Greater London · England

Fire-rated sealant in Kentish Town, Greater London

We cover Kentish Town for intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly and a one-year guarantee.

  • Joints picked up in a fire-stopping survey
  • Open gaps behind door architraves
  • Ordinary sealant used where a fire-rated product was needed

Fire rated sealant for Kentish Town homes and businesses

About our fire rated sealant in Kentish Town

Deciding which gaps need fire stopping isn’t our role; your assessor, designer or building control sets that out. Our part is applying the specified sealant carefully, to the right depth and with the right backing. If you have cracked or shrunken fire-rated sealant and gaps flagged on a fire risk assessment, we can help.

In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. For managing agents and building owners in Kentish Town, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.

You are covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or drop us an email.

Eleven members of the Mr Mastic team standing in front of branded white vans
Location
Kentish Town (NW5, NW1, NW3)
Wider area
Greater London
Cover
A year, on every job
Quotes
A clear quote up front
Phone
0345 464 0079
Last updated
26 October 2026

Common problems we fix in Kentish Town

Much fire stopping is hidden: in ceiling voids, service risers and behind boxing. Out of view, damage sits unnoticed until someone inspects.

The problems people usually mention when they call are:

  • Holes left by a change of layout
  • Open gaps behind door architraves
  • Joints picked up in a fire-stopping survey
  • Gaps around pipes and cables through fire-resisting walls

Kentish Town is in London, so parking needs planning: let us know about parking bays, permits or a driveway.

What to look for in a quote

  • Who turns up on the day
  • What the cure time is
  • How the joint is cleaned and prepared
  • Whether they seal over old material or remove it

10 questions to ask before you book

Can I do it myself?

Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.

The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.

The process

On the day, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before work begins. The work generally takes anything from a few hours to several days, depending on how many gaps there are. In Kentish Town, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.

  1. We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
  2. Each gap is measured and its substrate and service noted.
  3. Any non-fire-rated filler is removed and the gap cleaned.
  4. The specified fire-rated sealant goes in over any backing its detail requires.
  5. We hand over a list of locations and products for your records.

How to prepare

  • Move anything stored near the joints
  • Mention any parking rules near the property
  • For indoor joints, keep the area dry beforehand if you can

Getting a quote

Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, phone 0345 464 0079 or drop us an email.

Ask for a quote

Related advice

What the job involves on each surface

Flats and HMOs

Working in occupied flats needs some planning. Access to flats and common areas is agreed in advance so residents know what to expect.

Plasterboard walls

In plasterboard walls, the condition of the board edge matters. Loose material is removed so the sealant has a firm edge.

Kentish Town: your questions answered

Can parking be tricky for a visit in Kentish Town?

Parking in Kentish Town, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.

Do you work for hotels and guest houses in Kentish Town?

Yes. Hotel and guest-house work is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.

Can you fill the gap behind a fire door frame?

Yes. We often seal open gaps hidden behind the architrave. Doors, seals and closers need a door specialist.

Can tenants book the work?

We’re happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.

Can you quote for more than one area?

Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.

Do you offer different sealant colours?

We’ll suggest a colour to suit the surroundings. The choice depends on the product the joint needs.

Do you hold any approvals?

Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.

Is it OK to seal over old sealant?

No. We remove every bit of old sealant first, so the new sealant bonds properly.

Fire rated sealant around Kentish Town

Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange. Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, and gaps around services are often picked up there. We work to the specification you are given, installing the product to its tested details.

Community buildings like Church of the Holy Trinity with St Barnabas are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking. If you let a flat or house near Kentish Town West station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.

Kentish Town is about 2 miles east of Hampstead, in Greater London. If you need fire rated sealant in Kentish Town, please call 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Greater London, Kentish Town included. Our Greater London coverage runs to 764 places, Kentish Town among them.

Our applicators cover all of the NW5, NW1 and NW3 postcode area for fire rated sealant. That includes homes and businesses on Eton Road, Oval Road and Regal Lane. Other places close to Kentish Town include Chalk Farm (1 mile west), Camden Town (1 mile south-east), Gospel Oak (1 mile north), Primrose Hill (1 mile south-west) and Agar Town (1 mile south-east). Further out, we also cover London (4 miles south-east), Kensington (4 miles south-west), Shoreditch (3 miles south-east), Walthamstow (6 miles north-east), Hoxton (3 miles east) and Whitechapel (4 miles south-east).

Landmarks near Kentish Town

Typical jobs here are in homes near Primrose Hill, Haverstock School and North Bridge House School. Nearby too are The Hawley Arms (less than half a mile south) and Vaughan Williams Memorial Library (0.5 miles south). Kentish Town has its own railway station: Kentish Town West station. Nearby you’ll also find O2 Centre (1.6 miles west) and Montfichet's Tower (2.9 miles south-east). Green spaces nearby include The Long Water and Primrose Hill.

Map of Kentish Town © OpenStreetMap contributors

What sealant work cannot fix

Some problems need a builder, plumber or other trade rather than us:

  • Certifying a building or signing off its fire safety
  • A wall that isn’t a fire-resisting element to begin with
  • Deciding what fire stopping a building needs

Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before you book.

Joints and surfaces we work on

  • Flats & HMOs
  • Linear gaps
  • Door frames
  • Pipe & cable gaps
  • Service penetrations
  • Plasterboard & masonry

Looking after it afterwards

Aftercare is simple:

  • Tell trades working in the building that fire seals must be put back
  • Include fire stopping when you schedule refits
  • Photograph sealed gaps before they’re covered up
  • Never patch a fire seal with standard sealant

Do not drill through or remove a fire seal without putting it back properly. If you need new services through a sealed wall, plan the fire stopping as part of the job.

Leave a fire-stopping gap open and smoke can move through the building much more easily. Closing it is normally a straightforward job.

Work for landlords, hotels and businesses

From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.

Housing providers, facilities teams and property managers book us too in Kentish Town and across Greater London. Several sites can go on one quote.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job