Fire Stopping in Belsize Park
Commercial sealant work in Belsize Park for contractors, FMs and building owners: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.
- Service penetrations left open after M&E works
- Fire-rated sealant that has cracked or shrunk back
- Unsealed joints where partitions meet the slab
Fire stopping for Belsize Park sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Why act early in Belsize Park
An unsealed opening affects more than fire safety: smoke, noise and draughts pass through them every day. Sealing them to the specified detail deals with the fire risk first, and the other benefits follow. In Belsize Park, each extra visit means more notices, permits and disruption, so cutting the old sealant out fully and doing it right once is the better route.
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we’ll explain how it’s made up.
Why appoint us
- CHAS accredited contractor
- Products installed to the manufacturer’s instructions
- Workmanship guaranteed for 12 months
- One phone line for London, the South East and Scotland
See how commercial sealant jobs are priced or our accreditations and insurance.
Fire stopping for commercial buildings in Belsize Park
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. What we bring is careful installation of the specified sealant, to the maker’s guidance. We work on joints between fire-resisting walls and floors, pipe penetrations and small duct penetrations where the tested detail allows, and the usual reasons a site gets in touch are non-fire-rated filler around services and unsealed openings around new pipes and cables. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Belsize Park, that means joint design, primers and backing rod as standard.
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.
Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Location
- Belsize Park (NW3, NW5, NW1)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
When it isn’t the sealant
We check first that sealant really is the fix. It won’t put right:
- Issuing fire ratings or certificates for seals
- Plastic pipes whose detail calls for a collar or wrap
- Reviewing a building’s overall fire safety
If in doubt, give us a call on 01277 525 020 or send details through our quote form and we’ll say what we think.
Joints and surfaces we work on
- Cable penetrations
- Small duct penetrations where the tested detail allows
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Linear gaps at wall heads
- Pipe penetrations
Diagnose, treat, sign off
Site rules come first: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. Planning a London job such as one in Belsize Park starts with access. Send the building rules and access times with your enquiry.
- First we confirm the product and tested details named in the specification.
- We sort the openings by the detail each one needs.
- Improvised fillers and failed sealant are removed.
- Mineral wool or other backing is fitted where required.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- We walk the completed areas with you and confirm the records agreed at quote stage.
Preparing the site
- Flag any permit to work we’ll need
- Make sure the joints can be reached
- Send your site hours and access windows
Get a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Advice
Maintenance after handover
Once the work is signed off, a little attention goes a long way:
- Make fire stopping part of every scope that crosses a fire-resisting wall
- Keep product data and details in the fire safety file
- Ask the designer to confirm details early on refits
- Have penetrations checked while they can still be seen
Keep the product data and installation details with the building’s fire safety information. Anyone resealing later needs to know which product and detail were used.
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.
Belsize Park: questions and answers
Is hospital work, at somewhere like Royal Free Hospital, something you do?
Yes, hospitals are one of the sectors we cover. We follow the site’s permits, sign-in and infection-control procedures in every area.
Can you cope with the access rules in a London building?
Yes, most London buildings have access rules of some kind, and we plan around them. Send the building rules and access times with your enquiry.
Is your workmanship covered by a guarantee?
Yes. Our workmanship is backed for 12 months.
Will fire-rated sealant work on every penetration?
No. Sealant is the right product only where the tested detail says so. Collars, wraps, batts and boards exist for openings sealant doesn’t cover, and we flag those rather than improvise.
When can the area be used after sealing?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
Can you tell us what fire stopping our building needs?
No. Deciding what is needed sits with the designer, fire engineer and building control. Our role is installing what they specify, to the product’s tested detail.
How do you deal with asbestos in old sealant?
Managing asbestos is the dutyholder’s responsibility, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.
When to bring in a specialist
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
Redoing a failed joint typically costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
Fire stopping in Belsize Park: the local picture
Three care or nursing homes sit less than 2 miles from Belsize Park. Care settings depend on compartmentation, so service penetrations made during maintenance or refurbishment need sealing with the specified product. For England, the fire stopping of penetrations is dealt with in Approved Document B. 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. We install whatever has been specified, to the product’s tested detail.
On a hospital site such as Royal Free Hospital, 0.6 miles to the north of Belsize Park, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits. For a unit at a centre such as O2 Centre, 0.8 miles to the west of Belsize Park, penetration seals are worth checking after each shop fit.
Belsize Park is about 1 mile south-east of Hampstead, in Greater London. Businesses, contractors and managing agents in Belsize Park use us for work on service penetrations. We work across 764 places in Greater London, large and small.
We take on service penetrations across the NW3, NW5 and NW1 postcode area. Among the streets we cover are Eton Road, Lawn Road and Ornan Road. Nearby places we also cover include Haverstock (1 mile north), Primrose Hill (1 mile south), South Hampstead (1 mile west), Swiss Cottage (1 mile west) and Chalk Farm (1 mile east) for service penetrations. Bigger towns within reach include London (4 miles south-east), Kensington (4 miles south-west), Shoreditch (4 miles east), Walthamstow (7 miles north-east), Hoxton (3 miles east) and Whitechapel (4 miles south-east).
Near you in Belsize Park
Recent enquiries here include premises near The Washington pub, Primrose Hill and St. Mary's Town and Country School. Also close by are Cecil Sharp House (0.8 miles south-east) and St Paul's Church of England Primary School (less than half a mile south). For rail, the closest station is South Hampstead station, about 0.7 miles west. Well-known places in the area include Wellington Hospital (0.9 miles south-west) and O2 Centre (0.8 miles west). Open spaces near Belsize Park include Adelaide Nature Reserve and The Long Water.
Towns and villages near Belsize Park
What else we do in Belsize Park
Signs you need fire stopping in Belsize Park
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. Linear joint details set a width range and movement capability, and the seal has to sit within them.
Site and facilities staff are often the first to spot these:
- Unsealed penetrations discovered above suspended ceilings
- Service penetrations left open after M&E works
- Open linear gaps along the top of fire-resisting walls
- Old intumescent sealant that has split away
For a building at a site such as Regis Road Business Park, 0.9 miles north-east of Belsize Park, a check of penetration seals after each fit-out is good practice.
Questions to ask before you book
- What site paperwork they can supply
- Whether their applicators hold CSCS cards
- Whether old or failed sealant will be cut out, not overlaid
- The named product and why it was chosen