Greater London · England

Fire Rated Sealant in Little Chelsea

Fire-stopping gaps in Little Chelsea need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.

  • Gaps around pipes and cables through fire-resisting walls
  • Open gaps behind door architraves
  • Gaps where walls meet ceilings or slabs

Trusted fire rated sealant in Little Chelsea

Do you need fire rated sealant in Little Chelsea?

A lot of fire stopping is out of sight: in ceiling voids, service risers and behind boxing. Out of view, damage sits unnoticed until someone inspects.

Signs it’s time to call us include:

  • Sealant items on a fire risk assessment action list
  • Door frames with gaps between frame and wall
  • Seals cut through by electricians, plumbers or data installers
  • Holes left by a change of layout

If you look after a church, hall or community building such as Church of St Andrew, service openings in its walls need the right fire-rated sealant, as in any building.

Before you book anyone

  • Whether all the old sealant comes out first
  • The length of the guarantee
  • Whether the sealant suits the joint
  • Whether they’re fully insured

Choosing a sealant specialist

How we handle fire rated sealant in Little Chelsea

Door frame gaps, linear joints and holes around services all have their own details. Measuring the gap and checking what it’s made of comes first, then apply it to the depth its tested detail calls for. If you have unsealed gaps around fire door frames and open joints along the top of partitions, we can put it right.

Across London, offices, shops, hotels, student halls and blocks of flats all need sealant work from time to time, whether that is washroom resealing or fire-rated sealant around service openings. Where a building in Little Chelsea needs to stay open, work can be planned outside normal hours.

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

Where
Little Chelsea (SW10, SW3, SW7)
Region
Greater London
Guarantee
A year, on every job
Quote
A clear quote up front
Call
0345 464 0079
Last updated
26 October 2026
The Mr Mastic team in navy uniforms in front of three Mr Mastic vans

How to look after the new joints

So the new joints stay in good condition:

  • Check risers, ceiling voids and cupboards during building checks
  • Keep photos of seals that will be hidden
  • Do not paint over fire sealant until it has cured
  • Flag any open gap you spot round a pipe or cable

Leave the sealant to cure fully before painting near it. Not every fire-rated sealant takes paint, so ask us which we used.

Any job that breaks through a wall or ceiling should include resealing. Doing it at the time avoids leaving gaps behind.

Little Chelsea: your questions answered

Is parking an issue for fire rated sealant in Little Chelsea?

Parking in Little Chelsea, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.

Do you take on hotel work around Little Chelsea?

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.

Will the old sealant be removed?

Yes. All of the old material is cut out and the joint cleaned.

Are you ARBOMaster approved?

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

Will you assess my building’s fire safety?

No, we do not assess buildings. When your assessor or designer has set out what’s needed, we can quote for the fire-rated sealant items.

Is it messy?

No. We work neatly, protect the area around the joints and tidy up afterwards.

Is the work guaranteed?

Yes, for a year. If there’s a problem with our work in that time, tell us and we will put it right.

Can you match the sealant colour?

Generally, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before we start.

How it works

Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it generally takes anything from a few hours to several days, depending on how many gaps there are. In Little Chelsea, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.

  1. Access to each area is agreed so the work can run in order.
  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.

Preparing for the visit

  • Clear items away from the joints we’re working on
  • Tell us about any previous sealing or DIY attempts
  • Let us know about parking restrictions

Getting a quote

There’s no standard price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.

Get a quick quote

Advice

DIY versus a professional finish

The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.

Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.

What we can’t put right

We’ll always be straight with you, so here’s what new sealant will not do:

  • Big openings where sealant alone isn’t the tested solution
  • Assessing a building’s fire safety
  • Doors that are not fire doors in the first place

If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.

Where we work in Little Chelsea

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

Surface by surface

Plasterboard walls

Holes in plasterboard are often cut roughly for services. Gaps that are too big for sealant alone need a different detail and we’ll flag it.

Masonry and concrete

Core-drilled and broken-out holes in concrete are often irregular. We check the gap size around the service to make sure it suits the product.

Workplaces and buildings in Little Chelsea

Little Chelsea has hotels and guest accommodation in and around it. Hotel work can be planned room by room, with out-of-hours working where needed. In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, and gaps around services are often picked up there. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.

As a London address, Little Chelsea can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. For landlords with property near Imperial Wharf station, any gap left by new services in shared walls should be closed with a fire-rated product.

Little Chelsea is about 1 mile north of World's End, in Greater London. Across the SW10 area, our applicators can take on fire rated sealant. Our area takes in 764 places across Greater London.

Every address in SW10, SW3 and SW7 is covered for fire rated sealant, from the main roads to the quietest streets. If you need fire rated sealant at a property on Ann Lane, King's Road and Lamont Road or a nearby road, our applicators can take on the job. We also cover World's End (1 mile south), South Kensington (1 mile north), Chelsea (1 mile north-east), Chelsea Harbour (1 mile south) and Walham Green (1 mile south-west). Within a short drive, we also cover London (4 miles east), Marylebone (3 miles north-east), St Pancras (4 miles north-east), Shoreditch (5 miles north-east), Walthamstow (10 miles north-east) and Hoxton (5 miles north-east).

Around Little Chelsea

Locally, jobs take us to homes and businesses close to Burton’s Court, English National Ballet School and Natural History Museum Library and Archives and the streets around them. Also close by are Chelsea Academy (0.5 miles south-west) and The World's End pub (within half a mile south). For rail, the closest station is Imperial Wharf station, roughly 0.7 miles south. A little further out are Baynard's Castle (3.8 miles north-east) and Chelsea Stadium Tour And Museum (0.6 miles south-west). Green spaces nearby include Campden Hill and WWT London Wetland Centre.

Map of Little Chelsea © OpenStreetMap contributors

Why deal with it now?

Fire-rated sealants need more care than everyday sealant. How it’s installed changes how it performs, so we follow the maker’s details on every gap. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Little Chelsea, the repair is bigger than the sealant job would have been.

Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.

Why Little Chelsea customers choose us

  • Anti-fungal sanitary silicone in wet areas
  • Fully insured
  • Neat joints and a tidy finish
  • 20+ years of sealant experience

See how sealant jobs are priced or what customers say.

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