Greater London · England
Hillingdon Fire Rated Sealant
Intumescent and fire-rated sealant around gaps, frames and service penetrations in Hillingdon, with a 12-month guarantee on every job. Ask us for a quote.
- Open gaps behind door architraves
- Standard silicone or caulk in a fire-stopping gap
- Fire seals that have cracked with movement
About our fire rated sealant in Hillingdon
Filling a fire-stopping gap with standard silicone or caulk doesn’t make it fire-rated. Anything unsuitable comes out first and reseal with a fire-rated product tested for that kind of gap. We are often asked to deal with unsealed gaps where pipes and cables go through a wall and joints picked up in a fire-stopping survey, on plasterboard & masonry, pipe & cable gaps and service penetrations.
In London, a commercial job often starts with access: loading bays, building rules and lifts. For a building in Hillingdon, we agree timings and access before anything starts.
There’s a 12-month guarantee on every job.
- Place
- Hillingdon (UB10, UB8, UB9, HA4)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Fire rated sealant in Hillingdon: local notes
Hillingdon has hotels and guest accommodation in and around it. Hotel work can be planned room by room, with out-of-hours working where needed. Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange.
Letting a property close to West Drayton station? Then any gap left by new services in shared walls should be closed with a fire-rated product. If you look after a building such as Abbotsfield School for Boys, gaps opened by contractors for new cabling are a common finding in schools and offices.
Hillingdon is about 2 miles north-west of Hayes, in Greater London. Wherever you are in the UB10 postcode area, we can carry out fire rated sealant at your property. Across Greater London, we cover 764 places, and Hillingdon is one of them. We also work in London, about 15 miles from Hillingdon.
We cover every part of UB10, UB8, UB9 and HA4 for fire rated sealant. Whether your property is on The Larches, Brampton Road and Clifton Gardens or a nearby road, we can help. With the B465 and B467 close by, Hillingdon is simple for us to get to. Other places close to Hillingdon include Uxbridge (1 mile west), Ickenham (1 mile north), Cowley (2 miles south-west), Yiewsley (2 miles south-west) and Hayes (2 miles south-east). Larger places within reach include London (15 miles east), City of Westminster (13 miles east), Marylebone (13 miles east), Kensington (11 miles east), St Pancras (14 miles east) and Hampstead (12 miles east).
Near you in Hillingdon
Typical jobs here are in homes near Highfield Primary School, Norman Leddy Memorial Gardens and Oak Wood School and the streets around them. The closest station to Hillingdon is West Drayton station, roughly 2.2 miles south-west of the centre. Nearby you will also find Hillingdon Museum and Archives Services (1.4 miles north-west) and Hillingdon Hospital (1 mile south-west). Open spaces near Hillingdon include Northala Fields and Gutteridge Wood and Meadows.
What we do, step by step
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before any work begins. The work usually takes a few hours for a handful of gaps, and longer for a whole building. In a London area like Hillingdon, 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.
- 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 gap cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- Every location is recorded with the product used for your files.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know if you’ve seen damp or leaks
- Clear the area around the work
Get a quote
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
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Hillingdon: your questions answered
Is parking an issue for fire rated sealant in Hillingdon?
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.
Do you work in hotels near Hillingdon?
Yes, hospitality work, including hotels, is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Do you certify the fire stopping?
We do not certify fire stopping or quote ratings. Our part is installing the specified product to its tested details and list the locations and products for you.
Do you cover Hillingdon?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland, and that includes Hillingdon.
Will you assess my building’s fire safety?
No. We follow the requirements from your assessor, designer or building control.
Will we have a record of what was sealed?
Yes. Every gap we seal is listed with the product used so it’s there for the next inspection.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do you guarantee your work?
Yes. Every job comes with our 12-month guarantee.
Other services in Hillingdon
Leave it or put it right?
Leaving a gap until a refurbishment comes round can mean years with it open. Sealing the gap now is a contained job on its own that doesn’t depend on other work. In a flat in Hillingdon, 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.
Leaving a failed joint generally makes the job bigger, not smaller. If you are unsure, phone 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why choose Mr Mastic in Hillingdon
- We leave the area clean and tidy
- Arbo and Everbuild products
- We’re fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at our cost guide or what customers say.
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Do you need fire rated sealant in Hillingdon?
Sealant applied too thin, without the backing its detail needs, or onto dust will not perform as it was tested. We see plenty of fire stopping that was hurried.
If you can see any of these, it’s time to have the joints looked at:
- Old fire sealant that has split or come away
- Open gaps behind door architraves
- Gaps left after a refit or conversion
- Gaps filled with a product that is not fire-rated
Community buildings like Church of St John are part of the picture too: service openings in its walls need the right fire-rated sealant, as in any building.
Comparing quotes
- Whether you can choose the colour
- The length of the guarantee
- Whether VAT is included
- What insurance they hold
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Walls or floors that weren’t built to resist fire
- Fire doors that need new seals, closers or hardware
- Deciding what fire stopping a building needs
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Surfaces we seal
- Plasterboard & masonry
- Flats & HMOs
- Door frames
- Linear gaps
- Pipe & cable gaps
- Service penetrations
Looking after it afterwards
Aftercare is simple:
- Look in service cupboards and ceiling voids from time to time
- Do not paint over fire sealant until it has cured
- Keep the record of products and locations with your fire safety documents
- Report cracked or damaged seals as soon as you notice them
Look at the sealed gaps as part of your routine walk-rounds. Watch for cracking, gaps or seals that have been disturbed and get them seen to.
It’s easiest to seal gaps while they’re few and easy to reach. Over time, more work adds more holes and the list grows.
Different surfaces, different methods
Plasterboard walls
Holes in plasterboard are often cut roughly for services. Where a hole is bigger than the sealant’s tested range, it needs another approach, and we’ll tell you.
Flats and HMOs
Working in occupied flats needs some planning. Access to flats and common areas is agreed in advance to keep disruption down.