Greater London · England
Fire-rated sealant in Middle Park, Greater London
We cover Middle Park for intumescent and fire-rated sealant around gaps, frames and service penetrations. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Gaps around pipes and cables through fire-resisting walls
- Linear gaps at the head of walls
- Seals cut through by electricians, plumbers or data installers
Fire rated sealant in Middle Park, done properly
Fire-rated sealant closes the gaps around pipes, cables and frames where they pass through a fire-resisting wall or floor. Each gap is sealed to the product maker’s tested detail for its size and substrate. Common call-outs are for fire stopping disturbed by later work and old fire sealant that has split or come away, on pipe & cable gaps, flats & HMOs and plasterboard & masonry.
Commercial work in London comes with its own logistics: loading restrictions, building rules and tight access. Timings and access are agreed with the building before work starts in Middle Park, and room-by-room programmes can be planned where needed.
Big or small, it’s backed by our one-year guarantee.
- Where
- Middle Park (SE9, SE12)
- Region
- Greater London
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Signs you need fire rated sealant in Middle Park
Gaps also open up as buildings move: cracked or debonded sealant leaves an open route through the wall. Knocks, maintenance and building work damage it further.
The most common problems we see are:
- Ordinary sealant used where a fire-rated product was needed
- Gaps flagged on a fire risk assessment
- Open joints along the top of partitions
- Unsealed gaps around fire door frames
If you let a flat or house near Mottingham station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
What to look for in a quote
- What product goes in the joint
- How hidden problems are handled
- Who turns up on the day
- Are they insured?
What affects the cost of fire rated sealant
You will get a clear quote before any work starts. It takes into account:
- The old material and how stubborn it is
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
What we need to know
To help us quote quickly, please include:
- Pictures of the joints, sent by email
- If someone has resealed it before
- The type of property
- Roughly how big the job is
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before any work starts.
What the job involves on each surface
Linear gaps
Linear gaps run along the head of walls, at floor edges and between panels. They’re sealed with a fire-rated sealant over backing where the detail calls for it.
Plasterboard walls
In plasterboard walls, the condition of the board edge matters. Crumbling edges are cleaned back before the sealant goes in.
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Store the list of sealed gaps with your building paperwork
- Report cracked or damaged seals as soon as you notice them
- Keep general-purpose foam and caulk away from fire-stopping gaps
- Make resealing part of every contractor’s brief
Leave the sealant to cure fully before painting near it. Not every fire-rated sealant takes paint and we will tell you which one you have.
Leave a fire-stopping gap open and smoke can move through the building much more easily. Sealing it early is a simple step to take.
What fire rated sealant looks like in Middle Park
Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged 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.
For buildings such as Church of St Saviour, service openings in its walls need the right fire-rated sealant, as in any building. Schools such as Middle Park Primary School are buildings too, and gaps opened by contractors for new cabling are a common finding in schools and offices.
Middle Park is about 1 mile west of Eltham, in Greater London. Every kind of property in Middle Park is covered for fire rated sealant, old or new, large or small. The work is guaranteed for a year. Our Greater London coverage runs to 764 places, Middle Park among them. Our London page covers work nearby.
Our applicators cover all of the SE9 and SE12 postcode area for fire rated sealant. Local streets include Horsa Road, Court Road and Sidcup Road, and we cover them all. Middle Park is on the A20, so it’s easy for us to get to. Neighbouring places we cover for fire rated sealant include Horn Park (1 mile west), Eltham (1 mile east), Mottingham (1 mile south), Well Hall (1 mile north-east) and Chinbrook (1 mile south). Further out, we also cover London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (9 miles north-west), Kensington (11 miles west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).
Local landmarks in Middle Park
We work in homes and buildings around Harris Academy Greenwich, Horn Park and The Banker's Draft pub. For rail, the closest station is Mottingham station, about 0.5 miles south-east of the centre. A little further out are Greenwich Castle (2.9 miles north-west) and Prefab Museum (1.9 miles west). Not far away are Summer Hill and The Tarn.
Also near Middle Park
Also in Middle Park
When something else is needed
To be straight with you, some problems need a different trade:
- Sign-off of the building, which sits with building control or your assessor
- Fire doors that need new seals, closers or hardware
- Big openings where sealant alone is not the tested solution
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Pipe & cable gaps
- Service penetrations
- Plasterboard & masonry
- Door frames
- Flats & HMOs
- Linear gaps
How it works
You don’t need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a few hours for a handful of gaps, and longer for a whole building for a typical job. For a job in Middle Park, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- We go through the gaps on your list or survey and check each one’s size and substrate.
- We remove any old or unsuitable filler and clean the gap.
- Where the tested detail needs backing or fill, we fit it.
- We apply the fire-rated or intumescent sealant to the specified depth and tool it.
- We record the locations and products used for your records.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Try not to wet indoor joints just before the visit
- On commercial sites, let us know about site rules
Getting a quote
For fire rated sealant in Middle Park, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
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Questions from Middle Park
Can you do fire rated sealant in Middle Park?
Yes. Our work covers London and the South East, and Middle Park is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
Can parking be tricky for a visit in Middle Park?
Parking in Middle Park, 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.
Can I use normal mastic around a pipe through a fire wall?
No. Standard sealants are not made or tested to stop fire. If it’s been used, we remove it and use the right product.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. We remove it all first.
Can you work in occupied buildings?
Yes, in flats, HMOs, schools, offices and other buildings, occupied or empty. Let us know the building’s hours and we will plan the work to suit.
Can you match the sealant colour?
In most cases you can choose. We will explain which colours are available and agree one before work begins.
How long does fire rated sealant take?
As a guide, most jobs take anything from a few hours to several days, depending on how many gaps there are. Larger jobs naturally take longer, and we will tell you how long to expect.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Middle Park, along with the rest of our area.
What happens if it’s left?
An open gap in a fire-resisting wall is a route for smoke and fire. Sealing it properly restores what the wall was there to do, and the work involved is often modest. In a flat in Middle Park, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear quote for the lot.
Why book with us
- A 12-month guarantee on all work
- Fully insured
- We leave the area clean and tidy
- Domestic, commercial and hotel work
Take a look at what affects the cost and what customers say.