Holborn, access comes first. Send the building rules and access times with your enquiry.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- We strip out the old sealant.
- Joint faces are cleaned, backed and resealed.
- Buildings are completed in turn.
Getting the site ready
- For older buildings, check the asbestos register before work
- Explain the parking and delivery arrangements
- Have the specification and drawings to hand
Get a fixed quote
A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or phone 01277 525 020 or send details through our quote form to discuss it first.
Advice
Building owners, agents and FMs in Holborn
Hospitality, education, healthcare, office and retail clients come to us directly as well. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.
Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.
What we can’t put right
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be any of the following:
- Leaks through the frame itself rather than the perimeter
- Water coming in from the roof or rainwater goods
- Glazing that needs replacing
If in doubt, call 01277 525 020 or email us and we’ll say what we think before you book.
Where we work in Holborn
- Window and door perimeters on blocks
- External wall and movement joints
- Communal entrances and stairwells
- Balcony and threshold joints
- Communal kitchens and washrooms
- Shopfronts below residential blocks
How the job changes by surface
Commercial and mixed-use buildings
Tenants in commercial buildings need to keep trading, so we plan around them.
External movement joints
External movement joints take up expansion and contraction. Once that sealant goes, rain can reach the wall.
Aftercare for building managers
Sealant joints are maintenance items, and how long they last depends on how they’re treated. We suggest:
- List the paperwork your organisation requires when you send details
- Avoid piecemeal callouts where you can
- Include mastic in your cyclical inspections
- Have the asbestos survey to hand for older buildings
Keep bins, bikes and deliveries away from low-level joints where you can. Knocks cause many early failures in communal areas.
Joints on a building age together, so it pays to look at the whole elevation. Doing them together saves going back again and again.