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

Fire-rated sealing and fire stopping in Old Tree, Kent

Looking for fire stopping in Old Tree? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Hidden openings found during inspections
  • Fire-rated sealant that has cracked or shrunk back
  • Open linear gaps along the top of fire-resisting walls
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS accredited
£5m public liability

Need fire stopping in Old Tree?

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Building owners, agents and FMs in Old Tree

We work for building owners and managing agents on sealant work across single buildings or whole portfolios around Old Tree. Several sites can go on one quote, which keeps the paperwork simple.

For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.

About our fire stopping in Old Tree

A lot of fire-stopping work comes after M&E installation, a refit or a tenant fit-out. Each new cable, pipe or data route cut through a fire-resisting wall leaves an opening behind, often unnoticed. We close the openings listed on your schedule, using the specified sealant and detail. If you have head-of-wall gaps with no fire seal and service penetrations left open after M&E works, we can put it right, on pipe penetrations, cable penetrations and joints between fire-resisting walls and floors alike. Searching for sealant specialists in Old Tree? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

Rural conversions around Old Tree can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.

We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Old Tree (CT3)
Wider area
Kent
Cover
A 12-month guarantee
Quote
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

When to bring in a specialist

A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.

Cost factors for service penetrations

Sealant work doesn’t have a standard rate, because every site is different. What we take into account:

  • The size and state of each joint
  • Phasing around occupants
  • Location, for remote and island sites
  • Specialist products, such as fire-rated or hygienic sealants

We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we will price your job on its own details.

Details that help us quote

A few photos plus some basic facts will normally do. Please tell us:

  • Specification clauses that apply
  • The site address and postcode
  • Rough lengths or quantities, or drawings if you have them
  • Clear photos of the problem areas

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to speak to us on 01277 525 020 or send details through our quote form with what you know.

Aftercare for building managers

Keep the joints in good shape with a few simple steps:

  • Keep general-purpose fillers away from compartment walls
  • Ask the designer to confirm details early on refits
  • Get seals inspected before ceilings and boxing close
  • Keep product data and details in the fire safety file

Don’t patch a fire-rated seal with anything outside its tested detail. Repairs need the same product and detail as the original.

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, and the work runs in step with the M&E.

How a job runs

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed, then handed back before the next one starts. If others near Old Tree need work, visits can be combined. You’ll have a fixed quote before work starts.

  1. We ask for the product and detail your designer has specified.
  2. Openings are measured and grouped by detail.
  3. Old or wrong materials are cut out.
  4. Mineral wool or other backing is fitted where required.
  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

  • Tell us your opening times and when work is allowed
  • Tell us what induction or permit system the site runs
  • Point out any areas we must not close

Getting a fixed quote

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. For a chat about it beforehand, call 01277 525 020 or use the quote form.

Ask for a quote

Related advice

Different surfaces, different methods

Cables and cable bundles

New data and power cables are the most common breach we see. We reseal around them to the specified detail, and any bundle too large for sealant alone is flagged.

Plastic pipes

Waste and drainage pipes through floors are a frequent case. Whether sealant alone is acceptable depends entirely on the tested detail, and we won’t substitute it for a specified collar.

Penetration seals near Old Tree

At about 56 miles from central London, Old Tree is within reach of the capital. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls. Fire stopping of openings and penetrations in England falls under Approved Document B. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. We install whatever has been specified, to the product’s tested detail.

Offices at parks like Chislet Business Park, 1.1 miles to the south of Old Tree, are re-cabled with each new tenant, and compartment walls need sealing afterwards to the tested detail. Theatres, wards and plant rooms at sites like Queen Victoria Memorial Hospital (2.3 miles north-west of Old Tree) all have compartment walls crossed by services. Halls and meeting rooms at places like Church of the Holy Cross sometimes gain new services, and any compartment wall crossed needs the specified seal.

Old Tree is about 3 miles south-east of Herne Bay, in Kent. We cover Old Tree and the rest of Kent, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 931 places in Kent, from busy centres to rural villages. There’s a separate page for London, about 56 miles away.

If you need fire stopping in CT3, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your building is just outside Old Tree, we cover Maypole (1 mile west), Hoath (1 mile south-west), Millbank (1 mile north-west), Knave's Ash (1 mile south-west) and Hollow Street (1 mile south-east). A short drive away, we cover Canterbury (6 miles south-west), Margate (10 miles east), Dover (15 miles south), Ramsgate (10 miles east), Broadstairs (11 miles east) and Whitstable (6 miles west).

What’s near Old Tree

In Old Tree, that means premises near Curtis Wood and Spires Academy, among other places. The closest station to Old Tree is Herne Bay station, roughly 2.9 miles north-west. Other landmarks nearby include St Martins Hospital (5.1 miles south-west). Not far away are West Blean and Thornden Woods.

Map of Old Tree © OpenStreetMap contributors

Your questions answered

What does the BS 476 change mean for fire-rated sealant in Old Tree?

Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.

Is Chislet Business Park, near Old Tree, within your area?

Yes, sites like Chislet Business Park are within our area, along with the rest of Old Tree. Photos and a short description are enough for a first look.

Is any job too small?

Small jobs are welcome alongside larger packages. Photos and a description are enough to start.

When can you be on site?

Mention the site’s hours and access windows in your enquiry, and we will plan around them. You can reach the office between 8am and 5pm, Monday to Friday.

What’s the quickest route to a quote?

It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photographs and a postcode.

Can you handle several sites?

Yes. A group of buildings can go on one quote, with one point of contact across South East England, Greater London and Scotland.

How much does the work cost?

We don’t publish prices, as every site differs. With photographs or drawings, we can give you a fixed quote.

Accreditations

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