Fire Stopping in Hampstead
Our CSCS-carded applicators take on fire-rated and intumescent sealing of service penetrations and linear gaps in Hampstead and the surrounding area. Send details for a fixed quote.
- Damaged fire seals in risers and voids
- Hidden openings found during inspections
- Head-of-wall gaps with no fire seal
Need fire stopping in Hampstead?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
About our fire stopping in Hampstead
Fire-rated sealant suits many small service penetrations: copper and steel pipes, cables and some small ducts where the tested detail allows. Larger openings and some plastic pipes call for collars, wraps, batts or boards instead. If the detail calls for something other than sealant, we say so rather than force sealant into it. We work on small duct penetrations where the tested detail allows, pipe penetrations and linear gaps at wall heads, and the failures we’re asked to look at most are openings found when ceilings come down for a refit and open linear gaps along the top of fire-resisting walls. For commercial sealant work in Hampstead, you deal with one contact from quote to sign-off, whether it’s one building or several.
Fit-outs and M&E works in London buildings often leave service penetrations open behind ceilings and in risers. If sealant is the specified product we fit it to its tested detail, and if the detail needs something else, you will hear it from us.
We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.
- Place
- Hampstead (NW3, NW6, NW11, N2)
- Region
- Greater London
- Cover
- 12 months on every job
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Looking after the joints
After handover, a little attention goes a long way:
- Look above ceilings when tiles are lifted for other jobs
- Get seals inspected before ceilings and boxing close
- Flag new cables with no seal around them
- Keep general-purpose fillers away from compartment walls
Allow the manufacturer’s stated cure time before boxing in or decorating. Some fire-rated sealants accept paint and some don’t.
Ask every contractor who works in risers or voids to report openings they create. Small habits like this stop openings building up.
Where services cross fire walls in Hampstead
Four care or nursing homes sit less than 2 miles from Hampstead. Where new services have gone through compartment walls in a care setting, the gaps need the specified product. Where that’s fire-rated sealant, we install it to the manufacturer’s tested detail. With tenants changing and fit-outs following, London buildings see service routes altered again and again. Penetrations are sealed with the specified product, to its tested detail, under the building’s own permit rules.
Tenant changes at centres like O2 Centre, less than half a mile to the south of Hampstead, often mean new services through walls between units. For a building at a site such as The Quadrant Business Centre, 1.5 miles south-west of Hampstead, a check of penetration seals after each fit-out is good practice.
Hampstead is about 3 miles north-west of City of Westminster, in Greater London. Our applicators travel to Hampstead for work on service penetrations. Across Greater London, 764 places are covered, including Hampstead.
We take on service penetrations across the NW3, NW6, NW11 and N2 postcode area, whatever the building. If your site is on Hampstead High Street, New End Square and The Mount Square or close by, send details and we’ll quote for service penetrations. Access to Hampstead is via the A1 and A502, so getting applicators and materials to site is simple. Nearby places we also cover include Greenhill (1 mile north-east), West Hampstead (1 mile west), Fortune Green (1 mile west), Vale of Health (1 mile north) and South Hampstead (1 mile south) for service penetrations. Further afield, our area takes in London (5 miles south-east), City of Westminster (3 miles south-east), Marylebone (3 miles south-east), Kensington (4 miles south), St Pancras (3 miles south-east) and Shoreditch (5 miles south-east). As one of the bigger centres in Greater London, Hampstead has a broad mix of commercial, public and industrial buildings.
What’s near Hampstead
Locally, jobs take us to sites close to South Hampstead High School, Kilburn Grange Park and St Anthony's Preparatory School. Other local landmarks include King William IV Public House (under half a mile north-east) and Cecil Sharp House (1.7 miles south-east). Hampstead has its own railway station: Finchley Road & Frognal station. Nearby you will also find Isokon Gallery (0.8 miles east) and New End Hospital (under half a mile north). Not far away are Belsize Wood and The Long Water.
What we are called out for in Hampstead
When a seal departs from its tested detail, the evidence no longer covers it. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are what we find most often.
Any of the following is a good reason to get the joints checked over:
- Open linear gaps along the top of fire-resisting walls
- Service penetrations left open after M&E works
- Openings found when ceilings come down for a refit
- Damaged fire seals in risers and voids
On a hospital site such as Royal Free Hospital, 0.6 miles east of Hampstead, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.
Questions to ask before you book
- Are they CHAS accredited or on Constructionline?
- Whether old or failed sealant will be cut out, not overlaid
- Their plan for phasing and protecting the area
- How joint depth will be controlled
How a job runs
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes anything from one day to a planned run of visits, depending on the number of seals and the access, and we clear our waste as we work. For a job in Hampstead, access comes first. Send the building rules and access times with your enquiry.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- We compare every service penetration with its tested detail before sealing.
- Foam, ordinary sealant and debris come out first.
- The specified backing and sealant go in to depth and are finished neatly.
- We tell you about openings that need a different product.
Before we start on site
- Send any specification or drawings in advance
- Make sure the joints can be reached
- Share the asbestos register for older buildings
Ask for a quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, phone 01277 525 020 or email the details over.
Advice
What sets the cost
Quotes vary with the job. It mainly depends on:
- The product specified
- Travel to remote or island sites
- The site’s rules and procedures
- Whether the work must be split into stages
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 you’ll have a fixed figure to work with.
What to include in your enquiry
It doesn’t need to be a full survey. These details are enough to start:
- Any specification or named product
- Whether the building will be occupied during the work
- Asbestos survey details if the building is older
- Drawings or a marked-up plan, if available
For a fixed quote, call 01277 525 020 or email a schedule or drawings with the site address and an outline of the work. Our quote form is another easy route.
Places near Hampstead
What else we do in Hampstead
What happens if it’s left?
It is cheaper to seal service penetrations as each services package finishes than to come back for them later. While the area is still open, every opening is easy to see and reach, and the right detail can be checked at the time. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.
A quote for service penetrations depends on how many there are, their condition and the access, plus any specification you’re working to. Ask us for a fixed quote.
Why appoint us
- Clear, fixed quotes
- One number for every site we cover
- Fully insured
- Health and safety: CHAS accredited
Hampstead: questions and answers
Can work at a site such as Regent's University London fit around teaching?
Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Will you work in a care home in Hampstead without moving residents out?
Yes. We agree rooms and times with the manager and work a few areas at a time. Tell us about any infection-control or safeguarding requirements and we will work to them.
Is Hampstead in your area?
Yes. We cover Hampstead. To discuss a job, call 01277 525 020 or email drawings and photos.
Do you have third-party installer accreditation for fire stopping?
No. We don’t hold a third-party fire-stopping installer certificate. Our credentials are CHAS accreditation, Constructionline membership and CSCS-carded applicators, and we are fully insured. Where a client or main contractor requires a scheme member, we’ll say so right away rather than waste your time.
Is colour matching possible?
In many cases, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We confirm what’s available for the specified product when we quote.
Is fire stopping in Scotland covered by different guidance?
Our work covers Greater London, the South East and every Scottish council area. In Scotland, clause 2.1.14 of the non-domestic Technical Handbook says service penetrations should keep at least the fire resistance of the wall or floor, with proprietary products tested for the end use.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
What we can’t put right
Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is one of these:
- Deciding what a wall or floor needs, which belongs to the designer
- Approving the work on behalf of building control
- Large openings beyond what any sealant detail covers
If you are not sure, just speak to us on 01277 525 020 or email drawings and photos and we’ll give you a straight answer.
Joints and surfaces we work on
- Cable penetrations
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Pipe penetrations
- Linear gaps at wall heads
- Small duct penetrations where the tested detail allows