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

Fire-rated sealing and fire stopping in Leigh, Surrey

Looking for fire stopping in Leigh? It’s simple: send details, get a quote, we seal, guaranteed.

  • Fire sealant pulled out of the opening
  • Unsealed joints where partitions meet the slab
  • Non-fire-rated filler around services
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Fire stopping near Leigh

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

Leave it or put it right?

An improvised seal can look finished while offering no tested performance. Correcting it means cutting it out and starting again with the specified product, and doing it once, properly, is cheaper. Around Leigh, it’s better to renew all the failing joints at once, rather than one at a time. Send photographs of each area and we will quote for the lot.

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

What you get with us

  • A fixed quote before work starts
  • Fully insured, including public liability cover
  • Health and safety: CHAS accredited
  • Workmanship guaranteed for 12 months

Read what affects the cost or our accreditations.

Fire stopping in Leigh, done properly

A fire-rated sealant is only one part of a tested system: the evidence covers a specific product, wall or floor type, service, gap, depth and backing. We match each opening to that detail before any sealant goes in. If you have old intumescent sealant that has split away and openings left by services added after handover, we can put it right. Whoever orders the work in Leigh, the brief is typically the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Around smaller places like Leigh, penetration seals come up in schools, halls, pubs with rooms, care homes and farm buildings used as offices. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Leigh (RH2)
Wider area
Surrey
Cover
12 months on our workmanship
Quotes
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026

Work for main contractors and building owners

Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, and each stage is agreed with your contact.

Diagnose, treat, sign off

The first thing on site is a walk round with your contact, agreeing which joints are in scope, where to start and what must stay open. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. Smaller jobs around Leigh 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. We fit the backing the detail asks for, to the stated depth.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

What we need from you

  • Warn occupants and staff about the work
  • Clear stock, furniture or equipment away from the joints
  • Point out parking and an unloading spot

Request a quote

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

Get a price

Advice

Signs you need fire stopping in Leigh

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 a product not tested for that movement may crack. The tested detail for a linear joint states the width and movement it covers.

Common reasons buildings call us in:

  • Fire-stopping items raised at inspection or handover
  • Seals disturbed by maintenance and left open
  • Expanding foam used as fire stopping
  • Improvised or mixed-product fire seals

Office fit-outs on sites such as Fontigarry Farm Business Park, 2.4 miles east of Leigh, add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it.

Comparing quotes

  • How long is the guarantee, and what does it include?
  • Their public liability cover
  • How they’ll work around occupants
  • Which product they’ll use, and why it suits the joint

Our contractor checklist

What we can’t put right

Sealant solves a lot, but not everything, and we’re upfront when that’s the case. It won’t fix:

  • Designing or specifying fire stopping, which sits with the designer or fire engineer
  • Large openings beyond what any sealant detail covers
  • Reviewing a building’s overall fire safety

If in doubt, ring 01277 525 020 or email drawings and photos and we’ll say what we think.

Where we work in Leigh

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

Fire stopping around Leigh: points for this area

Leigh lies roughly 21 miles out 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. 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. We install whatever has been specified, to the product’s tested detail.

Older community buildings such as Church of St Bartholomew that have been rewired or given new heating can have service gaps through walls worth checking against the specification. For a school such as Burys Court School, penetration sealing fits best at the end of the summer works.

Leigh is about 3 miles south-west of Reigate, in Surrey. We send applicators to Leigh for service penetrations. Across Surrey, 379 places are covered, including Leigh. Sites around London have their own page, about 21 miles away.

If you need fire stopping in RH2, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Streets here include Church Road, Smalls Hill Road and The Glebe. Nearby places we also cover include Dawesgreen (1 mile north-west), Bunce Common (1 mile west), Irons Bottom (2 miles east), Strood Green (2 miles north-west) and Sidlow (2 miles east) for service penetrations. Further afield, our area takes in Guildford (14 miles west), Epsom (9 miles north), Horley (4 miles south-east), Redhill (4 miles north-east), Ewell (10 miles north) and Reigate (3 miles north-east).

Around Leigh

Locally, jobs take us to sites close to The Seven Stars Public House. The nearest railway station is Betchworth station, about 2.9 miles north of the centre. Well-known places in the area include Reigate Priory Museum (2.7 miles north-east) and East Surrey Hospital (3.7 miles east). Green spaces nearby include Reigate Heath and Colley Hill.

Map of Leigh © OpenStreetMap contributors

When to bring in a specialist

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

Questions we’re asked in Leigh

What happens to BS 476 references for fire stopping in Leigh?

Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.

Will you plan work around the academic year at somewhere like Reigate College?

Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

Can you quote from photographs?

Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we will arrange a visit.

When can the area be used after sealing?

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

What hours do you work?

The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

Do you hold CHAS accreditation?

Yes. We’re CHAS accredited and a Constructionline member, which helps with supplier vetting.

Accreditations

Trusted. Accredited. Insured.