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

Fire-rated sealing and fire stopping in Puddledock, Kent

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Puddledock and the surrounding area. Send photographs or drawings for a fixed quote.

  • Fire seals cut back for extra cables and never reinstated
  • Fire-rated sealant that has cracked or shrunk back
  • Non-fire-rated filler around services
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
Constructionline member
£5m public liability

Fire stopping in Puddledock

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

Your questions answered

Is hospital work, at somewhere like Tandridge Priory, something you do?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

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

Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes 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.

Can you quote from photographs?

Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit before quoting.

Is your workmanship covered by a guarantee?

Yes. It runs for twelve months and covers how we prepared and sealed the joints, though not damage or work by other trades.

Are you CHAS accredited and on Constructionline?

Yes. We are CHAS accredited, we’re a Constructionline member and we use CSCS-carded applicators.

Does the weather affect the work?

Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.

Is any job too small?

Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.

Fire stopping in Puddledock

A fire-rated sealant is only one part of a tested system: the evidence covers a specific product, wall or floor type, service, gap, depth and backing. We match each opening to that detail before any sealant goes in. We work on linear gaps at wall heads, pipe penetrations and cable penetrations, and the failures we’re asked to look at most are fire-rated sealant that has cracked or shrunk back and snag lists that include open service penetrations. Whoever orders the work in Puddledock, the brief is typically the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Rural conversions around Puddledock can put new fire-resisting partitions inside older structures. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.

We stand by our work: 12 months, guaranteed. It covers how we prepared and applied the sealant.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Puddledock (TN16)
Wider area
Kent
Cover
12 months on every job
Price
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026

What the job involves on each surface

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.

Small ducts

We seal around ducts only within what the tested detail covers. Dampers and ductwork systems themselves are outside our work.

What sealant work can’t fix

Some faults sit outside our scope, and we say so rather than covering them up:

  • Fire risk assessments, a job for a competent assessor
  • Walls or floors that aren’t fire-resisting to begin with
  • Deciding what a wall or floor needs, which belongs to the designer

If you’re not sure, just speak to us on 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

Surfaces we seal

  • Small duct penetrations where the tested detail allows
  • Pipe penetrations
  • Service gaps in risers
  • Linear gaps at wall heads
  • Joints between fire-resisting walls and floors
  • Cable penetrations

When to call us in Puddledock

Plenty of openings were simply never closed, often hidden above suspended ceilings or behind boxing. Inspections, refurbishments and ceiling access typically bring them to light.

Site and facilities staff are often the first to spot these:

  • Hidden openings found during inspections
  • Fire-stopping items raised at inspection or handover
  • Unsealed joints where partitions meet the slab
  • Improvised or mixed-product fire seals

In a building such as Holy Trinity Church, any service penetration through a fire-resisting wall should be sealed to the specified detail.

Comparing quotes

  • Their plan for phasing and protecting the area
  • Whether primer will be used where the manufacturer specifies it
  • Health and safety accreditation such as CHAS
  • Will RAMS and insurance details be available?

Choosing a commercial sealant contractor

When to bring in a specialist

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: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Building owners, agents and FMs in Puddledock

We work for building owners and managing agents on sealant work across single buildings or whole portfolios. 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.

Service penetrations in Puddledock buildings

Puddledock lies roughly 20 miles out from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls; the gaps need the specified seal. For England, the fire stopping of penetrations is dealt with in Approved Document B. 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. Either way, we install the specified product to its tested detail.

Wherever services are added at a hospital such as Tandridge Priory (to the west of Puddledock) the compartment line has to be made good with the specified product.

Puddledock is about 4 miles east of Oxted, in Kent. Across the TN16 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Puddledock is one of 931 places we cover in Kent. London is covered too, around 20 miles from Puddledock.

Postcode districts covered here: TN16. Nearby places we also cover include Pootings (1 mile south-west), Crockham Hill (1 mile west), Goodley Stock (2 miles west), Four Elms (2 miles south) and Mowshurst (2 miles south). A short drive away, we cover Dartford (15 miles north), Sevenoaks (5 miles north-east), Royal Tunbridge Wells (10 miles south-east), Tonbridge (8 miles east), Swanley (12 miles north) and Kings Hill (14 miles east).

What’s near Puddledock

For rail, the closest station is Edenbridge station, roughly 2.5 miles south-west. Other landmarks nearby include Tandridge Priory (3 miles west) and Hever Castle (3.7 miles south). The countryside around Puddledock includes Betsom's Hill and Dryhill Nature Reserve.

Map of Puddledock © OpenStreetMap contributors

From enquiry to sign-off

Inspect, seal, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. If others near Puddledock need work, visits can be combined. You will 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. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

What we need from you

  • Tell us which areas need to stay in use
  • Let building users know which areas are affected
  • Flag any permit to work we’ll need

Quotes

Send us photos, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.

Ask for a quote

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Accreditations

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