The Mastic Doctor team standing beside their branded vans outside an office building
Kent · England

Fire-rated sealing and fire stopping in Ham, Kent

Commercial sealant work in Ham for contractors, FMs and building owners: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.

  • Fire seals cut back for extra cables and never reinstated
  • Unsealed openings around new pipes and cables
  • Unsealed penetrations discovered above suspended ceilings
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Fire stopping near Ham

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Fire stopping for commercial buildings in Ham

Where pipes, cables and other services cross a compartment wall or floor, the opening around them has to be closed so fire and smoke can’t move between compartments. Our part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. Each seal follows the manufacturer’s tested detail, not a rule of thumb. We work on pipe penetrations, cable penetrations and small duct penetrations where the tested detail allows, and what we’re called in for most is unsealed joints where partitions meet the slab and damaged fire seals in risers and voids. A single leaking joint is often how a building in Ham first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

For a smaller site near Ham, we plan to do all the penetrations in one go, with the specification and photographs sent in advance. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.

We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Ham (CT14)
Wider area
Kent
Cover
12 months on our workmanship
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026

Fire-rated sealing for Ham buildings

Approved Document B is the English guidance that covers fire stopping around openings and penetrations. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail. Ham is about 64 miles from central London. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls.

Holiday works at schools like Worth Primary School often leave service openings to seal before pupils return. For a building at a site such as Birnham Farm Business Centre, which lies north-west of Ham, a check of penetration seals after each fit-out is good practice.

Ham is about 3 miles north-west of Deal, in Kent. Our applicators travel to Ham for work on service penetrations, handled exactly as we handle every other area. Our Kent coverage takes in 931 places, from busy centres to rural villages. Sites around London have their own page, roughly 64 miles from Ham.

Work on service penetrations is covered throughout CT14, for business premises of every kind. Nearby places we also cover include Statenborough (1 mile north-west), Felderland (1 mile north), Worth (1 mile north-east), Marley (1 mile south-east) and Finglesham (1 mile south-east) for service penetrations. Further afield, our area takes in Canterbury (11 miles west), Margate (10 miles north), Dover (8 miles south), Folkestone (13 miles south-west), Ramsgate (7 miles north-east) and Broadstairs (9 miles north-east).

What’s near Ham

Locally, jobs take us to sites close to Ham Fen, Sandwich Technology School and The Blue Pigeons pub and the streets around them. The nearest railway station is Sandwich station, roughly 1.7 miles north. Other landmarks nearby include Sandown Castle (3.1 miles east) and The Precinct Toy Collection (2.1 miles north). Open spaces near Ham include Monk's Wall nature reserve.

Map of Ham © OpenStreetMap contributors

Questions we’re asked in Ham

Is Birnham Farm Business Centre, near Ham, within your area?

Yes. We cover Ham and the area around it, including industrial estates, business parks and retail parks such as Birnham Farm Business Centre. Photos and a short description are enough for a first look.

What happens to BS 476 references for fire stopping in Ham?

From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.

How do you deal with asbestos in old sealant?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.

How do we ask for a quote?

It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photos and a postcode.

When can the area be used after sealing?

We’ll confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.

Can the sealant be colour-matched?

In many cases, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We confirm what’s available for the specified product when we quote.

How long does a job like this take?

That varies with the scale of the job, but the work usually takes a single visit for a short list of penetrations, or a phased programme for a whole building. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

Why it’s worth doing now in Ham

An unsealed opening affects more than fire safety: they also carry noise, draughts and smells between rooms. Sealing them to the specified detail deals with the fire risk first. Converted and older buildings near places like Ham tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site rules also count.

Why choose Mastic Doctor in Ham

  • Public liability insurance in place
  • CHAS accredited
  • One phone line for London, the South East and Scotland
  • 12 months’ guarantee on every job

Take a look at how commercial sealant jobs are priced and our accreditations and insurance.

After the work

A few simple habits keep the new joints working:

  • Don’t let anyone top up a fire seal with the wrong product
  • File the specified details where the next contractor can find them
  • Agree the fire-stopping specification before services go in
  • Put resealing into every M&E and fit-out package

Don’t patch a fire-rated seal with anything outside its tested detail. A repair should use the original product, installed the same way, or a new specification from the designer.

On fit-outs, get the fire-stopping specification agreed before the services go in. The designer can then choose details that suit the services planned.

What the job involves on each surface

Small ducts

Small ductwork can sometimes be sealed with sealant where the tested detail includes it. Bigger ducts and fire-resisting ductwork are normally handled with other products, and we will say if that applies.

Risers and ceiling voids

Risers and ceiling voids hold most of a building’s service penetrations. Access to these areas is planned with you in advance.

Signs you need fire stopping in Ham

Mixing products or improvising a detail breaks the link with the test evidence. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are the usual culprits.

If one of these sounds familiar, it’s time for a closer look:

  • Builders’ foam or ordinary silicone in compartment walls
  • Fire stopping installed outside its tested range
  • Fire seals cut back for extra cables and never reinstated
  • Fire sealant pulled out of the opening

For a building such as Church of St George, new heating or data runs are the usual reason penetrations need sealing.

Questions to ask before you book

  • Are they CHAS accredited or on Constructionline?
  • Proof of insurance
  • What the guarantee covers, and for how long
  • How the existing material will be dealt with

Questions to ask before you appoint anyone

Doing it in-house

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Diagnose, treat, sign off

Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. For a building around Ham, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.

  1. We ask for the product and detail your designer has specified.
  2. We sort the openings by the detail each one needs.
  3. Old or wrong materials are cut out.
  4. Where the detail needs backing, it goes in at the stated depth.
  5. We gun the sealant in to the specified depth around each service and tool it.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

Getting the site ready

  • Agree which areas must stay open
  • Make sure the joints can be reached
  • Send your site hours and access windows

Quotes

Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. To get it moving, give us a call on 01277 525 020 or email the details over.

Get a quick quote

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