Greater London · England
Westerham Fire Rated Sealant
Fire rated sealant across Westerham and nearby, with old sealant always removed completely.
- Joints picked up in a fire-stopping survey
- Cracked or shrunken fire-rated sealant
- Door frames with gaps between frame and wall
About our fire rated sealant in Westerham
Fire stopping only performs as intended if it’s done to the detail: the right depth, the right backing and the right product for the substrate. That detail is what we take care over, gap by gap. Common call-outs are for linear gaps at the head of walls and sealant items on a fire risk assessment action list, on linear gaps, pipe & cable gaps and service penetrations.
In London, a commercial job often starts with access: loading bays, building rules and lifts. Timings and access are agreed with the building before work starts in Westerham, and room-by-room programmes can be planned where needed.
Every job is covered by our one-year guarantee, wherever you are in Greater London.
- Place
- Westerham (TN16)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Do not fill fire-stopping gaps with ordinary foam or silicone
- Store the list of sealed gaps with your building paperwork
- Take pictures of fire stopping before ceilings or boxing go back
- Don’t paint over fire sealant until it has cured
Keep the record we give you with the building’s fire safety documents. It saves time at the next inspection or assessment.
It’s easiest to seal gaps while they’re few and easy to reach. Over time, more work adds more holes and the job gets bigger.
Fire rated sealant around Westerham
Westerham has hotels and guest accommodation in and around it. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange.
Rented homes near Hurst Green station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. Westerham is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Westerham is about 5 miles west of Sevenoaks, in Greater London. For fire rated sealant in and around Westerham, please phone 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Greater London, Westerham included. Westerham is one of 764 towns and villages in Greater London where we work. For nearby work, see our Crawley page.
Postcode districts we cover here for fire rated sealant: TN16. Streets in the area include Market Square, London Road and High Street. You’ll find Westerham on the A25 and B2024, which makes it straightforward to reach with everything needed for fire rated sealant. We also cover Force Green (1 mile north), Moorhouse Bank (1 mile south-west), Goodley Stock (2 miles south), The Chart (2 miles south-west) and South Street (2 miles north-west). We also work in nearby towns such as Orpington (8 miles north), New Cross (15 miles north), Thornton Heath (12 miles north-west), Croydon (10 miles north-west), East Dulwich (15 miles north-west) and Plumstead (15 miles north).
What’s near Westerham
Around Westerham, our work takes us to homes and buildings near The Olde House At Home Public House, among other places. The nearest railway station is Hurst Green station, about 3.4 miles south-west of the centre. Well-known places in the area include Tandridge Priory (2.2 miles south-west). The countryside around Westerham includes Betsom's Hill and Dryhill Nature Reserve.
How the visit works
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the job takes a few hours for a handful of gaps, and longer for a whole building in most cases. In a London area like Westerham, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- Before starting, we go through the specification or action list with you.
- Each gap is measured and its substrate and service noted.
- Unsuitable material such as ordinary foam or silicone is cut out and the gap cleaned.
- We fit backing where needed and apply the fire-rated sealant to depth.
- We hand over a list of locations and products for your records.
Getting ready for the visit
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
Get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will talk you through the work and give you a clear quote.
Related advice
Questions from Westerham
Can parking be tricky for a visit in Westerham?
Parking in Westerham, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Do you work for landlords with property near Hurst Green station?
Yes. We work for letting agents and landlords as well as householders. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
What should I tell you?
Let us know what needs doing and where. We’ll ask anything else we need to know.
What does intumescent mean?
An intumescent material expands when it’s heated. Many fire-rated sealants work this way, but not all and which one is used depends on the job.
Do you guarantee your work?
Yes. All our work carries a 12-month guarantee.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
What we’re called out for in Westerham
A lot of fire stopping is out of sight: above ceilings, inside risers and behind panels. Out of view, damage sits unnoticed until someone inspects.
The most common problems we see are:
- Open joints along the top of partitions
- Seals cut through by electricians, plumbers or data installers
- Gaps left after a refit or conversion
- Unsealed gaps around fire door frames
If you look after a church, hall or community building such as Church of St Mary the Virgin, service openings in its walls need the right fire-rated sealant, as in any building.
Before booking anyone
- What the cure time is
- What happens if they find a problem under the old sealant
- Whether they’re fully insured
- The length of the guarantee
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
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 fails, we can still redo it.
Towns and villages near Westerham
Also in Westerham
Landlord and commercial work in Westerham
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for.
What the job involves on each surface
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.
Flats and HMOs
In flats and HMOs, the walls and floors between homes and common areas need sealing where services pass through. We seal the gaps your assessor has identified.
Why it’s worth doing now in Westerham
An open gap in a fire-resisting wall is a route for smoke and fire. A proper seal lets the wall do its job again, and the sealing itself is often a contained piece of work. In a flat in Westerham, 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.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why choose Mr Mastic in Westerham
- We leave the area clean and tidy
- Old sealant always removed completely
- Anti-fungal silicone where joints get wet
- Homes, businesses and hotels
Take a look at how sealant jobs are priced or customer reviews.