Greater London · England
Fire-rated sealant in Bexleyheath, Greater London
Fire rated sealant in Bexleyheath from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps around pipes and cables through fire-resisting walls
- New service routes left unsealed after building work
- Cracked or shrunken fire-rated sealant
Bexleyheath questions
Do you work for landlords with property near Bexleyheath station?
Yes. We work for landlords and agents as well as householders. You can phone 0345 464 0079 or email us with the details for a clear quote.
Is parking a problem for a job in Bexleyheath?
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.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Can new sealant go over the old?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
Can you work in occupied buildings?
Yes, in flats, HMOs, schools, offices and other buildings, occupied or empty. Tell us how the building is used and we’ll plan around it.
Do you come to Bexleyheath?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland, Bexleyheath included.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
How do I get a quote for fire rated sealant in Bexleyheath?
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 will talk you through it.
Fire rated sealant in Bexleyheath, done properly
Landlords, managing agents and facilities teams use us for the sealant items on a fire risk assessment for buildings in Bexleyheath. If you share the list, we can quote for the gaps that need fire-rated sealant. We work on linear gaps, service penetrations and plasterboard & masonry, and common reasons people get in touch are door frames with gaps between frame and wall and gaps flagged on a fire risk assessment.
London’s offices, shops, hotels, student accommodation and blocks of flats all have joints to look after, whether that is washroom resealing or fire-rated sealant around service openings. Where a building in Bexleyheath needs to stay open, work can be planned outside normal hours.
You are covered for a year from the day we finish. If anything is not right with it, phone 0345 464 0079 or send us an email.
- Location
- Bexleyheath (DA7, DA6, DA16)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Workplaces and buildings in Bexleyheath
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 Trinity Baptist Church, older buildings that have had new heating or wiring often have service gaps worth checking. Letting a property close to Bexleyheath station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
Bexleyheath is about 3 miles south-east of Plumstead, in Greater London. From the centre of Bexleyheath to the outskirts, fire rated sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Bexleyheath is one of 764 towns and villages in Greater London we cover. We also work in London, around 10 miles away.
We cover every part of DA7, DA6 and DA16 for fire rated sealant. We cover properties on Lion Road, Hyde Road and Upton Road and the roads around them. Nearby, we also carry out fire rated sealant in Upton (1 mile west), Crook Log (1 mile west), Blendon (1 mile south-west), Bexley (1 mile south) and Welling (1 mile west). Larger places within reach include London (10 miles west), City of Westminster (13 miles west), Marylebone (13 miles west), Kensington (15 miles west), St Pancras (12 miles north-west) and Shoreditch (10 miles north-west).
Near you in Bexleyheath
Around Bexleyheath, our work takes us to homes and buildings near Danson Park, The Volunteer pub and Bexleyheath Academy and the streets around them. Bexleyheath has its own railway station: Bexleyheath station. Well-known places in the area include Bexley Hospital (within half a mile west) and Bexley Museum (1.2 miles south-east). Green spaces nearby include Summer Hill and Wansunt Pit.
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Different surfaces, different methods
Linear gaps
Gaps along the top of partitions are easy to miss above a ceiling. We work along the whole run leaving no stretch unsealed.
Plasterboard walls
Service holes in plasterboard are often rough and oversized. Where a hole is bigger than the sealant’s tested range, it needs another approach and we’ll flag it.
Leave it or put it right?
Items left open on a fire risk assessment tend to come back at the next review. Having them sealed and recorded now means you can show the action was taken. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Bexleyheath, the repair is bigger than a sealant job.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Why Bexleyheath customers choose us
- Rated 4.9 stars on Google
- Fully insured
- Old sealant always removed completely
- Sanitary silicone with an anti-fungal additive in wet areas
When to call us in Bexleyheath
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.
These are the problems we are asked about most:
- Old fire sealant that has split or come away
- Linear gaps at the head of walls
- Unsealed gaps where pipes and cables go through a wall
- Fire stopping disturbed by later work
If you look after a building such as Upland Primary School, service openings in fire-resisting walls need checking after any refurbishment.
What to look for in a quote
- What the cure time is
- How the surfaces are prepared before sealing
- Are they insured?
- Whether you can choose the colour
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Keep the record of products and locations with your fire safety documents
- Photograph sealed gaps before they’re covered up
- Ask which product was used before you paint
- 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.
Small gaps around services are simple to deal with while there are only a few. Over time, more work adds more holes.
What we do, step by step
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to several days, depending on how many gaps there are and we leave things clean and tidy. For a job in Bexleyheath, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We go through the gaps on your list or survey and check each one’s size and substrate.
- Old or unsuitable sealant is cut out and the gap cleaned.
- Backing or fill is fitted where the product’s tested detail calls for it.
- The sealant goes in to the depth its detail sets, then it’s tooled off.
- Locations and products are noted so you have them on file.
Before we arrive
- Let us know about parking restrictions
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we are working on
Getting a quote
If you’re in Bexleyheath and need fire rated sealant, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
What we can’t put right
It helps to know what we can’t do:
- Large holes that need a different fire-stopping system
- A wall that isn’t a fire-resisting element to begin with
- Fire doors that need new seals, closers or hardware
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.
Surfaces we seal
- Flats & HMOs
- Pipe & cable gaps
- Service penetrations
- Door frames
- Plasterboard & masonry
- Linear gaps