Greater London · England

Fire Rated Sealant in Earlsfield

Professional fire rated sealant in and around Earlsfield, with old sealant always removed completely.

  • Fire stopping disturbed by later work
  • Open joints along the top of partitions
  • Gaps left after a refit or conversion

Fire rated sealant in Earlsfield

What affects the cost of fire rated sealant

Every job gets its own quote. These are the things that affect it:

  • Which sealant suits the joint
  • How much old sealant there is and how hard it is to remove
  • Any working-time requirements on site
  • Whether there’s mould to deal with

Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.

What to tell us for a quote

What to tell us when you ask for a quote:

  • The problem you’ve noticed
  • Whether it has been sealed before
  • How we’d reach the joints
  • Where the job is, and your postcode

It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, ring 0345 464 0079 or email us.

About our fire rated sealant in Earlsfield

Where services or frames pass through a fire-resisting wall or floor, the gap around them needs a fire-rated seal. We apply intumescent and fire-rated sealants to the manufacturer’s tested details for each gap, and we can record what went where. Typical jobs include new service routes left unsealed after building work and open holes round services passing through fire walls, across flats & HMOs, service penetrations and plasterboard & masonry.

In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. In Earlsfield, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.

Each job carries a 12-month guarantee, large or small.

Location
Earlsfield (SW18, SW17, SW19)
Wider area
Greater London
Cover
A year, on every job
Quotes
A clear price before we start
Call
0345 464 0079
Updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

For landlords and businesses

Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.

We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured.

What fire rated sealant looks like in Earlsfield

Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed. Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, which is often where open fire-stopping gaps are first noticed. We work to the specification you’re given, installing the product to its tested details.

Letting a property close to Earlsfield station? Then any gap left by new services in shared walls should be closed with a fire-rated product. If you look after a building such as Beatrix Potter Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices.

Earlsfield is about 2 miles north-east of Wimbledon, in Greater London. Every kind of property in Earlsfield can book us for fire rated sealant, old or new, large or small. Every job comes with our 12-month guarantee. Across Greater London, we cover 764 places, and Earlsfield is one of them.

Here we cover the SW18, SW17 and SW19 postcode area for fire rated sealant. If you need fire rated sealant at a property on Burr Road, Acuba Road and Mount Road or a nearby road, our applicators can take on the job. Nearby, we also carry out fire rated sealant in Southfields (1 mile north-west), Summerstown (1 mile south), Wandsworth (1 mile north), Tooting Bec (1 mile south-east) and Tooting (1 mile south-east). Larger places within reach include London (5 miles north-east), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (4 miles north), St Pancras (6 miles north-east) and Shoreditch (7 miles north-east).

Landmarks near Earlsfield

Typical jobs here are in homes near Hillcroft School, Southfields Academy and Leather Bottle pub and the streets around them. Earlsfield has its own railway station: Earlsfield station. Well-known places in the area include Southside Wandsworth (0.8 miles north-west) and St James' Hospital (1 mile east). Green spaces nearby include Battersea Park Lake and Wandle Meadow Nature Park.

Map of Earlsfield © OpenStreetMap contributors

The process

Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it generally takes from a few hours to a few days, depending on the number of gaps and the access. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.

  1. We plan the order of work and access, floor by floor or flat by flat.
  2. Old, damaged or unsuitable sealant is removed.
  3. Dust and loose debris are cleaned from each gap.
  4. The fire-rated or intumescent sealant is applied and tooled to the tested detail.
  5. We record what was done and flag anything that needs a different system.

How to prepare

  • Let us know about earlier repairs to the joints
  • Mention any tricky access
  • On commercial sites, let us know about site rules

How to get a quote

Want a quote for fire rated sealant? Please ring 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.

Get a quick quote

Related advice

When it isn’t the sealant

Honest advice matters more to us than a booking, so here’s what new sealant won’t do:

  • Big openings where sealant alone is not the tested solution
  • Fire doors that need new seals, closers or hardware
  • Sign-off of the building, which sits with building control or your assessor

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

What we seal

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

Why deal with it now?

Fire-rated sealants need more care than everyday sealant. Depth, backing and surface preparation all affect how a seal performs, so we follow the maker’s details on every gap. In a flat in Earlsfield, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.

Leaving a failed joint usually makes the job bigger, not smaller. If you are not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.

Why us?

  • ARBOMaster approved applicator
  • Old sealant always removed completely
  • Anti-fungal silicone where joints get wet
  • One-year guarantee on every job

Take a look at what affects the cost or our reviews.

When to call us in Earlsfield

Movement in the structure can open gaps too: cracked or debonded sealant leaves an open route through the wall. Knocks, maintenance and building work damage it further.

If you can see any of these, it’s time to have the joints looked at:

  • Fire seals that have cracked with movement
  • Open gaps behind door architraves
  • Unsealed gaps where pipes and cables go through a wall
  • Fire stopping disturbed by later work

If you look after a church, hall or community building such as St John the Divine, older buildings that have had new heating or wiring often have service gaps worth checking.

Before booking anyone

  • Whether they’re fully insured
  • Is VAT in the price?
  • How long to leave it before use
  • Who turns up on the day

10 questions to ask before you book

DIY versus a professional finish

Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.

If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.

Your questions about fire rated sealant in Earlsfield

Do you work for landlords with property near Earlsfield station?

Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear price.

Can you do fire rated sealant in Earlsfield?

Yes. Our work covers London and the South East, and Earlsfield is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll send you a clear quote.

Should I try DIY first?

For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.

Do you remove the old sealant?

Yes. All of the old material is cut out and the joint cleaned before applying anything new.

Do the sealants smell?

Possibly a little. It fades as the sealant cures, and ventilation helps.

Can you seal over the old sealant?

No. The old sealant always comes out first, so the new sealant bonds properly.

What sealant do you use?

It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.

How long will you be here?

That depends on the amount of work, but most jobs take a few hours for a handful of gaps, and longer for a whole building. We’ll tell you when we quote.

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