Greater London · England
Fire Rated Sealant in Hornchurch
Intumescent and fire-rated sealant around gaps, frames and service penetrations for householders, landlords and businesses in Hornchurch. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps left after a refit or conversion
- Standard silicone or caulk in a fire-stopping gap
- Old fire sealant that has split or come away
Fire rated sealant in Hornchurch
Fire-rated sealant closes the gaps around pipes, cables and frames where they pass through a fire-resisting wall or floor. We apply intumescent and fire-rated sealants to the manufacturer’s tested details for each gap, with a record of the products and locations if you need one. If you have open joints along the top of partitions and gaps filled with a product that isn’t fire-rated, we can help, whatever the surface.
Across London, offices, shops, hotels, student halls and blocks of flats all need sealant work from time to time, from washroom silicone to fire-rated sealant around pipes and cables passing through walls. Out-of-hours working can be arranged where a building in Hornchurch cannot close.
Your job is guaranteed for a year, as with all our work.
- Place
- Hornchurch (RM12, RM11, RM14, RM1)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Hornchurch
Sealant is not the fix for every opening. Large holes, cable bundles and plastic pipes can call for batts, collars or wraps. If a gap isn’t suitable for sealant, we’ll tell you. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Hornchurch, the repair is bigger than a sealant job.
What you pay reflects the work, not guesswork. That is why we ask about the job first.
Why choose Mr Mastic in Hornchurch
- ARBOMaster approved applicator
- 20+ years of sealant experience
- We are fully insured
- Neat joints and a tidy finish
How to look after the new joints
So the new joints stay in good condition:
- Don’t fill fire-stopping gaps with ordinary foam or silicone
- Take photos of fire stopping before ceilings or boxing go back
- Check whether a sealant can be painted before decorating over it
- Look in service cupboards and ceiling voids from time to time
Follow the cure time we give you before decorating over the sealant. Some fire-rated sealants can be painted and some cannot, so ask us which we used.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Closing it is usually a straightforward job.
Workplaces and buildings in Hornchurch
Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange. Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, 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.
Community buildings like Saint George's Church are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking. For site and facilities teams at buildings such as Langtons Infant School, service openings in fire-resisting walls need checking after any refurbishment.
Hornchurch is about 6 miles south-west of Brentwood, in Greater London. We carry out fire rated sealant for homeowners, landlords and businesses in Hornchurch, as part of our work across Greater London. Our area takes in 764 places across Greater London, large and small. We also work in London, about 14 miles from Hornchurch.
All of RM12, RM11, RM14 and RM1 is covered for fire rated sealant. Whether your property is on High Street, The Avenue and Stanley Road or a nearby road, we can help. Hornchurch sits on or near the A125. Close by, we work in Upminster Bridge (1 mile east), Heath Park (1 mile north-west), Emerson Park (1 mile north-east), Hacton (2 miles south) and Ardleigh Green (2 miles north). Further out, we also cover London (14 miles west), St Pancras (14 miles west), Shoreditch (13 miles west), Walthamstow (10 miles west), Hoxton (13 miles west) and Whitechapel (13 miles west).
Around Hornchurch
Locally, jobs take us to homes and businesses close to Abbs Cross Academy and Arts College, J.J. Moon's pub and St. Andrew's Park, among other places. Hornchurch’s nearest station is Emerson Park station, about 0.7 miles north of the centre. Well-known places in the area include Upminster Tithe Barn Museum of Nostalgia (1.9 miles east) and The Brewery (1.8 miles north-west). For a walk, there’s Hornchurch Cutting.
How the job changes by surface
Linear gaps
Some linear gaps have to cope with movement as well as fire. We choose a product and depth that suit the gap and the movement.
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 will flag it.
Hornchurch questions
Is parking a problem for a job in Hornchurch?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Do you cover Hornchurch for fire rated sealant?
Yes. We work across London and the South East, and Hornchurch is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.
What should I tell you?
Tell us what needs doing and where, with pictures by email if possible. We will ask anything else we need to know.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Where do you work from?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
How it works
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take a few hours for a handful of gaps, and longer for a whole building. In a London area like Hornchurch, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- Access to each area is agreed so the work can run in order.
- Old, damaged or unsuitable sealant is removed.
- Dust and loose debris are cleaned from each gap.
- We apply and tool the sealant to the product’s tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we’re working on
Ask for 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’ll send you a clear quote before any work starts.
Advice
How we quote for fire rated sealant
There’s no set price list. The quote depends on:
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- Which sealant suits the joint
Doing several joints on one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Helping us quote
You don’t need to know the technical terms. It helps if you can tell us:
- If someone has resealed it before
- How we’d reach the joints
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.
Also near Hornchurch
What else we do in Hornchurch
Should I try it myself first?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
A careful DIYer can reseal a simple joint, 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.
Do you need fire rated sealant in Hornchurch?
Door frames are a common weak spot. The architrave hides the gap between frame and wall, so it’s easy to leave unsealed when doors are changed.
Most people get in touch after spotting something like this:
- Cracked or shrunken fire-rated sealant
- Ordinary sealant used where a fire-rated product was needed
- Unsealed gaps around fire door frames
- Linear gaps at the head of walls
As a London address, Hornchurch can be tricky for parking: let us know about parking bays, permits or a driveway.
What your quote should include
- What preparation is included
- What guarantee comes with the work
- What product goes in the joint
- Who does the work, and how experienced they are