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

Fire Stopping in High Garrett

Our CSCS-carded applicators take on fire-rated and intumescent sealing of service penetrations and linear gaps in High Garrett and the surrounding area. Send details for a fixed quote.

  • Seals disturbed by maintenance and left open
  • Unsealed joints where partitions meet the slab
  • Expanding foam used as fire stopping
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.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Fire stopping for businesses in High Garrett

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

How a job runs

Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. For work around High Garrett, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  1. The specification and schedule come first, so we know which details apply.
  2. Access, permits and the order of areas are agreed with the site team.
  3. We compare every service penetration with its tested detail before sealing.
  4. Unsuitable material is removed and the opening cleaned so the seal starts clean.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. We tell you about openings that need a different product.

Before we start on site

  • Clear stock, furniture or equipment away from the joints
  • Tell staff and tenants when we’ll be in
  • Confirm the product named in the specification

Quotes

The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or call 01277 525 020 or send photos by email to discuss it first.

Get a quick quote

Read more

Fire stopping for commercial buildings in High Garrett

A lot of fire-stopping work comes after M&E installation, a refit or a tenant fit-out. New cable runs, replaced pipework and extra data routes all punch holes in compartment walls, often unnoticed. We close the openings listed on your schedule, using the specified sealant and detail. We work on joints between fire-resisting walls and floors, service gaps in risers and pipe penetrations, and what we are called in for most is old intumescent sealant that has split away and fire-stopping items raised at inspection or handover. For commercial sealant work in High Garrett, you deal with one contact from quote to sign-off, whether it’s one building or several.

Rural conversions around High Garrett 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.

Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and the quote explains what it covers.

Location
High Garrett (CM7)
Wider area
Essex
Cover
12 months on our workmanship
Quotes
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

After the work

Sealant joints are maintenance items, and how long they last depends on how they’re treated. Our advice:

  • Flag new cables with no seal around them
  • Include service cupboards in routine inspections
  • Get seals inspected before ceilings and boxing close
  • Settle who seals which penetrations at the start of a project

Don’t patch a fire-rated seal with anything outside its tested detail. A repair should use the original product, installed the same way, or a new specification from the designer.

Make reporting new openings part of every permit to work in service areas. Small habits like this stop openings building up.

How the quote is worked out

The price varies from site to site. Expect it to depend on:

  • Location, for remote and island sites
  • How accessible the joints are
  • How much there is to seal
  • Backing rod, priming and other preparation

We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote.

What to include in your enquiry

Diagnosis starts before we arrive. Let us know:

  • Approximate linear metres or a joint schedule
  • Whether an asbestos survey exists
  • Anything awkward about access or site hours
  • The site address and postcode

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. For smaller jobs, photos and a description will do.

Commercial clients in High Garrett

If you look after buildings for someone else, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.

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.

Fire stopping around High Garrett: what changes locally

High Garrett lies roughly 40 miles out 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. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. 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. Either way, we install the specified product to its tested detail.

Where a unit on an estate such as Springwood Industrial Estate, which lies south-west of High Garrett, has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail. Theatres, wards and plant rooms at sites like Braintree Community Hospital (to the south-west of High Garrett) all have compartment walls crossed by services.

High Garrett is about 2 miles north of Braintree, in Essex. Our applicators travel to High Garrett for work on service penetrations. We work across 644 places in Essex. Our London page has more on work in that area (40 miles or so).

We cover the CM7 postcode districts. Among the streets we cover are High Garrett, Grove Field and Sunnyfields Road, and sites on any of them can send details for a fixed quote. We also cover Bocking Churchstreet (1 mile south-west), Gosfield (2 miles north), Beazley End (2 miles north-west), Church End (3 miles west) and Shalford (4 miles north-west). Bigger towns within reach include Colchester (14 miles east), Chelmsford (13 miles south), Maldon (13 miles south), Witham (8 miles south), Camulodunum (13 miles east) and Halstead (3 miles north-east).

Local landmarks in High Garrett

Locally, jobs take us to sites close to Tabor Academy and Bocking Blackwater, among other places. The closest station to High Garrett is Braintree station, roughly 2.6 miles south. Other landmarks nearby include Tudor House Museum (Braintree) (1.7 miles south-west) and Braintree Community Hospital (2.6 miles south-west). For a walk, there’s Belcher's and Broadfield Woods.

Map of High Garrett © OpenStreetMap contributors

Signs you need fire stopping in High Garrett

Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Movement in the frame or slab can open the joint, and the wrong product can split as a result. Linear joint details set a width range and movement capability, and the seal has to sit within them.

Any of the following is a good reason to get the joints checked over:

  • Openings left by services added after handover
  • Fire seals cut back for extra cables and never reinstated
  • Improvised or mixed-product fire seals
  • Unsealed penetrations discovered above suspended ceilings

For a school such as Bocking Church Street Primary School, penetration sealing fits best at the end of the summer works.

What to look for in a quote

  • Are they CHAS accredited or on Constructionline?
  • Do they follow the manufacturer’s priming guidance?
  • Proof of insurance
  • How joint depth will be controlled

Questions to ask before you appoint anyone

FAQs: High Garrett

Is High Garrett off your patch?

Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.

How does the removal of BS 476 from Approved Document B affect fire-rated sealing in High Garrett?

Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.

Are your applicators CSCS-carded?

Yes. We use CSCS-carded applicators, as many construction sites ask for.

How long will the new sealant last?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.

How long before the joints can be used?

Curing time varies by product, and we confirm it on the day.

Can you handle several sites?

Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.

What will the job cost?

That depends on the job: quantities, access, the product and any phasing. Call for a quote.

What sealant work can’t fix

A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is one of these:

  • Plastic pipes whose detail calls for a collar or wrap
  • Gaps in walls that were never built as compartment walls
  • Fire risk assessments, a job for a competent assessor

If in doubt, call 01277 525 020 or email drawings and photos and we will say what we think.

Surfaces we seal

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

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