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

Expansion joint sealing in Upper Holloway

Commercial sealant work in Upper Holloway for contractors, FMs and building owners: expansion and movement joint sealing in walls, decks and floors, quoted at a fixed price.

  • Joints where the bead has lost adhesion
  • Joints packed with grit and debris
  • Weathered movement joint sealant that no longer flexes
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Expansion joint sealing for businesses in Upper Holloway

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

Expansion joint sealing in Upper Holloway, done properly

Our movement joint work takes in walls, panels, decks and floors: brickwork and blockwork joints, precast and cladding panel joints, concrete joints, car park decks and ramps, podiums and floor movement joints. The product depends on the movement, the weather and anything that runs over it and we name it in the quote. Site teams most often ask us about damp inside where a wall movement joint has failed and leaks through car park deck joints onto the level below, across blockwork control joints, cladding panel joints and brickwork movement joints. Looking for mastic applicators who cover Upper Holloway? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.

Around Upper Holloway, as across London, joints are under constant load, from basement car parks and loading bays to podium decks and busy mall floors. When a joint fails, grit and water get in and the arrises start to break up.

Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.

Where
Upper Holloway (N19, N7, N6)
Wider area
Greater London
Cover
12 months on our workmanship
Quotes
Quoted before any work starts
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Expansion joint sealing around Upper Holloway: points for this area

Less than 3 miles from Upper Holloway there are at least three named estates and business parks. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest. Few London car parks or loading bays can be taken out of use for more than a short spell, which is why we work a few bays at a time.

For an occupier at a site such as Bush Industrial Estate, which lies south of Upper Holloway, the joints at loading doors and dock levellers typically see the hardest wear. A healthcare site such as The Whittington Hospital (to the north-west of Upper Holloway) depends on car parks, ramps and service yards whose joints take traffic all day.

Upper Holloway is about 2 miles east of Hampstead, in Greater London. We cover Upper Holloway, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Greater London, 764 places are covered, including Upper Holloway.

We take on movement joints across the N19, N7 and N6 postcode area. For a building on Ward Road, Kiver Road and Foxham Road or nearby, send details and we’ll quote for movement joints. With the A103 nearby, Upper Holloway is straightforward for us to reach. Nearby places we also cover include Tufnell Park (1 mile south), Dartmouth Park (1 mile south-west), Highgate (1 mile north-west), Nag's Head (1 mile south-east) and Holloway (1 mile south-east) for movement joints. Bigger towns within reach include London (5 miles south), City of Westminster (4 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), St Pancras (3 miles south) and Shoreditch (4 miles south-east).

Landmarks near Upper Holloway

Around Upper Holloway, our work takes us to commercial buildings near City of London Academy, Whittington Park and The Mother Red Cap pub. Nearby too are Asanté Academy of Chinese Medicine (1.2 miles north-west) and Vaughan Williams Memorial Library (2 miles south). Upper Holloway has its own railway station: Upper Holloway station. Well-known places in the area include The Mall Wood Green (2.3 miles north-east) and Royal Northern Hospital (0.5 miles south-east). Green spaces nearby include Dartmouth Park Hill and Parkland Walk.

Map of Upper Holloway © OpenStreetMap contributors

General trades versus a specialist

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Some joints are best left to specialists: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.

When to call us in Upper Holloway

The edges of the material can fail rather than the sealant. Weak or crumbling concrete, brick or render edges give the sealant nothing sound to grip.

It’s worth sending us details if you spot any of the following:

  • Expansion joints split through the centre of the bead
  • Brittle, chalky sealant on external joints
  • Leaks through car park deck joints onto the level below
  • Arrises breaking up along floor joints

A campus such as American University in London (to the east of Upper Holloway) has long runs of movement joint in its buildings, decks and paving.

Before you book anyone

  • How long is the guarantee, and what does it include?
  • How the existing material will be dealt with
  • Their pre-qualification and accreditations
  • Will CSCS-carded applicators be on site?

How to choose a sealant contractor

Different surfaces, different methods

Cladding panel joints

Cladding panels move more than masonry as they heat and cool. The joints need a low-modulus sealant with enough movement capability in a colour confirmed for that product.

Internal floor movement joints

Forklift and pallet-truck wheels break unsupported joint edges. The right filler or sealant for the traffic and movement protects them.

What we can’t put right

Some faults sit outside our scope, and we say so rather than covering them up:

  • Changing the joint layout or spacing of a structure
  • Failed waterproofing membranes on podiums, roofs or decks (a waterproofing specialist’s job)
  • Concrete or masonry repairs along the arrises

If in doubt, speak to us on 01277 525 020 or use the quote form and we will say what we think.

Where we work in Upper Holloway

  • Car park decks and ramps
  • Podiums and floor movement joints
  • Cladding panel joints
  • Blockwork control joints
  • Precast concrete panel joints
  • Brickwork movement joints

From enquiry to sign-off

Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. Planning a London job such as one in Upper Holloway starts with access. Give us the hours we can be on site and we will schedule to suit.

  1. We assess the joints on site or from photos, noting widths and how each has failed.
  2. You receive a fixed quote stating the product and the movement it is rated for.
  3. Where areas have to stay open, we agree a phased sequence before starting.
  4. We strip the old sealant or filler and prepare each face until it’s sound and dry.
  5. Depth is controlled with backing, the faces are primed where the maker calls for it, then the bead is laid and tooled.
  6. Finished joints are inspected, the cure time confirmed and the 12-month guarantee applies.

Before we start on site

  • Have the specification and drawings to hand
  • Send your site hours and access windows
  • Arrange parking or a loading space

Getting a fixed quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call 01277 525 020 or send photos by email.

Get a quick quote

Read more

What sets the cost

We price every job individually. The things that drive the figure:

  • Which sealant the job calls for
  • Quantities, in metres or numbers
  • Backing rod, priming and other preparation
  • How accessible the joints are

We don’t publish prices, since every building and every scope is different. Call for a quote and we will price your job on its own details.

What we need to price the job

A few photographs plus some basic facts will normally do. It helps to include:

  • Any specification or named product
  • Any dates the work must fit around
  • The asbestos register, for older buildings
  • How the joints are reached, and at what height

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, speak to us on 01277 525 020 or email a schedule or drawings.

Your questions answered

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

Yes. Inductions, permits and timed loading are routine for us in London. Share the building’s contractor rules and we’ll work to them. The ULEZ covers the whole of Greater London, which we allow for

Is Bush Industrial Estate, near Upper Holloway, within your area?

Yes, sites like Bush Industrial Estate are within our area, along with the rest of Upper Holloway. Photos and a short description are enough for a first look.

Will your applicators have CSCS cards?

Yes. Our applicators hold CSCS cards, as many construction sites ask for.

When is resealing likely to be due?

Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.

Can you quote from photos?

Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we’ll arrange a visit.

What sealant do you use in movement joints?

We choose a sealant with a movement capability that suits the joint. Hybrid or MS polymer products suit some mixed-material joints.

Are you CHAS accredited?

Yes. We’re CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.

Accreditations

Trusted. Accredited. Insured.