Greater London · England
Hornchurch Marshes Fire Rated Sealant
Professional fire rated sealant in and around Hornchurch Marshes, with every bit of old sealant taken out first and a 12-month guarantee.
- Door frames with gaps between frame and wall
- Open joints along the top of partitions
- Gaps filled with a product that isn’t fire-rated
Fire rated sealant in Hornchurch Marshes
A fire seal relies on being installed the way it was tested: correct depth, correct backing and a product suited to the surfaces. That detail is what we take care over, one gap at a time. If you are dealing with old fire sealant that has split or come away and open gaps behind door architraves, we can help.
London’s offices, shops, hotels, student accommodation and blocks of flats all have joints to look after, from washroom silicone to fire-rated sealant around pipes and cables passing through walls. Where a building in Hornchurch Marshes needs to stay open, work can be planned outside normal hours.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Hornchurch Marshes (RM13, RM9, RM10)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a handful of gaps, and longer for a whole building, depending on the amount of work. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We plan the order of work and access, floor by floor or flat by flat.
- Old, damaged or unsuitable sealant is removed.
- Dust and loose debris are cleaned from each gap.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
How to get a quote
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
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What fire rated sealant looks like in Hornchurch Marshes
Commercial buildings in London often have strict access rules and limited loading, 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, which is often where open fire-stopping gaps are first noticed. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
For landlords with property near Dagenham Dock station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. Hornchurch Marshes is in London, so parking needs planning: let us know about parking bays, permits or a driveway. For site and facilities teams at buildings such as Brook Sixth Form and Academy, gaps opened by contractors for new cabling are a common finding in schools and offices.
Hornchurch Marshes is about 2 miles south of Dagenham, in Greater London. We provide fire rated sealant to householders, landlords and businesses in Hornchurch Marshes and nearby, as part of our work across Greater London. Hornchurch Marshes is one of 764 places in Greater London we cover for fire rated sealant. For nearby work, see our London page, about 11 miles away.
We cover every part of the RM13, RM9 and RM10 postcode area for fire rated sealant. If you need fire rated sealant at a property on Frog Lane, Consul Avenue and Fairlane Road or a nearby road, our applicators can take on the job. If you’re just outside Hornchurch Marshes, we cover Beam Park (1 mile north-east), Dagenham Green (1 mile north-west), Dagenham Dock (1 mile west), South Hornchurch (1 mile north-east) and Rainham (1 mile east). We also work in nearby towns such as London (11 miles west), City of Westminster (14 miles west), Marylebone (13 miles west), St Pancras (12 miles west), Shoreditch (10 miles west) and Walthamstow (9 miles north-west).
Around Hornchurch Marshes
Typical jobs here are in homes near Beam Primary School and Wildspace Conservation Park and the streets around them. For rail, the closest station is Dagenham Dock station, about 1 mile north-west. Nearby you will also find Erith Museum (2.6 miles south) and Erith and District Hospital (2.8 miles south). Green spaces nearby include Crossness Nature Reserve.
FAQs for Hornchurch Marshes
Is Hornchurch Marshes in your area for fire rated sealant?
Yes. Our work covers London and the South East, and Hornchurch Marshes is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Is parking an issue for fire rated sealant in Hornchurch Marshes?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures.
Can you give us a record of the work?
Yes. We note each location and the product that went in so it’s there for the next inspection.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Will you assess my building’s fire safety?
No. That is for a fire risk assessor, designer or building control. We apply fire-rated sealant to the requirements they set.
Is intumescent sealant the same as fire-rated sealant?
Intumescent means it swells when heated. It’s one type of fire-rated sealant; the right one depends on the gap and what passes through it.
Leave it or put it right?
Squirting in whichever sealant is nearest doesn’t make a fire seal. A fire-rated product only performs as tested when it’s installed to its tested detail, so both the product and the method matter. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and give you a clear quote before any work starts.
Why choose Mr Mastic in Hornchurch Marshes
- We leave the area clean and tidy
- 180+ five-star Google reviews
- Old sealant always removed completely
- Domestic, commercial and hotel work
Read what affects the cost and customer reviews.
What affects the quote in Hornchurch Marshes
The quote reflects the job in front of us. We take into account:
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
- The amount of work
- Access and height
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, ring 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
What we need to know
What to tell us when you ask for a quote:
- The rough size of the job
- What’s wrong with the joints now
- Pictures of the joints, sent by email
- How we’d reach the joints
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Different surfaces, different methods
Linear gaps
Head-of-wall gaps are often hidden above suspended ceilings. We work along the whole run.
Flats and HMOs
Working in occupied flats needs some planning. Access to flats and common areas is agreed in advance.
What we cannot put right
In fairness, there are a few things sealant won’t fix:
- Big openings where sealant alone is not the tested solution
- Fire doors that need new seals, closers or hardware
- Fire risk assessments, which need a qualified assessor
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before you book.
Surfaces we seal
- Plasterboard & masonry
- Flats & HMOs
- Pipe & cable gaps
- Door frames
- Service penetrations
- Linear gaps
Also near Hornchurch Marshes
Other services in Hornchurch Marshes
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Look in service cupboards and ceiling voids from time to time
- Photograph sealed gaps before they’re covered up
- File the fire-stopping record where your assessor can find it
- Include fire stopping when you schedule refits
Do not add foam, filler or ordinary sealant over a fire seal. Repairs should use a matching fire-rated product. We can tell you which product we used.
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.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.