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

Painters Ash fire stopping

Fire-rated and intumescent sealing of service penetrations and linear gaps throughout Painters Ash and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • Open linear gaps along the top of fire-resisting walls
  • Fire stopping installed outside its tested range
  • Snag lists that include open service penetrations
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Fire stopping for Painters Ash sites

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

About our fire stopping in Painters Ash

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, often unnoticed. Those on your schedule are closed with the specified product. We work on pipe penetrations, small duct penetrations where the tested detail allows and cable penetrations, and what we’re called in for most is seals that don’t match their tested detail and fire sealant pulled out of the opening. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Painters Ash, preparation and product choice get the time they need.

Around Painters Ash, penetration and linear seals tend to be one-building jobs. With the specification and photographs of the gaps, we can give a fixed quote and bring the right products.

A 12-month guarantee applies to all our work. If an installation problem shows up, give us a call on 01277 525 020 or email us and we’ll arrange a return visit.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Painters Ash (DA11, DA13)
Wider area
Kent
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026

What the job involves on each surface

Metal pipes

Metal pipes conduct heat, so their details often call for extra measures along the pipe. If the detail needs something beyond sealant, we tell you.

Small ducts

Some fire-rated sealant details cover small ducts. Larger or fire-rated ductwork typically needs a different solution set by the designer, and we’ll say if that applies.

Keeping the joints sound

Problems stay small when the joints are checked regularly. In particular:

  • Keep product data and details in the fire safety file
  • Put resealing into every M&E and fit-out package
  • Agree the fire-stopping specification before services go in
  • Ask which product is in place before decorating

Keep the product data and installation details with the building’s fire safety information. It makes later repairs much easier to match.

The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. Then the seal goes in while the area is open, not months later.

Questions about Painters Ash

Would you work within a site like Gravesham Community Hospital?

Yes, provided the work is planned with the site’s estates team. We follow the site’s permits, sign-in and infection-control procedures in every area.

How does the move away from BS 476 affect penetration seals in Painters Ash?

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.

Do you offer coloured sealant?

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

Can you work to our specification?

Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.

How long before the joints can be used?

We’ll confirm how long the chosen product needs to cure.

When can you be on site?

Give us your site hours and any access windows in your enquiry, and we’ll schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.

How do we ask for a quote?

You can use the quote form on this site; alternatively, speak to us on 01277 525 020 or send photos by email. Photos, drawings or a joint schedule help us quote quickly.

How the quote is worked out

Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:

  • Joint width, depth and condition
  • Quantities, in metres or numbers
  • Phasing around occupants
  • Whether old sealant has to be cut out first

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.

Details that help us quote

For an accurate fixed quote, we need a clear picture of the site. Useful things to include:

  • Whether the building will be occupied during the work
  • When you need the work done
  • The site address and postcode
  • The asbestos register, for older buildings

A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we’ll arrange a site visit if anything is unclear.

Service penetrations in Painters Ash buildings

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. Our part stays the same: the specified product, installed to its tested detail. At about 19 miles from central London, Painters Ash is within reach of the capital. Office refits around the commuter belt bring new cabling through fire-resisting walls; the gaps need the specified seal.

Wherever services are added at a hospital such as Gravesham Community Hospital (to the north-east of Painters Ash) the compartment line has to be made good with the specified product. For a site team at a college like North West Kent College, which lies east of Painters Ash, fire-rated sealing is best scheduled after the summer works.

Painters Ash is about 1 mile south-west of Northfleet, in Kent. Anywhere in DA11, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Painters Ash is one of 931 places we cover in Kent for service penetrations. There’s a separate page for London, about 19 miles away.

We cover the DA11 and DA13 postcode districts for service penetrations. If your site is on Hog Lane, Hall Road and Hunt Road or close by, send details and we’ll quote for service penetrations. With the A2 nearby, Painters Ash is straightforward for us to reach. We also cover Springhead (1 mile north-west), Northfleet Green (1 mile south), Northfleet (1 mile north-east), Southfleet (1 mile south-west) and Betsham (1 mile west) for service penetrations. A short drive away, we cover Maidstone (14 miles south-east), Dartford (5 miles west), Sevenoaks (12 miles south-west), Swanley (7 miles west), Kings Hill (11 miles south) and Foley Park (13 miles south-east).

Landmarks near Painters Ash

Locally, jobs take us to sites close to Battle of Britain pub, Castle Hill Park and Northfleet School for Girls, among other places. For rail, the closest station is Ebbsfleet International station, roughly 1.5 miles north-west of the centre. A little further out are Stone Castle (2.9 miles north-west) and Gravesham Museum (1.8 miles north-east). For a walk, there’s Sawyers Lake and Chafford Gorges Nature Park.

Map of Painters Ash © OpenStreetMap contributors

When to bring in a specialist

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

How a job runs

Before we leave any area, we remove the tape, clean down and inspect every joint, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. Work in places the size of Painters Ash is planned as a single visit where we can. Clear photographs and measurements help us bring the right products.

  1. First we confirm the product and tested details named in the specification.
  2. We sort the openings by the detail each one needs.
  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. Completed areas are checked with you, with the records agreed when we quoted.

Getting the site ready

  • Confirm the product named in the specification
  • Tell us which areas need to stay in use
  • Move anything stored against the joints

Request a quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or email drawings and photos.

Get a quick quote

Read more

When to call us in Painters Ash

Head-of-wall joints and wall-to-wall junctions are frequent weak points. Deflection and building movement can open these gaps, and the wrong product can split as a result. The tested detail for a linear joint states the width and movement it covers.

Things that normally lead to an enquiry:

  • Openings left by services added after handover
  • Unsealed penetrations discovered above suspended ceilings
  • Damaged fire seals in risers and voids
  • Improvised or mixed-product fire seals

Office fit-outs on sites such as Imperial Business Park (to the north-east of Painters Ash) add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it.

What to look for in a quote

  • Do they follow the manufacturer’s priming guidance?
  • How they handle RAMS and site documents
  • Their approach to joint depth and backing
  • Are they CHAS accredited or on Constructionline?

How to choose a sealant contractor

Accreditations

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