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

Fire Stopping in Lambs Green

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

  • Seals disturbed by maintenance and left open
  • Penetration schedules that need working through
  • Improvised or mixed-product fire seals
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
Constructionline member
£5m public liability

Fire stopping for businesses in Lambs Green

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

When something else is needed

Before quoting, we check that sealant is the right answer. It won’t put right:

  • Designing or specifying fire stopping, which sits with the designer or fire engineer
  • Issuing fire ratings or certificates for seals
  • Walls or floors that aren’t fire-resisting to begin with

If you are not sure, just call the office on 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

Joints and surfaces we work on

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

How we handle fire stopping in Lambs Green

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. If you are dealing with head-of-wall gaps with no fire seal and fire-rated sealant that has cracked or shrunk back, we can help, whatever the surface. Looking for mastic applicators who cover Lambs Green? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.

For a smaller site near Lambs Green, we plan to do all the penetrations in one go, so send the specification and photographs first. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.

Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Lambs Green (RH12)
Wider area
West Sussex
Guarantee
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026

Common questions from Lambs Green clients

Can you take on a job at a hospital such as Crawley Hospital?

Yes. Healthcare sites are among the places we work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Is Holmbush Potteries Industrial Estate, near Lambs Green, within your area?

Yes. We cover Lambs Green and the area around it, including industrial estates, business parks and retail parks such as Holmbush Potteries Industrial Estate. To start, just phone 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.

Do you cover Lambs Green?

Yes. We cover Lambs Green, and you can give us a call on 01277 525 020 or email the details over to get started.

Can you quote from photos?

That depends on the size and complexity of the job. Straightforward work can often be priced from photographs and measurements, while larger or less clear jobs get a site visit first.

Do you take on multi-site work?

Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.

Are you insured?

Yes. We’re fully insured, and the certificate can go with your quote.

How many days will you need on site?

That varies with the scale of the job, but the work normally takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence. Larger or phased jobs take longer, and we will give you a timescale with the quote.

When to call us in Lambs Green

Physical damage is another reason seals stop doing their job. Maintenance work can knock a seal, cut it back for an extra cable or remove it with an old pipe and the opening isn’t always resealed.

Clients normally get in touch after noticing something like this:

  • Old intumescent sealant that has split away
  • Fire stopping installed outside its tested range
  • Openings left by services added after handover
  • Fire-stopping items raised at inspection or handover

On a hospital site such as Crawley Hospital (2.7 miles east of Lambs Green), fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.

Comparing quotes

  • How they’ll work around occupants
  • Will RAMS and insurance details be available?
  • Proof of insurance
  • Are they CHAS accredited or on Constructionline?

Questions to ask before you appoint anyone

Our process

Tell us your site hours and access windows and we’ll plan around them. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. Jobs in and around smaller places like Lambs Green are usually planned as a single visit, so photos and measurements up front really help. That way the right products come on the day.

  1. We read the specification, drawings or penetration schedule you send and ask about anything unclear.
  2. On site, each opening is checked against the tested detail it is meant to follow.
  3. Unsuitable fillers and loose debris are taken out of each opening.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

Preparing the site

  • Have the specification and drawings to hand
  • Arrange parking or a loading space
  • Tell us which areas need to stay in use

Quotes

Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. For smaller jobs, photos and a description will do.

Get a quick quote

Read more

Cost factors for service penetrations

These are the things that shape the price:

  • Whether old sealant has to be cut out first
  • Backing rod, priming and other preparation
  • Induction, permit and paperwork requirements
  • Any access equipment needed

Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.

Details that help us quote

To price the job accurately, we need a clear picture of the site. Send us:

  • The type of building and who uses it
  • Rough lengths or quantities, or drawings if you have them
  • Asbestos survey details if the building is older
  • When you need the work done

Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. For a chat about it beforehand, ring 01277 525 020 or email a schedule or drawings.

Compartment walls and floors in Lambs Green

Lambs Green lies roughly 27 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. Fire stopping of openings and penetrations in England falls under Approved Document B. 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. What we install is set by the specification, and it goes in to the tested detail.

Where a unit on an estate such as Holmbush Potteries Industrial Estate, 1.7 miles south-east of Lambs Green, has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail. Holiday works at schools like Rusper Primary School often leave service openings to seal before pupils return.

Lambs Green is about 3 miles west of Crawley, in West Sussex. We cover Lambs Green, with the same fixed quotes and 12-month guarantee as everywhere else. 373 places across West Sussex fall within our area, Lambs Green among them. Brighton is covered too, around 20 miles from Lambs Green.

Business premises anywhere in RH12 are within our area. If your building is just outside Lambs Green, we cover Rusper (1 mile west), Ifieldwood (1 mile north-east), Bewbush (2 miles south-east), Ifield (2 miles east) and Russ Hill (2 miles north). A short drive away, we cover Crawley (3 miles east), Horsham (4 miles south-west), Haywards Heath (11 miles south-east), Burgess Hill (12 miles south-east), East Grinstead (11 miles east) and Broadfield (3 miles south-east).

Landmarks near Lambs Green

We work on buildings around Ifield Community College, among other places. For rail, the closest station is Faygate station, about 1.4 miles south of the centre. A little further out are Crawley Museum (3.1 miles east) and Crawley Hospital (2.7 miles east). Open spaces near Lambs Green include Warnham LNR and Tilgate Lake.

Map of Lambs Green © OpenStreetMap contributors

Owners, agents and contractors

Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.

Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Sites in Lambs Green can sit alongside others in a wider programme.

Why deal with it now?

An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. Putting it right is typically a modest job when the openings are accessible. Wait until ceilings close or areas are occupied and the same work becomes harder to reach. Converted and older buildings near places like Lambs Green tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.

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

Why appoint us

  • Public liability insurance in place
  • 12-month guarantee on workmanship
  • Products installed to the manufacturer’s instructions
  • One number for every site we cover

Take a look at how commercial sealant jobs are priced or how we’re accredited.

Accreditations

Trusted. Accredited. Insured.