Essex · England

Fire-rated sealant in Danbury, Essex

Intumescent and fire-rated sealant around gaps, frames and service penetrations for Danbury, backed by a 12-month guarantee. Call for a quick quote.

  • New service routes left unsealed after building work
  • Unsealed gaps around fire door frames
  • Ordinary sealant used where a fire-rated product was needed

Need fire rated sealant in Danbury?

Fire rated sealant in Danbury, done properly

In flats, HMOs, offices and schools, fire stopping is often disturbed by later work. One new cable or pipe can leave a gap that nobody goes back to seal. We seal them with a product tested for that kind of gap. Common call-outs are for ordinary sealant used where a fire-rated product was needed and cracked or shrunken fire-rated sealant, across linear gaps, service penetrations and pipe & cable gaps.

In a smaller place like Danbury, commercial jobs tend to be smaller buildings: a pub, a surgery, a school, a shop or a few business units. The work is the same as in a big building, just on a smaller scale.

We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.

Where
Danbury (CM3)
Wider area
Essex
Guarantee
One year on every job
Quote
Quoted before any work starts
Call
0345 464 0079
Updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

What we can’t put right

We will not take on work that will not last, so here’s what sealant can’t put right:

  • Walls or floors that weren’t built to resist fire
  • Issuing a fire rating or certificate for a building
  • Deciding what fire stopping a building needs

Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.

Where we work in Danbury

  • Door frames
  • Linear gaps
  • Plasterboard & masonry
  • Service penetrations
  • Flats & HMOs
  • Pipe & cable gaps

Keeping the joints in good condition

Aftercare is simple:

  • Don’t paint over fire sealant until it has cured
  • Include fire stopping when you schedule refits
  • Don’t fill fire-stopping gaps with ordinary foam or silicone
  • Keep photos of seals that will be hidden

Keep the record we give you with the building’s fire safety documents. It saves time at the next inspection or assessment.

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 normally a straightforward job.

DIY sealant or a professional job?

Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.

A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.

How the visit works

Once we’re on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to several days, depending on how many gaps there are. A visit to Danbury is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.

  1. We plan the order of work and access, floor by floor or flat by flat.
  2. We take out any damaged or unsuitable sealant.
  3. Gaps are cleaned of dust and loose material.
  4. The fire-rated or intumescent sealant is applied and tooled to the tested detail.
  5. Locations and products are written up and any gaps unsuitable for sealant are flagged.

Before we arrive

  • Let us know about parking restrictions
  • For indoor joints, keep the area dry beforehand if you can
  • Mention any sign-in or site rules at work premises

Getting a quote

Every job is quoted individually. Just phone 0345 464 0079 or email us with the details, and pictures are welcome.

Get a price

Read more

Danbury: your questions answered

Can you do fire rated sealant in Danbury?

Yes. We work across London and the South East, and Danbury is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing.

Do you cover smaller places like Danbury?

Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.

Will you assess my building’s fire safety?

No. Your fire risk assessor, designer or building control decides that. Our job is applying the sealant to their specification.

Do the sealants smell?

That depends on the sealant. Some products have a noticeable smell, others very little.

What’s the difference between intumescent and fire-rated sealant?

Fire-rated sealant covers any sealant tested for use in fire stopping. Intumescent types expand when heated, and they’re one option among several. We use whichever the specification and tested details call for.

Do I have to be there?

It depends on the job. Inside work needs someone to give us access.

How much does fire rated sealant cost in Danbury?

It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or email us and tell us what needs doing and where.

Are you insured?

Yes. Full insurance covers our work, and we can confirm the details when we quote.

Do you need fire rated sealant in Danbury?

Many open fire-stopping gaps are made after the building is finished. Electricians, plumbers and data installers drill through walls and ceilings and the hole round the new service isn’t always sealed again.

It’s worth asking for a quote if you see:

  • Joints picked up in a fire-stopping survey
  • Open gaps behind door architraves
  • Gaps left after a refit or conversion
  • Seals cut through by electricians, plumbers or data installers

Managing a site like Danbury Park Community Primary School? Then service openings in fire-resisting walls need checking after any refurbishment.

Before you book anyone

  • Whether all the old sealant comes out first
  • How long to leave it before use
  • What preparation is included
  • What product goes in the joint

Choosing a sealant specialist

Work for landlords, hotels and businesses

Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.

We work for letting agents and landlords as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.

Leave it or put it right?

An open gap in a fire-resisting wall is a route for smoke and fire. Sealing it properly restores what the wall was there to do, and the work involved is often modest. In an older home around Danbury, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.

No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.

Why us?

  • Every job guaranteed for a year
  • More than 20 years in sealant work
  • Rated 4.9 stars on Google
  • Approved under the ARBOMaster scheme

Take a look at our cost guide or what customers say.

Fire rated sealant around Danbury

Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, and gaps around services are often picked up there. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.

Letting a property close to Beaulieu Park station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. For buildings such as Church of St John the Baptist, gaps around pipes and cables are worth checking after any building work there.

Danbury is about 4 miles west of Maldon, in Essex. Every kind of property in Danbury is covered for fire rated sealant, old or new, large or small. The work is guaranteed for a year. We cover 644 towns and villages across Essex, large and small.

Postcode districts we cover here for fire rated sealant: CM3. Streets in the area include Butts Lane, Eves Corner and West Belvedere, and we cover them all. Close by, we work in Gay Bowers (1 mile south-east), Little Baddow (2 miles north), Butt's Green (2 miles south-west), Sandon (3 miles west) and Mowden (3 miles north). Within a short drive, we also cover Chelmsford (4 miles west), Basildon (11 miles south-west), Braintree (11 miles north), Brentwood (14 miles south-west), Maldon (4 miles east) and Canvey Island (13 miles south).

Local landmarks in Danbury

Around Danbury, our work takes us to homes and buildings near The Griffin Inn, among other places. The closest station to Danbury is Beaulieu Park station, roughly 4 miles north-west of the centre. Other landmarks nearby include Baddow Hospital (3.5 miles west). The countryside around Danbury includes Danbury Ridge Nature Reserves.

Map of Danbury © OpenStreetMap contributors
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job