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

Fire-rated sealing and fire stopping in Crowhurst, East Sussex

Fire-rated and intumescent sealing of service penetrations and linear gaps in Crowhurst and across East Sussex. CHAS accredited and fully insured, with a 12-month guarantee.

  • Fire-stopping items raised at inspection or handover
  • Unsealed openings around new pipes and cables
  • Expanding foam used as fire stopping
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS accredited
£5m PL insurance

Fire stopping for businesses in Crowhurst

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

Fire stopping for commercial buildings in Crowhurst

Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We hold no third-party fire-stopping installer certificate, and we won’t pretend otherwise. We install the specified fire-rated sealant to its tested detail, and our workmanship carries a 12-month guarantee. We work on joints between fire-resisting walls and floors, service gaps in risers and pipe penetrations, and what we’re called in for most is openings found when ceilings come down for a refit and fire seals cut back for extra cables and never reinstated. Whoever orders the work in Crowhurst, the brief is normally the same: a clear scope, tidy work and joints that don’t fail again.

Smaller places such as Crowhurst still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. Any service penetration through those walls should be closed with the specified product, set out as its test evidence shows.

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

Place
Crowhurst (TN33)
Region
East Sussex
Guarantee
12 months on our workmanship
Price
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

FAQs: Crowhurst

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

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 work on a hospital site such as Bexhill Hospital?

Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.

How long do sealant joints last?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

How do you deal with asbestos in old sealant?

Managing asbestos is the dutyholder’s responsibility, so for older buildings we ask for the asbestos register first. Work pauses if suspect material is found, until it has been tested.

Do you hold CHAS accreditation?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

How long does a job like this take?

That varies with the scale of the job, but the work typically takes a single visit for a short list of penetrations, or a phased programme for a whole building. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

Can weather delay the job?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

Signs you need fire stopping in Crowhurst

Openings in fire-resisting walls normally appear when services are added or changed. New cabling, rerouted pipework or a data route drilled through a riser can leave the hole behind. Across several fit-outs, the openings add up.

Most enquiries start with one or more of the following:

  • Expanding foam used as fire stopping
  • Hidden openings found during inspections
  • Fire sealant pulled out of the opening
  • Open linear gaps along the top of fire-resisting walls

For a school such as Crowhurst CofE Primary School, penetration sealing fits best at the end of the summer works.

Questions to ask before you book

  • What level of public liability insurance do they hold?
  • Whether their applicators hold CSCS cards
  • Will failed sealant be removed rather than covered?
  • Will RAMS and insurance details be available?

How to choose a sealant contractor

Honest limits

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
  • Openings that need collars, wraps, batts or boards rather than sealant

Not sure which it is? You can call the office on 01277 525 020 or email a schedule or drawings and we’ll tell you honestly before you book.

What we seal

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

Penetration seals near Crowhurst

Crowhurst is about 50 miles from central London. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls; the gaps need the specified seal. In England, Approved Document B covers fire stopping of openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail.

Halls and meeting rooms at places like The Parish Church of St George sometimes gain new services, and any compartment wall crossed needs the specified seal. Offices at parks like Bexhill Enterprise Park (to the south-west of Crowhurst) are re-cabled with each new tenant, and compartment walls need sealing afterwards to the tested detail.

Crowhurst is about 3 miles north-west of Hastings, in East Sussex. We send applicators to Crowhurst for service penetrations. We work across 308 places in East Sussex. Sites around Brighton have their own page, roughly 28 miles from Crowhurst.

Postcode districts covered here: TN33. If your site is on Station Road, Craig Close and Old Forewood Lane or close by, we can quote for service penetrations. If your building is just outside Crowhurst, we cover Green Street (1 mile south-east), Hollington (2 miles south-east), Baldslow (2 miles east), Silverhill (3 miles south-east) and Bulverhythe (3 miles south). Further afield, our area takes in Eastbourne (12 miles south-west), Bexhill-on-Sea (3 miles south-west), Hailsham (11 miles west), St Leonards (3 miles south-east), Polegate (12 miles west) and Hastings Old Town (4 miles south-east).

Around Crowhurst

We work on buildings around The Plough Inn and Claverham Community College and the streets around them. There’s a railway station in Crowhurst itself: Crowhurst station. A little further out are Hastings Castle (4.2 miles south-east) and Bexhill Hospital (2.8 miles south-west). Open spaces near Crowhurst include Church Wood and Robsack Wood and Senlac Hill.

Map of Crowhurst © OpenStreetMap contributors

How the job changes by surface

Drylining partitions

Drylined fire walls are tested in a particular build-up. We check that the product’s detail covers that partition type and board thickness before sealing.

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 flag that rather than guess.

Building owners, agents and FMs in Crowhurst

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first, with CSCS-carded applicators on site.

Diagnose, treat, sign off

Site rules come first: signing in, inductions and any permit to work. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. If others near Crowhurst need work, visits can be combined. You’ll have a fixed quote before work starts.

  1. First we go through the drawings, schedule or specification for the seals and ask about anything unclear.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  3. Unsuitable fillers and loose debris are taken out of each opening.
  4. We fit the backing the detail asks for, to the stated depth.
  5. Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
  6. Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.

What we need from you

  • Warn occupants and staff about the work
  • Arrange parking or a loading space
  • Tell us which areas need to stay in use

Request a quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call 01277 525 020 or email drawings and photos with what you know.

Ask for a quote

Related advice

General trades versus 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.

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.

Accreditations

Trusted. Accredited. Insured.