Greater London · England
Mottingham Fire Rated Sealant
Fire rated sealant for Mottingham and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Standard silicone or caulk in a fire-stopping gap
- Open joints along the top of partitions
- Seals cut through by electricians, plumbers or data installers
Surface by surface
Service penetrations
A copper pipe, a cable and a plastic pipe can all need different fire-stopping details. We follow the manufacturer’s tested detail for each.
Flats and HMOs
Conversions usually leave a mix of old and new service holes. The gaps on your list are sealed with a fire-rated product and the locations noted.
How we handle fire rated sealant in Mottingham
We don’t assess buildings or decide what fire stopping is needed; that comes from your fire risk assessor, designer or building control. What we do is apply the right product to that specification, properly and neatly. We’re often asked to deal with linear gaps at the head of walls and gaps left after a refit or conversion, across pipe & cable gaps, flats & HMOs and service penetrations.
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 Mottingham, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.
Big or small, you get the same 12-month guarantee in Mottingham and across Greater London.
- Location
- Mottingham (SE9, SE12, BR1)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
FAQs for Mottingham
Can parking be tricky for a visit in Mottingham?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Do you work for landlords with property near Grove Park station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Will there be a smell?
Possibly a little. It fades as the sealant cures.
How long does the job take?
It depends on the size of the job, but as a guide it takes anything from a few hours to several days, depending on how many gaps there are. We’ll give you a better idea when we quote.
Do you do fire sealant around door frames?
Yes, if the gap is within the product’s tested range. We seal the frame-to-wall gap, not the door itself, and we’ll mention anything we notice about the door.
Can I choose the sealant colour?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Why deal with it now?
A quick fill with any sealant to hand is not fire stopping. A fire-rated product only performs as tested when it’s installed to its tested detail, which is why we match the product and the method to each gap. 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 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.
Why choose Mr Mastic in Mottingham
- Tidy, careful work
- Sanitary silicone with an anti-fungal additive in wet areas
- Quality sealants from Arbo and Everbuild
- 20+ years of sealant experience
Take a look at our cost guide or what customers say.
How to look after the new joints
So the new joints stay in good condition:
- File the fire-stopping record where your assessor can find it
- Ask which product was used before you paint
- Include fire stopping when you schedule refits
- Photograph sealed gaps before they’re covered up
Don’t add foam, filler or ordinary sealant over a fire seal. Repairs should use a matching fire-rated product. We can tell you which product we used.
If a fire risk assessment has flagged a gap, don’t leave it for the next one. Have it sealed, then keep the record.
How the visit works
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes from a few hours to a few days, depending on the number of gaps and the access. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Mottingham. A visitor permit or a nearby bay makes the visit run more smoothly.
- We plan the order of work and access, floor by floor or flat by flat.
- Old, damaged or unsuitable sealant is removed.
- Gaps are cleaned of dust and loose material.
- We apply and tool the sealant to the product’s tested detail.
- We record what was done and flag anything that needs a different system.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you are ready, phone 0345 464 0079 or send us an email.
Advice
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Workplaces and buildings in Mottingham
Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange. 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.
If you look after a church, hall or community building such as Jubilee International Church, service openings in its walls need the right fire-rated sealant, as in any building. Managing a site like Marvels Lane Primary School? Then gaps opened by contractors for new cabling are a common finding in schools and offices. Mottingham is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Mottingham is about 1 mile south-west of Eltham, in Greater London. Mottingham gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Mottingham is one of 764 places in Greater London where we work. London is on our list too, about 7 miles from Mottingham.
All of SE9, SE12 and BR1 is within our area for fire rated sealant. Whether your property is on Horley Road, Dorset Road and Albert Road or anywhere close by, we can help. Neighbouring places we cover for fire rated sealant include Chinbrook (1 mile south-west), Grove Park (1 mile west), Coldharbour (1 mile east), Middle Park (1 mile north) and Horn Park (1 mile north-west). Within a short drive, we also cover London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (11 miles north-west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).
Local landmarks in Mottingham
We work in homes and buildings around Colfe's School, Chinbrook Meadows and Haberdashers' Aske's Knights Academy and the streets around them. The nearest railway station is Grove Park station, about 0.7 miles west. A little further out are Greenwich Castle (3.5 miles north-west) and Prefab Museum (1.7 miles west). Not far away are Summer Hill and The Tarn.
Places near Mottingham
More services for Mottingham
Landlord and commercial work in Mottingham
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Landlords and letting agents in Mottingham can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
What we cannot put right
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Assessing a building’s fire safety
- Sign-off of the building, which sits with building control or your assessor
- Doors that are not fire doors in the first place
If in doubt, call 0345 464 0079 or email us and we will say what we think before you book.
What we seal
- Pipe & cable gaps
- Flats & HMOs
- Door frames
- Linear gaps
- Plasterboard & masonry
- Service penetrations