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

Fire-rated sealing and fire stopping in Selling, Kent

Sealant work in Selling for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.

  • Snag lists that include open service penetrations
  • Improvised or mixed-product fire seals
  • Service penetrations left open after M&E works
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Fire stopping near Selling

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Fire stopping in Selling

Most of our fire stopping work happens after the building is up. Each new cable, pipe or data route cut through a fire-resisting wall leaves an opening behind, and they are easy to forget. We close the openings listed on your schedule, using the specified sealant and detail. We work on pipe penetrations, linear gaps at wall heads and cable penetrations, and what we are called in for most is unsealed openings around new pipes and cables and fire stopping installed outside its tested range. Facilities teams, main contractors and managing agents in Selling tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

For a smaller site near Selling, we plan to do all the penetrations in one go, so send the specification and photographs first. Design and sign-off belong to the designer or building control; we install what’s specified.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.

Place
Selling (ME13)
Wider area
Kent
Guarantee
12 months on every job
Price
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Penetration seals near Selling

Central London is about 47 miles from Selling. Office refits around the commuter belt bring new cabling through fire-resisting walls. Fire stopping of openings and penetrations in England falls under Approved Document B. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail.

For a school such as Selling Church of England Primary School, penetration sealing fits best at the end of the summer works. In a building such as Church of St Mary, any service penetration through a fire-resisting wall should be sealed to the specified detail.

Selling is about 3 miles south-east of Faversham, in Kent. Across the ME13 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Across Kent, 931 places are covered, Selling among them. We also cover London, some 47 miles away.

Work on service penetrations is covered throughout ME13, for business premises of every kind. Among the streets we cover are Selling Road, Selling Court and Vicarage Lane. Close to Selling, our area also takes in Perrywood (1 mile south), Hogben's Hill (1 mile west), Gushmere (1 mile north), Neames Forstal (1 mile east) and Crouch (1 mile north-east). Bigger towns within reach include Ashford (9 miles south), Canterbury (7 miles east), Sittingbourne (10 miles north-west), Whitstable (7 miles north-east), Faversham (3 miles north-west) and Herne Bay (11 miles north-east).

What’s near Selling

In Selling, that means premises near The White Lion Public House, among other places. For rail, the closest station is Selling station, roughly 0.8 miles north-east. Well-known places in the area include Tower keep castle at Chilham (2.5 miles south-east).

Map of Selling © OpenStreetMap contributors

Why deal with it now?

Open penetrations multiply: each new service adds to the list. Keeping on top of it after each round of works keeps the job small and avoids a much larger catch-up later. One visit to deal with every failing joint makes more sense than several trips to a place like Selling. Photos of every joint help us quote for the whole job.

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

Why us?

  • Work carried out by CSCS-carded applicators
  • Constructionline member
  • Joints cleaned back to sound surfaces
  • Clear, fixed quotes

See how commercial sealant jobs are priced or our accreditations and insurance.

After the work

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Brief every trade that openings they make must be sealed
  • Report damaged or disturbed seals as soon as they’re spotted
  • Ask which product is in place before decorating
  • Foam or ordinary sealant is never a fire-seal repair

Never top up a fire seal with foam, ordinary silicone or filler. Repairs need the same product and detail as the original unless the designer specifies otherwise.

Keep a register of where seals are and what they are made of. When a new service goes through, everyone knows which product and detail to match.

What the job involves on each surface

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.

Drylining partitions

Service holes through plasterboard are frequently oversized or ragged. If the gap exceeds the tested range, sealant alone won’t do, and the detail may call for board patching or another product.

Site staff or a sealant specialist?

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

From enquiry to sign-off

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. Rural sites near Selling may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. We read the specification, drawings or penetration schedule you send.
  2. On site, each opening is checked against the tested detail it is meant to follow.
  3. Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
  4. We fit the backing the detail asks for, to the stated depth.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

Getting the site ready

  • Send asbestos survey details if the building is pre-2000
  • Make sure the joints can be reached
  • Flag any permit to work we’ll need

Quotes

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or use the quote form.

Get a quick quote

Read more

Building owners, agents and FMs in Selling

CHAS accredited and a Constructionline member, we’re straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

Common questions from Selling clients

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

References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.

Is a smaller place like Selling outside your area?

Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Are you fully insured?

Yes. We are fully insured, and the certificate can go with your quote.

Do you work to architects’ specifications?

Yes. Send it with your enquiry, and we will price the work to it.

Can you handle several sites?

Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.

Do you offer coloured sealant?

It depends on the product. Some ranges offer many colours, others very few, so we will confirm the colours available for the specified product with the quote.

How do you deal with asbestos in old sealant?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. 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. We don’t remove asbestos-containing materials.

Accreditations

Trusted. Accredited. Insured.