Essex · England
Mountnessing Fire Rated Sealant
Specialist fire rated sealant for Mountnessing: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Open gaps behind door architraves
- Old fire sealant that has split or come away
- Gaps around pipes and cables through fire-resisting walls
What we cannot put right
It helps to know what we cannot do too:
- Assessing a building’s fire safety
- Openings too large for sealant, which need batts, boards or another system
- Doors that are not fire doors in the first place
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Pipe & cable gaps
- Plasterboard & masonry
- Service penetrations
- Door frames
- Linear gaps
- Flats & HMOs
Fire rated sealant in Mountnessing, done properly
Door frame gaps, linear joints and holes around services all have their own details. We check the size and the substrate before choosing the product, then apply it to the depth its tested detail calls for. If you have cracked or shrunken fire-rated sealant and fire stopping disturbed by later work, we can help, on service penetrations, plasterboard & masonry and linear gaps alike.
In a village or hamlet like Mountnessing, commercial work is more likely to be a pub, a farm shop, holiday lets or a village hall than an office block. Each still needs sound sealant in its washrooms and kitchens, and fire-rated joints where services pass through walls.
A 12-month guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Mountnessing (CM15)
- Wider area
- Essex
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
The process
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and clear up. It normally takes from a few hours to a few days, depending on the number of gaps and the access. For a village or hamlet like Mountnessing, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- We record what was done and flag anything that needs a different system.
Getting ready for the visit
- Mention any tricky access
- Clear items away from the joints we’re working on
- Keep pets and children clear of the area while we work
Getting a quote
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Advice
Mountnessing questions
Can you do fire rated sealant in Mountnessing?
Yes. Our work covers London and the South East, and Mountnessing is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
I let a flat near Ingatestone station. Can you help?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Can you seal over the old sealant?
No. We remove every bit of old sealant first, so the new sealant bonds properly.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
Are you insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Do you seal gaps around fire door frames?
Yes, if the gap is within the product’s tested range. We seal the frame-to-wall gap, not the door itself.
Do you carry out fire risk assessments?
No. We work from the specification you give us, and apply each product to its tested details.
Commercial buildings in Mountnessing
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.
If you look after a building such as Mountnessing Church of England Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices.
Mountnessing is about 3 miles north-east of Brentwood, in Essex. Wherever you are in the CM15 postcode area, we can carry out fire rated sealant at your property. Across Essex, we cover 644 places, and Mountnessing is one of them. You can also see our page for Chelmsford, roughly 8 miles from Mountnessing.
Here we cover the CM15 postcode area for fire rated sealant. Local streets include Church Road, Roman Close and Roman Road, and we cover them all. We also cover Swallows Cross (1 mile north-west), Green Street (1 mile north), Ingatestone (1 mile north-east), Buttsbury (2 miles east) and Hutton (2 miles south). Larger places within reach include Chelmsford (8 miles north-east), Basildon (7 miles south-east), Harlow (13 miles north-west), Brentwood (3 miles south-west), Maldon (15 miles east) and Canvey Island (13 miles south-east).
Near you in Mountnessing
We work in homes and buildings around Shenfield High School, Hutton Country Park and George and Dragon pub and the streets around them. The nearest railway station is Ingatestone station, roughly 1.6 miles north-east of the centre. Nearby you’ll also find Brentwood Community Hospital (2.7 miles south-west). The countryside around Mountnessing includes Norsey Wood.
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 gives you evidence that the item was dealt with. In a small place like Mountnessing, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why choose Mr Mastic in Mountnessing
- 180+ five-star Google reviews
- Full insurance on every job
- ARBOMaster approved applicator
- Old sealant always removed completely
Read our cost guide and what customers say.
Landlords, agents and businesses in Mountnessing
If you manage several properties in or around Mountnessing, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Nearby places to Mountnessing
More services for Mountnessing
Common problems we fix in Mountnessing
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.
Look out for any of the following:
- Damaged fire sealant left by other trades
- New service routes left unsealed after building work
- Gaps around pipes and cables through fire-resisting walls
- Door frames with gaps between frame and wall
Rented homes near Ingatestone station change hands often, and any gap left by new services in shared walls should be closed with a fire-rated product.
Before booking anyone
- Whether all the old sealant comes out first
- What guarantee comes with the work
- What the quote includes, VAT included or not
- How the surfaces are prepared before sealing
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Allow for resealing whenever new services are run
- Ask every contractor to reseal any fire stopping they disturb
- Keep the record of products and locations with your fire safety documents
- Keep pictures of seals that will be hidden
Include fire stopping in your regular building checks. Look for cracks, gaps or sealant that has been cut or pulled out and have them put right.
A flagged gap shouldn’t wait for the next assessment. Have it sealed, then keep the record so the item can be closed.
How we quote for fire rated sealant
The quote reflects the job in front of us. We look at:
- Whether old sealant or filler has to be cut out
- The size of the job
- The number of rooms or windows
- Working hours on commercial sites
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
Helping us quote
Before you ask for a quote, have a think about:
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
- Where the property is
- If someone has resealed it before
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.