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

Fire stopping in Great Hormead

Work needed on a service penetration in Great Hormead? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Head-of-wall gaps with no fire seal
  • Fire sealant pulled out of the opening
  • Seals disturbed by maintenance and left open
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Fire stopping across Great Hormead

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

What sets the cost

Quotes vary with the job. Expect it to depend on:

  • Access and working height
  • Joint width, depth and condition
  • Whether old sealant has to be cut out first
  • The product specified

Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

Details that help us quote

Good information means a firmer quote. Helpful details to send:

  • Any specification or named product
  • Anything awkward about access or site hours
  • Asbestos survey details if the building is older
  • Rough lengths or quantities, or drawings if you have them

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Fire stopping in Great Hormead

It helps to set out our role at the start. Deciding the specification sits with the designer, the fire engineer and building control. What we bring is careful installation of the specified sealant, to the maker’s guidance. If you have expanding foam used as fire stopping and seals disturbed by maintenance and left open, we can help, on pipe penetrations, service gaps in risers and linear gaps at wall heads alike. A specialist sealant contractor works differently from a general builder: on jobs in Great Hormead, preparation and product choice get the time they need.

Barn and farm-building conversions near places like Great Hormead often combine new partitions with old walls. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Great Hormead (SG9)
Region
Hertfordshire
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026

When something else is needed

Some faults sit outside our scope, and we point that out rather than sealing over them:

  • Issuing fire ratings or certificates for seals
  • Fire doors, dampers or other fire safety equipment
  • Construction that lacks the fire resistance the seal relies on

If in doubt, call the office on 01277 525 020 or email drawings and photos and we’ll say what we think.

Surfaces we seal

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

FAQs: Great Hormead

Will you take on work at estates like Watermill Industrial Estate, close to Great Hormead?

Yes, sites like Watermill Industrial Estate are within our area, along with the rest of Great Hormead. Send details of the unit and the work through our quote form for a quick quote.

Is Great Hormead off your patch?

No. Places such as Great Hormead are covered as much as the big towns. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.

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.

Do you seal on top of existing sealant?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.

Are you members of a third-party fire-stopping installer scheme?

No, and we won’t imply otherwise. Some clients require third-party installer schemes even though the law doesn’t. Where it isn’t required, we install the specified sealant to the maker’s details.

Is BS 476 being phased out?

In England, references to the older BS 476 national classes are being removed from Approved Document B from 2 September 2029. The European route, BS EN 13501-2, then applies. Product selection stays with your designer.

Is your workmanship covered by a guarantee?

Yes, for 12 months. If a joint fails because of how we installed it, we come back and put it right.

Building owners, agents and FMs in Great Hormead

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.

When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.

Different surfaces, different methods

Risers and ceiling voids

Risers and ceiling voids hold most of a building’s service penetrations. Access is often tight, so we agree it with you in advance along with any permits your site needs.

Small ducts

Ducts are only sealed with sealant where the detail allows it. The ductwork, its supports and any dampers are for the ductwork contractor.

General trades versus 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.

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

Where services cross fire walls in Great Hormead

Approved Document B is the English guidance that covers fire stopping around openings and penetrations. 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. Great Hormead is about 32 miles from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls.

Holiday works at schools like Hormead Church of England (VA) First School often leave service openings to seal before pupils return. Halls and meeting rooms at places like Church of St Nicholas sometimes gain new services, and any compartment wall crossed needs the specified seal. For a unit at a site such as Watermill Industrial Estate (2.6 miles west of Great Hormead), new power or data runs between office and warehouse can breach a compartment wall.

Great Hormead is in Hertfordshire. Across the SG9 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 371 places in Hertfordshire, large and small. Our London page has more on work in that area, about 32 miles away.

Business premises anywhere in SG9 are within our area for service penetrations. Buildings on Anderson's Lane, Halfacre Lane and Horseshoe Lane are within our area for service penetrations. If your building is just outside Great Hormead, we cover Daw's End (1 mile north), Anstey (2 miles north), Wyddial (2 miles north-west), Layston (2 miles west) and Brent Pelham (2 miles east). A short drive away, we cover Stevenage (10 miles west), Bishop's Stortford (8 miles south-east), Welwyn Garden City (14 miles south-west), Hitchin (13 miles west), Hoddesdon (14 miles south) and Hertford (12 miles south-west).

Landmarks near Great Hormead

In Great Hormead, that means premises near The Beehive pub and the streets around them. A little further out are Brent Pelham (1.7 miles north-east).

Map of Great Hormead © OpenStreetMap contributors

On site: what to expect

We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. Rural sites near Great Hormead may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. We ask for the product and detail your designer has specified.
  2. We sort the openings by the detail each one needs.
  3. Old or wrong materials are cut out.
  4. Where the detail needs backing, it goes in at the stated depth.
  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.

What we need from you

  • For older buildings, check the asbestos register before work
  • Move anything stored against the joints
  • Flag any permit to work we’ll need

Request a quote

To get a fixed quote, give us a call on 01277 525 020 or email the details over with the site address and an outline of the work. Our quote form is another easy route.

Ask for a quote

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