Greater London · England
Fire-rated sealant in Merton, Greater London
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homes and businesses in Merton and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Door frames with gaps between frame and wall
- Fire stopping disturbed by later work
- Gaps left after a refit or conversion
What affects the quote in Merton
You’ll get a clear quote before work begins. It takes into account:
- Any mould that needs treating
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- Whether it has been sealed before
- Any access issues, like height or stairs
- The rough size of the job
- Where the job is, and your postcode
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you are ready, ring 0345 464 0079 or email us.
How we handle fire rated sealant in Merton
Fire stopping only performs as intended if it’s done to the detail: correct depth, correct backing and a product suited to the surfaces. That detail is what we take care over, gap by gap. If you have fire seals that have cracked with movement and open gaps behind door architraves, 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 Merton, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.
You get a 12-month guarantee, the same in Merton as everywhere else we work.
- Where
- Merton (SW19)
- Region
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Commercial buildings in Merton
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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details. Commercial buildings in London often have strict access rules and limited loading, so out-of-hours working can be arranged where needed.
As a London address, Merton can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. If you look after a church, hall or community building such as St John The Divine, service openings in its walls need the right fire-rated sealant, as in any building. Schools such as Merton Abbey Primary School are buildings too, and service openings in fire-resisting walls need checking after any refurbishment.
Merton is about 1 mile south-east of Wimbledon, in Greater London. For fire rated sealant in and around Merton, please phone 0345 464 0079 or drop us an email for a quick quote. We cover Greater London from our Crawley base, Merton included. Merton is one of 764 towns and villages in Greater London where we work for fire rated sealant. Our London page covers work nearby (7 miles or so).
Postcode districts we cover here for fire rated sealant: SW19. Streets in the area include High Path, Pincott Road and Hayward Close, and we cover them all. You will find Merton on the A24, which makes it straightforward to reach with everything needed for fire rated sealant. We also cover Merton Abbey (1 mile east), South Wimbledon (1 mile north-west), Colliers Wood (1 mile east), Tooting Bec (1 mile north-east) and Summerstown (1 mile north). Larger places within reach include London (7 miles north-east), City of Westminster (7 miles north), Marylebone (7 miles north), Kensington (6 miles north), St Pancras (8 miles north) and Shoreditch (9 miles north-east).
Around Merton
Locally, jobs take us to homes and businesses close to The Nelson Arms, Wimbledon School of Art and Wandle Park and the streets around them. Merton’s nearest station is Haydons Road station, roughly 0.8 miles north of the centre. A little further out are Southside Wandsworth (2.8 miles north) and St George's Hospital (1.1 miles north-east). For a walk, there’s Henman Hill and Merton Park Green Walks.
What happens on the day
The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take from a few hours to a few days, depending on the number of gaps and the access, and we tell you how long to leave it before we go. In a London area like Merton, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- We measure every gap and note what it’s in and what passes through.
- Unsuitable material such as ordinary foam or silicone is cut out and the faces cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- We hand over a list of locations and products for your files.
Getting ready for the visit
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
Get a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work.
Related advice
Leave it or put it right?
A quick fill with any sealant to hand is not fire stopping. Fire-rated products are tested in set gap sizes, depths and substrates, so both the product and the method matter. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What you get with us
- Anti-fungal sanitary silicone in wet areas
- 180+ five-star Google reviews
- Fully insured
- ARBOMaster approved applicator
See how sealant jobs are priced and our reviews.
How the job changes by surface
Service penetrations
Service penetrations are where new gaps often appear. We clean out what’s there and reseal to the right depth.
Linear gaps
Head-of-wall gaps are often hidden above suspended ceilings. We work along the whole run.
Should I try it myself first?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Honest limits
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- A wall that is not a fire-resisting element to begin with
- Deciding what fire stopping a building needs
- Certifying a building or signing off its fire safety
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer before booking.
Surfaces we seal
- Plasterboard & masonry
- Door frames
- Linear gaps
- Pipe & cable gaps
- Flats & HMOs
- Service penetrations
Landlord and commercial work in Merton
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
For anyone letting property in or around Merton, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
Also in Merton
Merton: your questions answered
Do you cover Merton for fire rated sealant?
Yes. Our work covers London and the South East, and Merton is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Can parking be tricky for a visit in Merton?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
How do I get a quote for fire rated sealant in Merton?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that usually means someone at home.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
Can tenants book the work?
Of course. Check with your landlord; we can send the quote to them too.