New Eltham fire stopping
Work needed on a service penetration in New Eltham? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Fire-rated sealant that has cracked or shrunk back
- Unsealed joints where partitions meet the slab
- Builders’ foam or ordinary silicone in compartment walls
Fire stopping in New Eltham
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Fire stopping in New Eltham, done properly
The test standards are BS EN 1366-3 for penetration seals and BS EN 1366-4 for linear joints. A rating such as EI 60 only holds when the product is installed as it was tested. So our job is to reproduce that arrangement faithfully. We work on pipe penetrations, cable penetrations and small duct penetrations where the tested detail allows, and the usual reasons a site gets in touch are open linear gaps along the top of fire-resisting walls and unsealed openings around new pipes and cables. Searching for sealant specialists in New Eltham? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
In London, higher-risk residential buildings under the Building Safety Act bring extra scrutiny of fire-stopping records. We install what the designer or fire engineer has specified, and if you need records of the work, tell us and we’ll confirm with the quote.
We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.
- Location
- New Eltham (SE9, DA15, BR7)
- Wider area
- Greater London
- Guarantee
- 12 months on every job
- Quote
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
What sets the cost
The price varies from site to site. Expect it to depend on:
- Phasing around occupants
- The site’s rules and procedures
- How much there is to seal
- How much existing material needs removing
The price depends on how many linear metres there are, how much old material needs removing and the access. Call for a fixed quote when you are ready.
Details that help us quote
However big the job, the same details help:
- Approximate linear metres or a joint schedule
- A wide shot and a close-up of the area
- How the joints are reached, and at what height
- The asbestos register, for older buildings
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, ring 01277 525 020 or use the quote form.
Work for main contractors and building owners
If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.
We work for building owners and managing agents on sealant work across single buildings or whole portfolios. One quote can cover more than one site, which keeps the paperwork simple.
Common questions from New Eltham clients
Is Green Lane Business Park, near New Eltham, within your area?
Yes. Our area takes in New Eltham and its surroundings, with estates and business parks such as Green Lane Business Park included. Send details of the unit and the work through our quote form for a quick quote.
Can you work around term dates at a campus such as University of Greenwich - Avery Hill?
Yes. We plan campus work around teaching, exams and residence turnarounds. Let us know which documents your site asks for, and we will confirm them alongside the quote.
Can you seal any opening with fire-rated sealant?
No. It depends on the tested detail for that wall or floor and service. Collars, wraps, batts and boards exist for openings sealant doesn’t cover.
Does weather matter for sealant work?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
How do you deal with asbestos in old sealant?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.
Compartments and services around New Eltham
New Eltham has several hotels close by, all within 2 miles. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. What we install is set by the specification, and it goes in to the tested detail.
Workshops and IT rooms at colleges like Rose Bruford College, 1.6 miles to the east of New Eltham, are re-serviced often, leaving penetrations to seal. Tenant changes at parks like Green Lane Business Park (less than half a mile west of New Eltham) bring new data and services, and openings through fire-resisting walls need the specified seal.
New Eltham is about 1 mile south-east of Eltham, in Greater London. Our applicators travel to New Eltham for work on service penetrations. New Eltham is one of 764 places in Greater London on our list. Our London page has more on work in that area.
If you need fire stopping in SE9, DA15 and BR7, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. If your site is on Green Lane, Gerda Road and Novar Road or close by, send details and we will quote for service penetrations. Close to New Eltham, our area also takes in Eltham (1 mile north-west), Longlands (1 mile south-east), Coldharbour (1 mile south-west), Avery Hill (1 mile north) and Blackfen (1 mile north-east). Further afield, our area takes in London (8 miles north-west), City of Westminster (11 miles north-west), Marylebone (11 miles north-west), Kensington (13 miles west), St Pancras (10 miles north-west) and Shoreditch (9 miles north-west).
Near you in New Eltham
Locally, jobs take us to sites close to Elmstead Wood and St Thomas More Catholic Comprehensive School, among other places. There’s a railway station in New Eltham itself: New Eltham station. Nearby you’ll also find Metropolitan Police Museum (1.4 miles east) and Eltham Community Hospital (1.1 miles north-west). Not far away are Summer Hill and The Tarn.
Diagnose, treat, sign off
Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. For a job in New Eltham, access comes first. Send the building rules and access times with your enquiry.
- We read the specification, drawings or penetration schedule you send.
- On site, each opening is checked against the tested detail it is meant to follow.
- Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
- We fit the backing the detail asks for, to the stated depth.
- We apply the specified sealant to the depth and around the services as the detail shows.
- If an opening needs something other than sealant, we tell you instead of improvising.
Before we start on site
- Let building users know which areas are affected
- Send asbestos survey details if the building is pre-2000
- Flag any permit to work we’ll need
Getting a fixed quote
A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or speak to us on 01277 525 020 or email drawings and photos if you’d rather talk the job through.
Related advice
Do you need fire stopping in New Eltham?
On a busy project, programme pressure can mean fire stopping is rushed or left to whichever trade is closest. That is how unsuitable products and improvised details end up in compartment walls.
Any of the following is a good reason to get the joints checked over:
- Non-fire-rated filler around services
- Openings found when ceilings come down for a refit
- Snag lists that include open service penetrations
- Openings left by services added after handover
In a hotel such as The Eltham Hotel, 1.1 miles to the north of New Eltham, new pipework or cabling through bedroom and corridor walls needs sealing with the specified product.
Questions to ask before you book
- Health and safety accreditation such as CHAS
- What site paperwork they can supply
- Which product they’ll use, and why it suits the joint
- How long is the guarantee, and what does it include?
Why act early in New Eltham
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. In New Eltham, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.
A quote for service penetrations depends on quantities, condition and access, plus any specification you’re working to. Call for a quote.
Why clients in New Eltham choose us
- Over 20 years of commercial sealing
- Our applicators hold CSCS cards
- Failed material removed, not covered up
- Products installed to the manufacturer’s instructions
Take a look at what affects the cost or our accreditations.
What the job involves on each surface
Masonry and concrete
Core-drilled holes are neat; broken-out ones rarely are. Each gap is measured where it is widest so we know it sits within the tested range, and any that don’t are flagged.
Small ducts
We seal around ducts only within what the tested detail covers. Dampers and ductwork systems themselves are outside our work.