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

Facade Sealing in Arnos Grove

Need facade sealing in Arnos Grove? It’s simple: send details, get a quote, we seal, guaranteed.

  • Unsightly perimeter sealant on a visible elevation
  • Old perimeter mastic that has dried out
  • Draughts around frames and panels
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Need facade sealing in Arnos Grove?

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Commercial clients in Arnos Grove

Building owners and managing agents use us on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.

For main contractors, we work as the sealant subcontractor. Programme, specification and site rules come first.

Facade sealing in Arnos Grove, done properly

A good facade joint depends on design as much as product. The width has to suit the expected movement and the sealant’s movement capability, and closed-cell rod sets the depth, keeping the bond to two faces. Most enquiries involve failed sealant on precast panel joints and leaks at window and door perimeters, on coping and flashing joints, window and door perimeters and perimeter joints where frames meet the structure. Most enquiries from Arnos Grove start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Building sites in London tend to be tight: small compounds, delivery slots and shared hoists and scaffold. 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 we finish is backed by a 12-month workmanship guarantee, in Arnos Grove as everywhere else we work. If our installation lets you down in that time, we return and fix it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Arnos Grove (N11, N14, N13)
Region
Greater London
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026

Doing it in-house

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

Honest limits

Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be one of these:

  • Installing or repairing glazing systems
  • Damaged frames that need replacing
  • Joints too narrow for the movement they take, which need redesign

If in doubt, give us a call on 01277 525 020 or email a schedule or drawings and we’ll say what we think.

Joints and surfaces we work on

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

Mastic packages on Arnos Grove sites

As part of Greater London, Arnos Grove is inside the ULEZ, which applies to every van on site. Delivery slots and scarce storage shape how and when the mastic goes in. A 2-mile radius around Arnos Grove takes in plenty of hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.

When a college such as Oak Hill College, 1.8 miles north-west of Arnos Grove, builds or refurbishes, the mastic package typically has to fit around students and staff. New units and refits on sites such as Brunswick Industrial Estate, 0.6 miles to the north-west of Arnos Grove, need their panel and perimeter joints sealed to the specification.

Arnos Grove is about 3 miles north-east of Finchley, in Greater London. We cover commercial sites throughout Arnos Grove, whether it’s a single job or part of a planned programme. Our Greater London coverage takes in 764 places. There’s a separate page for London, roughly 8 miles from Arnos Grove.

We take on facade joints across the N11, N14 and N13 postcode area. Buildings on Oak Lane, High Road and York Road are within our area for facade joints. You’ll find Arnos Grove on or near the A109 and A1004. If your building is just outside Arnos Grove, we cover New Southgate (1 mile west), Bounds Green (1 mile south), Southgate (1 mile north), Palmers Green (1 mile east) and Oakthorpe Park (1 mile east). Nearby towns on our patch include London (8 miles south), City of Westminster (7 miles south), Marylebone (7 miles south), Kensington (9 miles south), St Pancras (6 miles south) and Shoreditch (7 miles south).

Local landmarks in Arnos Grove

Locally, jobs take us to sites close to The Ranelagh pub, Broomfield School and Broomfield Park, among other places. Arnos Grove’s nearest station is New Southgate station, roughly 0.6 miles west of the centre. Well-known places in the area include Broomfield House Museum (0.5 miles east) and The Mall Wood Green (1.7 miles south-east). For a walk, there’s Highgate Hill and Darland's Lake.

Map of Arnos Grove © OpenStreetMap contributors

Signs you need facade sealing in Arnos Grove

A frequent fault is a bead stuck to the joint’s rear face as well as its sides. With no backing, the sealant is restrained.

Clients typically get in touch after noticing something like this:

  • Previous reseals run over old sealant
  • Cladding panel joints that have opened up
  • Unsightly perimeter sealant on a visible elevation
  • Perimeter sealant that has split or peeled away

On a healthcare site such as Priory Hospital, 1.2 miles to the north of Arnos Grove, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.

What to look for in a quote

  • Do they follow the manufacturer’s priming guidance?
  • Will RAMS and insurance details be available?
  • Health and safety accreditation such as CHAS
  • Whether their applicators hold CSCS cards

Questions to ask before you appoint anyone

Arnos Grove: questions and answers

Can you work around term dates at a campus such as American University in London?

Yes. We plan campus work around teaching, exams and residence turnarounds. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Do you cover business parks and estates near Arnos Grove, such as Brunswick Industrial Estate?

Yes. Our area takes in Arnos Grove and its surroundings, with estates and business parks such as Brunswick Industrial Estate included. To start, just call the office on 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.

What about RAMS and site documents?

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

Will you just go over the old sealant?

No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.

Are you fully insured?

Yes. We are fully insured, and the certificate can go with your quote.

Will you check whether the sealant is causing the leak?

Yes. Photos are often enough to start, followed by a visit if needed. Failed perimeter sealant is a common cause, but not the only one, and we will be honest about which it is.

Is the work guaranteed?

Yes. Workmanship is guaranteed for 12 months.

Why deal with it now?

Resealing a few window perimeters is a small job; repairing water-damaged interiors and fixings is not. Leaks travel along the structure. Failed sealant in a building in Arnos Grove can quickly affect neighbours, tenants or the floor below. Dealing with it early is simpler for everyone.

What a job costs comes down to how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a fixed quote when you’re ready.

Why us?

  • Old sealant cut out, never sealed over
  • 12 months’ guarantee on every job
  • CSCS-carded applicators
  • Over 20 years of commercial sealing

Read our cost guide or how we’re accredited.

Our process

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then handed back before the next one starts. Planning a London job such as one in Arnos Grove starts with access. Give us the hours we can be on site and we’ll schedule to suit.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. We confirm the joint type, movement and the specified product.
  3. Failed beads are removed in full.
  4. Primer goes on where the product data asks for it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. The finished joints are checked with you.

What we need from you

  • Clear stock, furniture or equipment away from the joints
  • Warn occupants and staff about the work
  • Arrange parking or a loading space

Get a fixed quote

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Send what you have, and we will arrange a site visit if anything is unclear.

Ask for a quote

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