Greater London · England
Fire Rated Sealant in Bexley
Our applicators work in Bexley on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Damaged fire sealant left by other trades
- Cracked or shrunken fire-rated sealant
- Gaps filled with a product that isn’t fire-rated
Looking after it afterwards
To keep the joints looking good and working properly:
- Don’t fill fire-stopping gaps with ordinary foam or silicone
- Ask which product was used before you paint
- Report cracked or damaged seals as soon as you notice them
- Ask every contractor to reseal any fire stopping they disturb
File the record of locations and products with your fire safety paperwork. It saves time at the next inspection or assessment.
An open gap isn’t only a fire issue: they also let noise, draughts and sometimes pests through. Dealing with them early helps with all of these.
How we handle fire rated sealant in Bexley
Bigger jobs can be worked through in stages, flat by flat or floor by floor. It gives you a list to keep with the building’s fire safety documents. We are often asked to deal with fire seals that have cracked with movement and gaps where walls meet ceilings or slabs, on pipe & cable gaps, service penetrations and linear gaps.
London’s offices, shops, hotels, student accommodation and blocks of flats all have joints to look after, whether that’s washroom resealing or fire-rated sealant around service openings. Where a building in Bexley needs to stay open, work can be planned outside normal hours.
There’s a 12-month guarantee on every job.
- Location
- Bexley (DA5, DA6, DA14, DA1)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Bexley
Also in Bexley
What affects the quote in Bexley
There’s no set price list. What we look at:
- Whether there’s mould to deal with
- Any working-time requirements on site
- The number of rooms or windows
- The size of the job
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Asking for a quote
To make quoting easier, let us know:
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
- Any previous sealing or DIY work
- What’s wrong with the joints now
Need a quote? Please phone 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear quote before we start.
Leave it or put it right?
If an assessor has flagged gaps, it makes sense to close them before the next review. Having them sealed and recorded now gives you evidence that the item was dealt with. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Bexley
- Every job guaranteed for a year
- 180+ five-star Google reviews
- Over 20 years’ experience
- Arbo and Everbuild products
Take a look at what affects the cost or what customers say.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Do you need fire rated sealant in Bexley?
Lots of unsealed gaps appear long after the building was completed. Electricians, plumbers and data installers drill through walls and ceilings and the hole they leave does not always get resealed.
Any of these means the joints need attention:
- Joints picked up in a fire-stopping survey
- Unsealed gaps where pipes and cables go through a wall
- New service routes left unsealed after building work
- Standard silicone or caulk in a fire-stopping gap
As a London address, Bexley can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Questions to ask before booking
- How the joint is cleaned and prepared
- Whether you can choose the colour
- Whether the sealant suits the joint
- When the joint can take water or movement
What fire rated sealant looks like in Bexley
Bexley 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. 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, which is often where open fire-stopping gaps are first noticed. We work to the specification you’re given, installing the product to its tested details.
If you let a flat or house near Bexley station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. If you look after a building such as Old Bexley Church of England School, service openings in fire-resisting walls need checking after any refurbishment.
Bexley is about 3 miles east of Eltham, in Greater London. We carry out fire rated sealant for homeowners, landlords and businesses in Bexley and the surrounding area. Bexley is one of 764 towns and villages in Greater London we cover. We also work in London, around 11 miles away.
Our applicators cover all of DA5, DA6, DA14 and DA1 for fire rated sealant and the streets around it. Local streets include Bexley High Street, Camden Road and The North Glade. Being close to the A2018 and B2210, Bexley is easy for our applicators to reach for fire rated sealant. Close by, we work in Blendon (1 mile north-west), North Cray (1 mile south), Bexleyheath (1 mile north), Upton (1 mile north) and Coldblow (1 mile east). We also work in nearby towns such as London (11 miles west), City of Westminster (13 miles west), Marylebone (13 miles north-west), Kensington (15 miles west), St Pancras (12 miles north-west) and Shoreditch (11 miles north-west).
Landmarks near Bexley
Locally, jobs take us to homes and businesses close to St Columba's Catholic Boys' School, Danson Park and Townley Grammar School and the streets around them. For rail, the closest station is Bexley station, roughly 0.6 miles east. A little further out are Broadway Shopping Centre (1 mile north-east) and Bexley Museum (1.1 miles east). The countryside around Bexley includes Summer Hill and Wansunt Pit.
When something else is needed
We’d rather tell you now than do work that won’t last, so these are the limits:
- Big openings where sealant alone is not the tested solution
- Issuing a fire rating or certificate for a building
- Walls or floors that weren’t built to resist fire
If in doubt, ring 0345 464 0079 or email us and we will say what we think.
What we seal
- Linear gaps
- Door frames
- Service penetrations
- Plasterboard & masonry
- Pipe & cable gaps
- Flats & HMOs
FAQs for Bexley
Do you take on hotel work around Bexley?
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.
Can parking be tricky for a visit in Bexley?
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.
Can you quote for more than one area?
Of course. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
How do I get a quote for fire rated sealant in Bexley?
It depends on the job, so we quote each one individually. For a quick quote, ring 0345 464 0079 or drop us an email with a short description of the job.
Is there a guarantee?
Yes, for a year. If there’s a problem with our work in that time, tell us and we’ll put it right.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can I use normal mastic around a pipe through a fire wall?
No. Standard sealants aren’t made or tested to stop fire. We cut it out and reseal with a fire-rated product.
How the visit works
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes from a few hours to a few days, depending on the number of gaps and the access in most cases. In Bexley, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start with the survey or action list, checking the size and surfaces of every gap.
- Anything that is not fit for the job comes out, and the gap is cleaned.
- We put in whatever backing or fill the product detail specifies.
- We apply the fire-rated or intumescent sealant to the specified depth and tool it.
- Finally, we list where we worked and what we used, for your records.
Before we arrive
- Move anything stored near the joints
- Keep children and pets away from the work area
- Tell us about any water getting in
How to get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or email us.