Essex · England

Fire Rated Sealant in Brentwood

Our applicators work in Brentwood on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly.

  • Seals cut through by electricians, plumbers or data installers
  • Door frames with gaps between frame and wall
  • Holes left by a change of layout

Book fire rated sealant in Brentwood

What we can’t put right

We will always be straight with you, so here’s what new sealant won’t do:

  • Issuing a fire rating or certificate for a building
  • Walls or floors that weren’t built to resist fire
  • Problems with the door itself rather than the gap around the frame

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

Surfaces we seal

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

Fire rated sealant in Brentwood

We can work through a building room by room or floor by floor, noting the locations and products as we go. It gives you a list to keep with the building’s fire safety documents. Typical jobs include fire stopping disturbed by later work and cracked or shrunken fire-rated sealant, across service penetrations, linear gaps and pipe & cable gaps.

Washrooms in busy buildings wear their sealant out faster than a bathroom at home, and fire-rated joints need restoring whenever new services are run through a wall. For a building in Brentwood, we plan timings around how it’s used.

The work is covered for a year after we finish. If anything is not right with it, call 0345 464 0079 or email us.

Where
Brentwood (CM13, CM14, CM15, CM4)
Region
Essex
Cover
A year, on every job
Quote
A clear price before any work starts
Call
0345 464 0079
Last updated
26 October 2026
Mr Mastic applicators lined up beside the company vans, one holding a sealant gun

Landlords, agents and businesses in Brentwood

We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.

Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.

Why deal with it now?

Leaving a gap until a refurbishment comes round can mean years with it open. Sealing the gap now is a contained job on its own. In a family home in Brentwood, a failed seal around a bath or a frame lets water into places you cannot see, like the floor under a bath, the back of a panel or the inside of a wall. Whatever the joint, failed sealant only gets worse.

The cost depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts.

Why choose Mr Mastic in Brentwood

  • Experience in homes, commercial sites and hotels
  • Anti-fungal silicone where joints get wet
  • We leave the area clean and tidy
  • Arbo and Everbuild products

See how sealant jobs are priced and customer reviews.

Fire rated sealant around Brentwood

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 work to the specification you’re given, installing the product to its tested details.

Managing a site like Becket Keys Church of England School? Then service openings in fire-resisting walls need checking after any refurbishment. For buildings such as Church of St Thomas of Canterbury, older buildings that have had new heating or wiring often have service gaps worth checking.

Brentwood is about 19 miles north-east of London, in Essex. From the centre of Brentwood to the outskirts, we cover fire rated sealant for every kind of property. Brentwood is one of 644 towns and villages in Essex where we work. Chelmsford is on our list too, about 11 miles from Brentwood.

Postcode districts we cover here for fire rated sealant: CM13, CM14, CM15 and CM4. You’ll find streets such as High Street, London Road and Old Church Road, all of which we cover. With the A12 and A128 close by, Brentwood is simple for us to get to. If you’re just outside Brentwood, we cover Shenfield (1 mile north-east), Hutton Mount (1 mile east), Ingrave (2 miles south-east), Hutton (2 miles east) and Doddinghurst (3 miles north). Within a short drive, we also cover Chelmsford (11 miles north-east), Basildon (8 miles south-east), Harlow (13 miles north-west), Canvey Island (14 miles south-east), Billericay (5 miles east) and Rayleigh (13 miles east). Brentwood is among the bigger towns we cover in Essex.

Around Brentwood

Typical jobs here are in homes near Sawyers Hall College, Weald Country Park and St Helen's Catholic Junior School, among other places. For rail, the closest station is Brentwood station, about 0.9 miles south of the centre. Well-known places in the area include Brentwood Community Hospital (0.5 miles east). Open spaces near Brentwood include Thorndon Park.

Map of Brentwood © OpenStreetMap contributors

What happens on the day

Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a handful of gaps, and longer for a whole building, and the area is left clean. In Brentwood, parking is rarely complicated, though it helps to know about driveways or restrictions, and mention if the work is upstairs, in a flat or high on the outside.

  1. Before starting, we go through the specification or action list with you.
  2. Each gap is measured and its substrate and service noted.
  3. Any non-fire-rated filler is removed.
  4. We fit backing where needed and apply the fire-rated sealant to depth.
  5. Every location is recorded with the product used for your records.

Preparing for the visit

  • Mention any tricky access
  • Mention any leaks or damp you’ve noticed
  • Where the joints are inside, avoid wetting them before we arrive

Get a quote

Want a quote for fire rated sealant? Please ring 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before work begins.

Get a quick quote

Related advice

How to look after the new joints

Joint life depends on how it’s used and looked after. Here’s what we suggest:

  • Take photos of fire stopping before ceilings or boxing go back
  • Make resealing part of every contractor’s brief
  • Plan fire stopping into any work that goes through walls or floors
  • Keep general-purpose foam and caulk away from fire-stopping gaps

Follow the cure time we give you before decorating over the sealant. Some fire-rated sealants can be painted and some cannot and we’ll tell you which one you have.

An open gap isn’t only a fire issue: they also let noise, draughts and sometimes pests through. Dealing with them early helps with all of these.

FAQs for Brentwood

I let a flat near Brentwood station. Can you help?

Yes. We work for landlords and letting agents as well as homeowners. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.

Can you do fire rated sealant in Brentwood?

Yes. We work across London and the South East, and Brentwood is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.

Can you match the sealant colour?

Most of the time, yes. We’ll explain which colours are available and agree one before work begins.

What does intumescent mean?

Intumescent means it swells when heated. It’s one type of fire-rated sealant; which product suits depends on the gap, the substrate and the service.

Can new sealant go over the old?

No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.

Can you tell me how many minutes the seal will last?

We do not give ratings or certificates for our work. Your specification sets the requirement, and we fit a product whose tested details meet it, recording the locations and products.

Will the old sealant be removed?

Yes. We cut out all the old sealant and clean the joint before applying anything new.

What do you put in the joint?

It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.

How we quote for fire rated sealant

Every job gets its own quote. This is what makes a difference:

  • How much old sealant there is and how hard it is to remove
  • How many areas need sealing
  • Whether the work is at height
  • Any mould that needs treating

Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.

Helping us quote

What to tell us when you ask for a quote:

  • The rough size of the job
  • The problem you’ve noticed
  • Where the property is
  • A few pictures by email, if you can

There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or send us an email.

Do you need fire rated sealant in Brentwood?

In some buildings the gap was filled with the wrong thing in the first place: general-purpose foam, everyday silicone or caulk where a fire-rated seal was needed. It looks sealed, but it isn’t fire-rated.

People normally contact us after spotting one of these:

  • Holes left by a change of layout
  • Open gaps behind door architraves
  • Unsealed gaps where pipes and cables go through a wall
  • Damaged fire sealant left by other trades

Rented homes near Brentwood station change hands often, and fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.

Comparing quotes

  • How the colour is chosen
  • Are they insured?
  • Whether they seal over old material or remove it
  • How the surfaces are prepared before sealing

Choosing a sealant specialist

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job