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

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

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

  • Fire-stopping items raised at inspection or handover
  • Damaged fire seals in risers and voids
  • Open linear gaps along the top of fire-resisting walls
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Fire stopping across Falmer

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

Fire stopping in Falmer, done properly

It helps to set out our role at the start. The designer, fire engineer or building control decides which fire stopping is required; sign-off sits with them too. We fit the specified fire-rated sealant following that specification and the maker’s installation guidance on sites in Falmer. If you have seals disturbed by maintenance and left open and seals that don’t match their tested detail, we can put it right. A single leaking joint is often how a building in Falmer first comes to us: we look at the rest while we are there and tell you what we find.

Rural conversions around Falmer can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Place
Falmer (BN1)
Region
East Sussex
Guarantee
A 12-month guarantee
Price
A fixed quote before we start
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Building owners, agents and FMs in Falmer

Building owners and managing agents use us on sealant work across single buildings or whole portfolios around Falmer. Several sites can go on one quote, which keeps the paperwork simple.

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.

Questions about Falmer

Is Falmer too far out for you?

Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.

Can work in a care setting near Falmer go ahead while residents are there?

Yes, with the manager deciding the order and timing of rooms. Tell us about any infection-control or safeguarding requirements and we will work to them.

What about RAMS and site documents?

Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we will confirm them with the quote.

Do you take on small jobs?

We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.

Will you write the fire-stopping specification?

No, we don’t design fire stopping. With the designer’s details in hand, we can price the sealant elements, and tell you if a detail needs another product.

Do you need to see the site first?

Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we will arrange a visit.

How do we ask for a quote?

It works in four steps: send details, get a quote, we seal, guaranteed. The first step only needs photographs and a postcode.

Aftercare for building managers

For the best life from the joints:

  • Ask the designer to confirm details early on refits
  • Foam or ordinary sealant is never a fire-seal repair
  • Brief every trade that openings they make must be sealed
  • Check risers and ceiling voids after each round of works

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.

Looking at service areas on a regular cycle pays off. A cracked or disturbed seal found early is a small job compared with dozens found at once.

What we can’t put right

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Gaps in walls that were never built as compartment walls
  • Signing off or certifying a building’s fire stopping
  • Designing or specifying fire stopping, which sits with the designer or fire engineer

Not sure which it is? You can phone 01277 525 020 or use the quote form and we will tell you honestly.

Surfaces we seal

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

Diagnose, treat, sign off

Before we leave any area, we remove the tape, clean down and inspect every joint. Where the sealant needs time to cure before use, we tell you and sign the area. Smaller jobs around Falmer can be grouped with others nearby. You’ll have a fixed quote before work starts.

  1. We read the specification, drawings or penetration schedule you send.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  3. Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  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

  • Send asbestos survey details if the building is pre-2000
  • Explain the parking and delivery arrangements
  • Move anything stored against the joints

Request a quote

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.

Get a price

Related advice

What sets the cost

We price every job individually. The things that drive the figure:

  • Any access equipment needed
  • The site’s rules and procedures
  • Working within restricted access windows
  • Location, for remote and island sites

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Details that help us quote

The more we know, the firmer the quote. Helpful details to send:

  • Whether the building will be occupied during the work
  • Your programme or deadline
  • Approximate linear metres or a joint schedule
  • A wide shot and a close-up of the area

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

Fire-rated sealing for Falmer buildings

The 2 miles around Falmer include three care or nursing homes. Care homes rely on fire-resisting walls and floors, and maintenance work that breaks through them leaves openings to seal. We install fire-rated sealant to the tested detail where it is specified. In England, Approved Document B covers fire stopping of 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.

Colleges such as Downs View Link College, 2.9 miles west of Falmer, add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product. Campus buildings at universities such as University of Sussex, less than half a mile to the north-west of Falmer, see constant changes to data and services, and fire-rated sealant goes in around new penetrations where it is specified. In a retail centre such as Pavilion Retail Park, which lies south-west of Falmer, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail.

Falmer is about 3 miles north-east of Brighton, in East Sussex. Businesses, contractors and managing agents in Falmer can call on us for service penetrations. We work across 308 places in East Sussex.

Postcode districts covered here: BN1. Buildings on Middle Street, Park Street and Mill Street are within our area for service penetrations. Sites close to Falmer are covered too, including Kingston near Lewes (2 miles east), Iford (3 miles east), Ovingdean (3 miles south), Rottingdean (3 miles south) and Roedean (3 miles south). Nearby towns on our patch include Seaford (10 miles south-east), Lewes (4 miles east), Hailsham (15 miles east), Uckfield (11 miles north-east), Newhaven (7 miles south-east) and Peacehaven (6 miles south-east).

Landmarks near Falmer

Around Falmer, our work takes us to commercial buildings near Stanmer Park, University of Sussex Library and The Swan Inn. There’s a railway station in Falmer itself: Falmer station. Other landmarks nearby include Brighton General Hospital (2.8 miles south-west) and Brighton And Hove Albion Football Club Museum (under half a mile south-west). For a walk, there’s Bevendean Down and Newmarket Hill.

Map of Falmer © OpenStreetMap contributors

How the job changes by surface

Drylining partitions

Holes in board are often cut larger than needed. If the gap exceeds the tested range, sealant alone won’t do and we will tell you what the detail says instead.

Small ducts

Ducts are only sealed with sealant where the detail allows it. Dampers and ductwork systems themselves are outside our work.

Accreditations

Trusted. Accredited. Insured.