Kent · England

Fire-rated sealant in Dean Street, Kent

Intumescent and fire-rated sealant around gaps, frames and service penetrations for Dean Street, backed by a 12-month guarantee. Ask us for a quote.

  • Gaps around pipes and cables through fire-resisting walls
  • Gaps where walls meet ceilings or slabs
  • Holes left by a change of layout

Need fire rated sealant in Dean Street?

What we can’t put right

We will not take on work that will not last, so these are the limits:

  • Openings too large for sealant, which need batts, boards or another system
  • Doors that are not fire doors in the first place
  • Sign-off of the building, which sits with building control or your assessor

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

Joints and surfaces we work on

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

How we handle fire rated sealant in Dean Street

Filling a fire-stopping gap with standard silicone or caulk does not make it fire-rated. We cut out the wrong material and reseal with a fire-rated product tested for that kind of gap. Common call-outs are for gaps left after a refit or conversion and ordinary sealant used where a fire-rated product was needed, on linear gaps, pipe & cable gaps and service penetrations.

For a small place like Dean Street, the journey and timings are agreed in advance, so the job can fit around bookings, guests or opening times where possible.

The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.

Eleven members of the Mr Mastic team standing in front of branded white vans
Where
Dean Street (ME15)
Region
Kent
Guarantee
12 months on all our work
Quote
Quoted before any work starts
Phone
0345 464 0079
Page updated
26 October 2026

DIY versus a professional finish

Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.

Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.

Dean Street questions

I let a flat near East Farleigh station. Can you help?

Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear price.

Do you cover Dean Street for fire rated sealant?

Yes, Dean Street is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear price.

Are you insured?

Yes. We are fully insured.

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

Ratings and certification sit with the product’s test evidence and whoever specified the work. We apply the specified product to the manufacturer’s details and giving you a record of where it went.

What do you put in the joint?

We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.

Where do you work from?

Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.

Do the sealants smell?

That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.

Do you take on fire stopping in schools and offices?

Yes. We work in flats, HMOs, schools, offices and other commercial buildings, including occupied ones. We agree access and the order of work with you first.

Quotes for fire rated sealant in Dean Street

We quote each job individually. These are the things that affect it:

  • Mould in or behind the old joints
  • Working hours on commercial sites
  • Which sealant suits the joint
  • How many areas need sealing

A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.

Asking for a quote

Before you ask for a quote, have a think about:

  • Photos by email, if that is easy
  • The problem you’ve noticed
  • The type of property
  • The address or postcode of the job

We quote each job on its own. Just ring 0345 464 0079 or drop us an email with the details and send photos if you have them.

For landlords and businesses

Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.

A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.

Common problems we fix in Dean Street

Buildings are refitted and reconfigured over the years. Conversions to flats and HMOs, and office refits, create new walls and new routes for services, with gaps to match.

Keep an eye out for any of the following:

  • Open gaps behind door architraves
  • Holes left by a change of layout
  • Ordinary sealant used where a fire-rated product was needed
  • Fire seals that have cracked with movement

For site and facilities teams at buildings such as East Farleigh Primary School, fire-stopping around service openings should be restored whenever new services go in.

Questions to ask before you book

  • When the joint can take water or movement
  • How hidden problems are handled
  • How the surfaces are prepared before sealing
  • Who does the work, and how experienced they are

Choosing a sealant specialist

Why deal with it now?

Squirting in whichever sealant is nearest does not 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. Where a wall is exposed, as many are in small places like Dean Street, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.

Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.

Why Dean Street customers choose us

  • We leave the area clean and tidy
  • Every job guaranteed for a year
  • Old sealant always removed completely
  • 4.9 on Google from 180+ five-star reviews

Take a look at our cost guide and customer reviews.

The process

When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to several days, depending on how many gaps there are. Somewhere as small as Dean Street, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. First we work through your list or survey, measuring each gap and checking what it’s formed in.
  2. Old or unsuitable sealant is cut out and the gap cleaned.
  3. Backing or fill is fitted where the product’s tested detail calls for it.
  4. Fire-rated or intumescent sealant is applied to the right depth and tooled.
  5. Locations and products are noted so you have them on file.

How to prepare

  • Let us know if you’ve seen damp or leaks
  • Mention any sign-in or site rules at work premises
  • Let us know about stairs, lifts or work at height

Getting a quote

For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.

Ask for a quote

Read more

Workplaces and buildings in Dean Street

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 buildings such as Church of Saint Mary, older buildings that have had new heating or wiring often have service gaps worth checking. Letting a property close to East Farleigh station? Then any gap left by new services in shared walls should be closed with a fire-rated product.

Dean Street is about 2 miles south-west of Maidstone, in Kent. Dean Street gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Across Kent, we cover 922 places, Dean Street among them. There’s also a page for London, roughly 31 miles from Dean Street.

We cover every part of ME15 for fire rated sealant and the streets around it. Streets in the area include Forge Lane and Dean Street, all of which we cover. If you are just outside Dean Street, we cover East Farleigh (1 mile west), Coxheath (1 mile south), Fant (1 mile north), Kettle Corner (1 mile west) and Farleigh Green (1 mile west). We also work in nearby towns such as Sittingbourne (12 miles north-east), Sevenoaks (14 miles west), Royal Tunbridge Wells (13 miles south-west), Gravesend (13 miles north), Tonbridge (10 miles west) and Northfleet (14 miles north-west).

Landmarks near Dean Street

In Dean Street, that means homes and buildings near Walnut Tree pub, St Augustine Academy and Quarry Wood and the streets around them. The nearest railway station is East Farleigh station, roughly 0.6 miles north-west of the centre. A little further out are Allington Castle (3 miles north) and Fremlin Walk (2 miles north-east). For a walk, there’s Boxley Hills.

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