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

Fire-rated sealing and fire stopping in Chartridge, Buckinghamshire

Fire-rated and intumescent sealing of service penetrations and linear gaps across Chartridge, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • Damaged fire seals in risers and voids
  • Fire-stopping items raised at inspection or handover
  • Seals that don’t match their tested detail
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
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 accredited
Fully insured: £5m PL

Fire stopping across Chartridge

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

About our fire stopping in Chartridge

Opened ceilings and riser doors often reveal service openings nobody sealed. If a specification already covers those walls and floors, we can reseal to it using the product and detail it sets out. Where there isn’t one, the designer or fire engineer needs to set one first. Site teams most often ask us about expanding foam used as fire stopping and service penetrations left open after M&E works, on joints between fire-resisting walls and floors, service gaps in risers and pipe penetrations. Whoever orders the work in Chartridge, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Barn and farm-building conversions near places like Chartridge often combine new partitions with old walls. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.

Our workmanship is guaranteed for 12 months. If a joint we sealed fails because of how it was installed, we come back and put it right.

Where
Chartridge (HP5)
Wider area
Buckinghamshire
Guarantee
A 12-month guarantee
Price
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What happens if it’s left?

An improvised seal can look finished while offering no tested performance. Correcting it means cutting it out and starting again with the specified product, and doing it once, properly, is cheaper. Halls, stores and units around places like Chartridge may not be checked every day, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.

What you get with us

  • 12 months’ guarantee on every job
  • Fully insured
  • Health and safety: CHAS accredited
  • Clear, fixed quotes

Read what affects the cost and how we’re accredited.

Quoting for work in Chartridge

What shapes the price:

  • How much there is to seal
  • The product specified
  • Joint width, depth and condition
  • Any access equipment needed

Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.

What we need to price the job

Whether it’s one area or a whole building, the same details help:

  • Whether an asbestos survey exists
  • Anything awkward about access or site hours
  • The site address and postcode
  • A wide shot and a close-up of the area

The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or ring 01277 525 020 or send photos by email if you’d rather talk the job through.

Do you need fire stopping in Chartridge?

Plenty of openings were simply never closed. They come to light during inspections, refits or when another trade lifts a tile.

Typical triggers for a call:

  • Fire stopping installed outside its tested range
  • Old intumescent sealant that has split away
  • Unsealed joints where partitions meet the slab
  • Builders’ foam or ordinary silicone in compartment walls

At a healthcare site like Chiltern Hospital, which lies south-west of Chartridge, new services through compartment walls are a constant, and each needs the specified seal.

Comparing quotes

  • How joint depth will be controlled
  • Their plan for phasing and protecting the area
  • Do they follow the manufacturer’s priming guidance?
  • How the existing material will be dealt with

Our contractor checklist

Honest limits

Not every problem is a sealant problem, and we’d rather tell you before you spend money. These need a different solution:

  • Openings that need collars, wraps, batts or boards rather than sealant
  • Designing or specifying fire stopping, which sits with the designer or fire engineer
  • Approving the work on behalf of building control

Not sure which it is? You can ring 01277 525 020 or send photos by email and we’ll tell you honestly before you book.

Where we work in Chartridge

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

Site staff or a sealant specialist?

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

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

From enquiry to sign-off

When we get to site, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, with the work itself usually taking a single visit for a short list of penetrations, or a phased programme for a whole building. Rural sites near Chartridge may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.

  1. The specification and schedule come first, so we know which details apply.
  2. We plan the sequence of floors, risers and voids with you.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Unsuitable material is removed and the opening cleaned first.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. Anything outside the detail is reported to you rather than sealed.

Getting the site ready

  • Let us know about inductions and permits
  • Let building users know which areas are affected
  • Agree which areas must stay open

Request a quote

Send us photos, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Get a quick quote

Advice

Where services cross fire walls in Chartridge

Fire stopping of openings and penetrations in England falls under Approved Document B. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. What we install is set by the specification, and it goes in to the tested detail. Chartridge is about 28 miles from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls; the gaps need the specified seal.

Tenant changes at parks like Waterside Business Park, 2.3 miles to the south-east of Chartridge, bring new data and services, and openings through fire-resisting walls need the specified seal. Holiday works at schools like Chartridge Combined School often leave service openings to seal before pupils return.

Chartridge is about 2 miles north-west of Chesham, in Buckinghamshire. We cover commercial sites throughout Chartridge, for single jobs and planned programmes alike. Chartridge is one of 308 places in Buckinghamshire on our list. We also cover Reading, around 24 miles from Chartridge.

Anyone looking for fire stopping in HP5 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. We cover commercial and managed buildings on Chartridge Grange Drive and Cogdells Lane. If your building is just outside Chartridge, we cover Asheridge (1 mile north-east), Bellingdon (1 mile north), Hundridge (1 mile south), Ballinger Common (1 mile west) and Pond Park (1 mile east). A short drive away, we cover Aylesbury (10 miles north-west), High Wycombe (8 miles south-west), Marlow (12 miles south-west), Amersham (4 miles south-east), Beaconsfield (8 miles south) and Chalfont St Peter (9 miles south-east).

What’s near Chartridge

We work on buildings around Chiltern Hills Academy and The Bell pub, among other places. For rail, the closest station is Great Missenden station, about 3.1 miles south-west of the centre. Nearby you’ll also find Roald Dahl Museum and Story Centre (3 miles south-west) and Hawridge Court (1.5 miles north-east). For a walk, there’s Pavis Wood and Sands Bank.

Map of Chartridge © OpenStreetMap contributors

Questions about Chartridge

Is Chartridge off your patch?

Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Good photographs up front let us bring everything on the first visit.

Can you work at a site such as Waterside Business Park, by Chartridge?

Yes, sites like Waterside Business Park are within our area, along with the rest of Chartridge. Send details of the unit and the work through our quote form for a quick quote.

Is your workmanship covered by a guarantee?

Yes. Our workmanship is backed for 12 months.

What happens if old sealant might contain asbestos?

Managing asbestos is the dutyholder’s responsibility, so we’ll ask for the register before work on an older building. If anything suspect turns up, we stop until it’s tested.

How long do sealant joints last?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

Will fire-rated sealant work on every penetration?

No. A sealant’s evidence covers set services, gaps and wall or floor types. If an opening falls outside, it needs another solution, as set out by the designer.

Is the BS 476 change in 2029 relevant to fire stopping?

For buildings in England, Approved Document B removes BS 476 references from 2 September 2029. Classification to BS EN 13501-2 becomes the expected evidence, though transitional rules apply. In Scotland, the Technical Handbook sets its own guidance, including clause 2.1.14 on service penetrations.

Accreditations

Trusted. Accredited. Insured.