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

Facade and window perimeter sealing in Totteridge, Greater London

Need facade sealing in Totteridge? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Damp patches beside frames after rain
  • Cladding panel joints that have opened up
  • Weathered facade joints that have lost their grip
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Facade sealing across Totteridge

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

How the job changes by surface

Brick and stone facades

Stone can absorb plasticisers from the wrong sealant. We use a product suitable for the stone where the specification names one, with masked edges for a clean line.

Window and door perimeters

Perimeter joints move as frames expand and contract in the sun. Rod placed at the right depth lets the bead stretch without tearing.

How we handle facade sealing in Totteridge

Sealant around windows, doors and cladding panels stops rain reaching the wall behind. When a perimeter bead splits or peels, water finds its way behind frames and into the structure. We remove failed sealant and install a new bead chosen for the joint and how far it moves. Most enquiries involve sealant pulling away from frames or panels and hard, chalky sealant that no longer flexes, on coping and flashing joints, cladding panel joints and window and door perimeters. For commercial sealant work in Totteridge, you deal with one contact from quote to sign-off, whether it’s one building or several.

Every London site, Totteridge included, is inside the ULEZ, which applies to deliveries and contractors’ vans alike. Alongside that, sites usually need booked deliveries and a plan for where materials go.

Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Totteridge (N20, EN5)
Wider area
Greater London
Guarantee
12 months on our workmanship
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026

Facade sealing in Totteridge: the local picture

A 2-mile radius around Totteridge takes in a number of hotels. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Site traffic in Totteridge falls within London’s ULEZ, like everywhere else in Greater London. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for.

On a campus such as Middlesex University, 3.2 miles south-west of Totteridge, new teaching buildings and residences are normally built and refurbished around the academic year. Extensions at sites like Barnet Hospital, 1.2 miles north-west of Totteridge, typically sit beside working departments, and the mastic follows strict access rules. Units on estates such as Hadley Manor Trading Estate, 1.3 miles to the north of Totteridge, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.

Totteridge is about 1 mile south-west of Barnet, in Greater London. We cover commercial sites throughout Totteridge, whether it’s a single job or part of a planned programme. Totteridge is one of 764 places we cover in Greater London. London is covered too, some 10 miles away.

We cover the N20 and EN5 postcode districts. Streets here include Barnet Lane, Grange Avenue and Chestnut Lane, and sites on any of them can send details for a fixed quote. If your building is just outside Totteridge, we cover Hadley (1 mile north), High Barnet (1 mile north), Arkley (2 miles north-west), Mill Hill (2 miles south-west) and Rowley Green (2 miles north-west). Nearby towns on our patch include London (10 miles south-east), City of Westminster (9 miles south), Marylebone (8 miles south), Kensington (9 miles south), St Pancras (8 miles south-east) and Shoreditch (9 miles south-east).

Around Totteridge

We work on buildings around Francis Skaryna Belarusian Library and Museum, Susi Earnshaw Theatre School and Brook Farm Open Space and the streets around them. Totteridge’s nearest station is Oakleigh Park station, about 1.5 miles east. Nearby you’ll also find Francis Skaryna Belarusian Library and Museum (1.5 miles south-east) and Barnet General Hospital (1.3 miles north-west). For a walk, there’s Totteridge Green and Darland's Lake.

Map of Totteridge © OpenStreetMap contributors

Building owners, agents and FMs in Totteridge

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Totteridge can sit alongside others in a wider programme.

Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so the building keeps working while we do.

Your questions answered

Would you work within a site like Barnet Hospital?

Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.

Can you work in a London building with booked loading and goods-lift slots?

Yes, we plan every London job around the building’s own access rules. Say when the building is occupied and when it’s quiet, and we will plan accordingly. The ULEZ covers the whole of Greater London, which we allow for

Do you provide access for facade work?

We agree access with the client at the start. Let us know what access is in place or planned.

Can you look at water coming in around a frame?

Yes. Photos are often enough to start, followed by a visit if needed. Many frame leaks are sealant failures, though not all, and we’ll tell you which.

Does weather matter for sealant work?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.

What do you charge?

It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote and we will price it properly.

Do you replace windows or glass?

No. Glazing, windows and glass replacement aren’t part of our work. We seal the joints around them, including perimeters where frames meet the structure.

What affects the price in Totteridge

Quotes vary with the job. Expect it to depend on:

  • The product specified
  • The total length or number of joints
  • Access and working height
  • Joint width, depth and condition

We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote.

Details that help us quote

To price the job accurately, we need a clear picture of the site. Send us:

  • A wide shot and a close-up of the area
  • Drawings or a marked-up plan, if available
  • Access details, including height
  • The asbestos register, for older buildings

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or email us with what you know.

Maintenance after handover

Cleaning and maintenance staff play a part too. Pass these on to them:

  • Avoid patch repairs on failed facade joints
  • Investigate damp beside windows promptly
  • Check the asbestos register before old mastic is disturbed
  • Check that rainwater leaves the facade the way it was designed to

If new signage, brackets or services are fixed through a sealed joint, the seal needs making good. Make sure the joint is resealed afterwards.

Tie resealing in with redecoration, cladding repairs or other access. One set-up for several trades saves money.

Leave it or put it right?

Failed joints let in more than water: draughts around frames add to heating costs and complaints. Resealing deals with the draught as well as the leak. Failed sealant in a building in Totteridge can quickly affect neighbours, tenants or the floor below: water travels through shared structures, and a small leak becomes a dispute between occupiers. Dealing with it early is simpler for everyone.

Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.

Why choose Mastic Doctor in Totteridge

  • A Constructionline member, so easy to vet
  • Work to your specification and the manufacturer’s guidance
  • Fixed quotes based on photographs, drawings or a visit
  • Public liability insurance in place

See how commercial sealant jobs are priced or how we’re accredited.

How a job runs

Where the site stays busy, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then handed back before we move to the next. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. We plan access and the order of elevations with the client.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. Each joint is cut out and the edges inspected.
  4. Faces are cleaned, primed where needed and backed.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. We hand over with our 12-month workmanship guarantee.

Preparing the site

  • Flag any permit to work we’ll need
  • Tell us your opening times and when work is allowed
  • Arrange parking or a loading space

Get a fixed quote

Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Ask for a quote

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Accreditations

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