Hertfordshire · England
Fire-rated sealant in Bromley, Hertfordshire
Problem with your fire-stopping gaps in Bromley? We cut out the old, prepare the joints and apply the right sealant.
- Standard silicone or caulk in a fire-stopping gap
- Door frames with gaps between frame and wall
- Gaps around pipes and cables through fire-resisting walls
Fire rated sealant for homes and businesses in Bromley
We do not assess buildings or decide what fire stopping is needed; your assessor, designer or building control sets that out. What we do is apply the right product to that specification, properly and neatly. Common call-outs are for seals cut through by electricians, plumbers or data installers and door frames with gaps between frame and wall, across pipe & cable gaps, linear gaps and flats & HMOs.
For a small place like Bromley, the journey and timings are agreed in advance, so the job can fit around bookings, guests or opening times where possible.
Big or small, you get the same one-year guarantee.
- Where
- Bromley (SG11)
- Region
- Hertfordshire
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens if it’s left?
Doing it once, properly, beats doing it twice. Work that doesn’t follow the tested detail may have to come out again once someone inspects it. Where a wall is exposed, as many are in small places like Bromley, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
Why us?
- Experience in homes, commercial sites and hotels
- 180+ five-star Google reviews
- ARBOMaster approved applicator
- Old sealant always removed completely
Take a look at how sealant jobs are priced or what customers say.
How it works
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the job takes a few hours for a handful of gaps, and longer for a whole building in most cases. Somewhere like Bromley needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- 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
- For indoor joints, keep the area dry beforehand if you can
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
Get a quote
To get a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Related advice
Workplaces and buildings in Bromley
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 are given, installing the product to its tested details.
In and around Bromley, as anywhere, good fire rated sealant starts with a clean, dry, properly prepared joint.
Bromley is about 4 miles west of Bishop's Stortford, in Hertfordshire. From the centre of Bromley to the outskirts, we cover fire rated sealant for every kind of property. Bromley is one of 381 places in Hertfordshire where we work. We also work in Chelmsford, around 21 miles away.
Postcode districts we cover here for fire rated sealant: SG11. If you are just outside Bromley, we cover Standon (1 mile north-west), Hadham Ford (1 mile east), Much Hadham (1 mile south-east), Puckeridge (2 miles north-west) and Hadham Cross (2 miles south). Within a short drive, we also cover Stevenage (10 miles west), Bishop's Stortford (4 miles east), Welwyn Garden City (12 miles south-west), Hitchin (15 miles west), Hoddesdon (9 miles south) and Cheshunt (12 miles south).
What’s near Bromley
In Bromley, that means homes and buildings near The Fox And Hounds pub, among other places. The closest station to Bromley is Bishops Stortford station, about 4.8 miles east. Other landmarks nearby include Henry Moore Studios and Gardens (2.8 miles south-east) and Moated mound (2.7 miles north-east).
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- File the fire-stopping record where your assessor can find it
- Keep pictures of seals that will be hidden
- Ask which product was used before you paint
- Make resealing part of every contractor’s brief
Look at the sealed gaps as part of your routine walk-rounds. Look for cracks, gaps or sealant that has been cut or pulled out and have them put right.
Leave a fire-stopping gap open and smoke can move through the building much more easily. Sealing it early is a simple step to take.
Landlord and commercial work in Bromley
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
Towns and villages near Bromley
More services for Bromley
FAQs for Bromley
Can you help a landlord with a rental near Bishops Stortford station?
Yes. We work for landlords and agents as well as householders, and several properties can go on one quote. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Can you do fire rated sealant in Bromley?
Yes. Our work covers London and the South East, and Bromley is part of that. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Can I choose the sealant colour?
Yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before any work starts.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Bromley and the rest of Hertfordshire, along with the rest of our area.
Do you work in flats, HMOs and commercial buildings?
Yes, in flats, HMOs, schools, offices and other buildings, occupied or empty. Tell us how the building is used and we will plan around it.
What’s the difference between intumescent and fire-rated sealant?
Intumescent means it swells when heated to help seal the gap. Intumescent sealants are one kind of fire-rated sealant; which product suits depends on the gap, the substrate and the service.
Do the sealants smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
When to call us in Bromley
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 particularly when it was the last job before handover.
Look out for these signs:
- Open joints along the top of partitions
- Damaged fire sealant left by other trades
- Door frames with gaps between frame and wall
- Gaps around pipes and cables through fire-resisting walls
If you let a flat or house near Bishops Stortford station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
What to look for in a quote
- Who does the work, and how experienced they are
- The length of the guarantee
- How the joint is cleaned and prepared
- What happens if the job turns out different
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
How we quote for fire rated sealant
Some jobs are bigger than they look, and some smaller. The main factors:
- How many areas need sealing
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
- The product the joint needs
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Any access issues, like height or stairs
- Any previous sealing or DIY work
- Where the property is
- What’s wrong with the joints now
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, phone 0345 464 0079 or email us.