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

Fitzrovia facade sealing

Sealant work in Fitzrovia for main contractors, managing agents and facilities managers: facade joint and window perimeter sealing on commercial buildings, with a fixed quote first.

  • Old perimeter mastic that has dried out
  • Weathered joints at frame-to-structure perimeters
  • Failed sealant on precast panel joints
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Need facade sealing in Fitzrovia?

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

How we handle facade sealing in Fitzrovia

External sealing depends on the weather more than most trades. Joints have to be dry and the air and surface temperature within the product’s range, so frosty or damp mornings can hold work back. We plan for that and keep you updated. Site teams most often ask us about draughts around frames and panels and staining on stone next to old sealant, on stone and brick facade joints, perimeter joints where frames meet the structure and shopfront frames. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Fitzrovia, preparation and product choice get the time they need.

Construction in a London area such as Fitzrovia means working on constrained sites: limited storage, booked deliveries and access shared with other trades. Mastic is typically one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.

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

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Fitzrovia (NW1W, W1T, W1G)
Region
Greater London
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026

When it isn’t the sealant

Honesty saves time and money. Fresh joints won’t solve:

  • Damaged frames that need replacing
  • Installing or repairing glazing systems
  • Joints whose design needs changing by the specifier

Not sure which it is? You can speak to us on 01277 525 020 or email a schedule or drawings and we’ll tell you honestly before you book.

Joints and surfaces we work on

  • Window and door perimeters
  • Coping and flashing joints
  • Cladding panel joints
  • Stone and brick facade joints
  • Perimeter joints where frames meet the structure
  • Shopfront frames

Why it’s worth doing now in Fitzrovia

Each spell of rain drives water past a failed facade joint. The damage builds out of sight: wet linings, rusting fixings, staining and spoiled finishes. Resealing early costs far less than repairing what the water reaches. In a London building, a failed joint rarely affects only one party: water travels through shared structures, and a small leak becomes a dispute between occupiers. Putting it right early is less disruptive than dealing with the consequences.

No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.

Why appoint us

  • One contact handling all your sites
  • Colour agreed before work starts
  • CSCS-carded applicators
  • Fully insured, including public liability cover

See what affects the cost or our accreditations.

FAQs: Fitzrovia

Can you cope with the access rules in a London building?

Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. The building manager’s rules go straight into our method.

Does your area include sites such as Roman Way Industrial Estate, near Fitzrovia?

Yes, sites like Roman Way Industrial Estate are within our area, along with the rest of Fitzrovia. A few photos and the unit address let us price the work.

Do you have public liability insurance?

Yes. Mastic Doctor is fully insured, public liability included.

Will rain stop the work?

Wet joints or temperatures outside the product’s range mean waiting. The programme allows for it and we tell you if the forecast changes things.

Do you offer coloured sealant?

Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We will confirm the colours available for the specified product.

What site paperwork can you supply?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

How long do sealant joints last?

There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

Aftercare for building managers

After handover, a little attention goes a long way:

  • Inspect facade joints on a regular cycle
  • Keep the sealant details on the building file
  • Insist on a full cut-out when joints are renewed
  • Check that rainwater leaves the facade the way it was designed to

Let the new sealant cure before washing the facade or windows near it. Pressure washers and harsh cleaners can damage a fresh bead, so brief your window cleaners.

In pre-2000 buildings, check the asbestos register before old sealant is cut out. Older sealants can contain asbestos, and work stops until it’s tested if it’s suspected.

Do you need facade sealing in Fitzrovia?

Product choice matters: an acetoxy cure can mark stone or corrode some metals, and interior products break down outdoors. Neutral-cure, facade-grade products are what most external joints need.

Common reasons buildings call us in:

  • Leaks at window and door perimeters
  • Cold air coming in at window perimeters
  • Staining on stone next to old sealant
  • New sealant peeling off old mastic

New units and refits on sites such as Roman Way Industrial Estate, 1.7 miles to the north-east of Fitzrovia, need their panel and perimeter joints sealed to the specification.

Questions to ask before you book

  • Do they follow the manufacturer’s priming guidance?
  • Health and safety accreditation such as CHAS
  • How they’ll work around occupants
  • Will failed sealant be removed rather than covered?

Our contractor checklist

Commercial clients in Fitzrovia

Building owners and managing agents use us on sealant work across single buildings or whole portfolios. Several sites can go on one quote, which keeps the paperwork simple.

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.

From enquiry to sign-off

Inspect, seal, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. All of Greater London is in the ULEZ, and kerbside space in Fitzrovia can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. Access, site rules and timing are settled with the client up front.
  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. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. Once signed off, the work carries our 12-month guarantee.

Preparing the site

  • Flag any permit to work we’ll need
  • Tell staff and tenants when we will be in
  • Move anything stored against the joints

Quotes

A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we will fill any gaps with a visit.

Get a price

Read more

Building and refurbishing in Fitzrovia

Site traffic in Fitzrovia falls within London’s ULEZ, like everywhere else in Greater London. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. A good number of hotels sit less than 2 miles from Fitzrovia. Hotel extensions and refits typically have to fit around bookings, so mastic dates are tight.

Further education sites such as London College of Clinical Hypnosis (0.5 miles south-east of Fitzrovia) are extended and refurbished from time to time, with mastic often programmed into the summer break. University estates such as University of Westminster, less than half a mile to the south-west of Fitzrovia, tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal.

Fitzrovia is about 1 mile north-east of Marylebone, in Greater London. Fitzrovia sits inside our coverage and the rest of Greater London, with the same fixed quotes and 12-month guarantee as everywhere else. Our Greater London coverage takes in 764 places, from busy centres to rural villages.

Business premises anywhere in NW1W, W1T and W1G are within our area. Streets here include Euston Road, Duke's Road and Market Place. Fitzrovia sits on or close to the A501 and A4200. We also cover Euston (1 mile north-east), Marylebone (1 mile south-west), Bloomsbury (1 mile east), Somers Town (1 mile north-east) and Soho (1 mile south-east) for facade joints. Further afield, our area takes in Kensington (3 miles south-west), Shoreditch (3 miles east), Walthamstow (7 miles north-east), Whitechapel (3 miles east), Hampstead (3 miles north-west) and Ruislip (12 miles west).

Around Fitzrovia

Around Fitzrovia, our work takes us to commercial buildings near Carpenters Arms, UCL School of Slavonic and East European Studies and St Anne's Churchyard and the streets around them. You’ll also find Wellcome Library (less than half a mile north-east) and Maria Fidelis Catholic School FCJ (under half a mile north). Fitzrovia has its own railway station: London Euston station. Well-known places in the area include London Foot Hospital (under half a mile south-west) and Blindiana Museum (less than half a mile west). The countryside around Fitzrovia includes St. James's Park Lake and Primrose Hill.

Map of Fitzrovia © OpenStreetMap contributors
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