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

Coloured Sealant in Islington

Our CSCS-carded applicators take on coloured and colour-matched sealant for visible joints in Islington and the surrounding area. Send photographs or drawings for a fixed quote.

  • Colour changes after a rebrand or refit
  • Old sealant that has yellowed, darkened or faded
  • Stained or mouldy coloured joints in washrooms
1
Send details
Photos, drawings or a schedule, or we 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
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m public liability

Coloured sealant across Islington

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

How the quote is worked out

Sealant work doesn’t have a standard rate, because every site is different. What we take into account:

  • The total length or number of joints
  • The site’s rules and procedures
  • Travel to remote or island sites
  • Backing rod, priming and other preparation

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we’ll explain how it’s made up.

What to include in your enquiry

The more we know, the firmer the quote. When you get in touch, include:

  • Specification clauses that apply
  • Asbestos survey details if the building is older
  • How the joints are reached, and at what height
  • When you need the work done

Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.

About our coloured sealant in Islington

Where colour is critical, a sample bead in a discreet spot settles the question. Sealant can look slightly different once it has cured, and again in different light. Let us know who signs off colour, and we will fit the sample into the programme. Site teams most often ask us about failed coloured sealant that has split or peeled and untidy coloured beads with ragged edges, across shop-fit joinery and counters, hotel bathrooms and public areas and powder-coated and anodised frames. A single leaking joint is often how a building in Islington first comes to us: we look at the rest while we are there and tell you what we find.

London’s commercial stock mixes period buildings turned into offices with modern glass and steel, so one job can involve stone, brick, powder-coated frames and laminate in a single visit. Each surface gets its own preparation and, where it’s seen, a sealant colour that sits with it.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Islington (N1, N7, NW1, EC1V)
Region
Greater London
Guarantee
12 months on every job
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026

Maintenance after handover

Your facilities or cleaning team can help the joints last. Share these points with them:

  • Keep harsh solvents away from visible joints
  • Settle the colour with the designer at the start
  • Insist on the agreed colour for any repair
  • Approve a sample bead on high-profile areas

Include coloured sealant in planned building checks. Look for splits, lifting edges and staining.

Share the colour reference with anyone working on the finishes. That keeps new work in line with what’s there.

Why it’s worth doing now in Islington

A standard colour is quicker to source, though not always right. On visible work, the small extra effort of a colour from the product’s range pays off at handover. 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: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.

Why choose Mastic Doctor in Islington

  • Colour options checked against the specified product
  • Our applicators hold CSCS cards
  • 12 months’ guarantee on every job
  • Health and safety: CHAS accredited

Read our cost guide and how we’re accredited.

Diagnose, treat, sign off

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 before the next one starts. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.

  1. We confirm the product the joint needs before talking about colour.
  2. Colour references, samples or photos of the finish are checked against the product’s range.
  3. Where colour is critical, a sample bead can be agreed in a discreet spot.
  4. We take out the existing bead, clean the joints and fit backing.
  5. The coloured sealant is applied and tooled with clean, masked edges.

What we need from you

  • Point out parking and an unloading spot
  • Tell us your opening times and when work is allowed
  • Share the asbestos register for older buildings

Request a quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.

Get a quick quote

Advice

For managing agents and facilities managers

Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.

If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

Frontages, fit-outs and joints in Islington

There are a good number of hotels within about 2 miles of Islington. A hotel refurbishment is full of joints that guests will see, and a matched colour keeps them discreet, with rooms done in turn while the rest stay let. At least three named trading, business or retail sites lie within about 3 miles of Islington. Each new occupier on a park like these tends to refit, from reception to staff kitchen.

For premises near Essex Road station (under half a mile east of Islington), footfall is part of the plan: work is phased so shops and offices keep trading. Units at places like Brunswick Centre, 1.3 miles to the south-west of Islington, are refitted as brands change, and the joints have to suit each new scheme. For a hotel such as Hotel Makedonia (0.7 miles north-west of Islington), the colour of a joint at the bar or the bath matters to the look of the room.

Islington is about 3 miles north-east of City of Westminster, in Greater London. Our applicators travel to Islington for work on colour-matched joints, handled exactly as we handle every other area. Across Greater London, 764 places are covered, Islington among them.

Postcode districts covered here: N1, N7, NW1 and EC1V for colour-matched joints. We cover commercial and managed buildings on Gibson Square, Old Royal Free Square and Cloudesley Square. Main routes into Islington include the B515 and A5203, which helps when planning parking and deliveries for the job. Nearby places we also cover include Pentonville (1 mile south), Angel (1 mile south), Barnsbury (1 mile north-west), Clerkenwell (1 mile south) and Lower Holloway (1 mile north-west). Further afield, our area takes in London (3 miles south), City of Westminster (3 miles south-west), Kensington (5 miles south-west), Walthamstow (5 miles north-east), Hampstead (3 miles west) and Ruislip (13 miles west).

What’s near Islington

Locally, jobs take us to sites close to Islington Green School, The King's Head Public House and Pilsudski Institute of London and the streets around them. You’ll also find Barnard Park (less than half a mile south-west) and St Mary's CofE Primary School (under half a mile east). There’s a railway station in Islington itself: Essex Road station. A little further out are King's College Hospital Charity (0.7 miles north-west) and Montfichet's Tower (1.7 miles south). The countryside around Islington includes Barnsbury Wood and Ludgate Hill.

Map of Islington © OpenStreetMap contributors

How the job changes by surface

Natural stone

Natural stone rarely has one colour, and the sealant has to work with that. A stone-compatible, neutral-cure sealant avoids staining.

Powder-coated and anodised frames

Frames finished to a RAL reference are a frequent colour-matching job. The frame colour is checked against what the product is made in, and the nearest option is agreed.

Common questions from Islington clients

Must a hotel around Islington close while you work?

Rarely, if ever. We take a few rooms out at a time. We agree the order of rooms and the timings with you before we start.

Is Roman Way Industrial Estate, near Islington, within your area?

Yes. Our area takes in Islington and its surroundings, with estates and business parks such as Roman Way Industrial Estate included. A few photos and the unit address let us price the work.

Do you cover Islington?

Yes. Sites across Islington are covered.

Do you need to see the site first?

Many jobs can be quoted from photographs, drawings or a joint schedule. Where they aren’t, we arrange a site visit before quoting.

Do you seal on top of existing sealant?

No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

Can you follow the specification on our project?

Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.

What’s the quickest route to a quote?

There are four steps: send details, get a quote, we seal, guaranteed. The first step only needs photographs and a postcode.

Accreditations

Trusted. Accredited. Insured.