Fire stopping in St Albans
Fire-rated and intumescent sealing of service penetrations and linear gaps in St Albans and across Hertfordshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Unsealed openings around new pipes and cables
- Expanding foam used as fire stopping
- Damaged fire seals in risers and voids
Need fire stopping in St Albans?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Different surfaces, different methods
Metal pipes
Metal pipes conduct heat, so their details often call for extra measures along the pipe. We follow whatever the detail requires and flag anything we can’t match.
Linear joints
Joints at the top of partitions may need to move as the slab above deflects. The specified product and backing for that movement are what goes in.
Fire stopping in St Albans
Every service that crosses a compartment wall or floor leaves an opening, and that opening needs sealing to hold back fire and smoke. Our job is fitting fire-rated and intumescent sealant at those service penetrations, and along linear gaps, where it is the specified product. Each seal follows the manufacturer’s tested detail. The enquiries we see most involve unsealed openings around new pipes and cables and fire-stopping items raised at inspection or handover, across joints between fire-resisting walls and floors, small duct penetrations where the tested detail allows and service gaps in risers. For commercial sealant work in St Albans, you deal with one contact from quote to sign-off, whether it’s one building or several.
Refits on business parks and in shopping centres around large towns like St Albans bring new cables and pipework through compartment walls. Each new penetration needs closing with the product the specification calls for, and fire-rated sealant goes in to the product’s tested detail where that is what’s specified.
We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Location
- St Albans (AL1, AL3, AL4)
- Wider area
- Hertfordshire
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Work for main contractors and building owners
As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
Maintenance after handover
Regular inspection catches problems early. In particular:
- Keep general-purpose fillers away from compartment walls
- Report damaged or disturbed seals as soon as they’re spotted
- Settle who seals which penetrations at the start of a project
- Keep product data and details in the fire safety file
Give the sealant its full cure time before ceilings, boxing or decoration go over it. Some fire-rated sealants accept paint and some don’t, so check the product data first.
Looking at service areas on a regular cycle pays off. Catching a damaged seal early keeps the fix small.
Also near St Albans
More services for St Albans
How a job runs
Site rules come first: signing in, inductions and any permit to work. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. Sites in a big town such as St Albans frequently have reception sign-in, inductions and permits to work. Send the site rules with your enquiry and we’ll plan to them.
- First we confirm the product and tested details named in the specification.
- Openings are measured and grouped by detail.
- Improvised fillers and failed sealant are removed.
- Mineral wool or other backing is fitted where required.
- We gun the sealant in to the specified depth around each service and tool it.
- Completed areas are checked with you, with the records agreed when we quoted.
Getting the site ready
- Clear stock, furniture or equipment away from the joints
- For older buildings, check the asbestos register before work
- Tell us your opening times and when work is allowed
Get a fixed quote
For a fixed quote, phone 01277 525 020 or send details through our quote form. Our quote form is another easy route.
Read more
Penetration seals near St Albans
There are two care or nursing homes within about 2 miles of St Albans. Care homes rely on fire-resisting walls and floors, and maintenance work that breaks through them leaves openings to seal. Central London is about 20 miles from St Albans. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls.
Shop fits in centres such as Village Arcade St Albans (0.5 miles west of St Albans) can bring new services through fire-resisting walls between units, which then need the specified seal. At a college such as Oaklands College (1.8 miles east of St Albans), checking penetration seals after summer M&E works is good practice.
St Albans is about 20 miles north-west of London, in Hertfordshire. Businesses, contractors and managing agents in St Albans use us for work on service penetrations, as part of our coverage of Hertfordshire. Across Hertfordshire, 371 places are covered, St Albans among them. There’s a separate page for London, about 20 miles away.
Anyone looking for fire stopping in AL1, AL3 and AL4 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on Gabriel Square, Jubilee Square and Old London Road are within our area. With the A414 and B651 nearby, St Albans is straightforward for us to reach. Nearby places we also cover include Bernards Heath (1 mile north), Sopwell (1 mile south), St Stephens (1 mile south-west), Marshalswick (1 mile north-east) and Park Street (2 miles south) for service penetrations. A short drive away, we cover Watford (7 miles south-west), Hemel Hempstead (6 miles west), Stevenage (13 miles north-east), Welwyn Garden City (7 miles north-east), Harpenden (5 miles north) and Hitchin (14 miles north). St Albans ranks among the main centres of Hertfordshire, with offices, shops, schools and other public and commercial buildings.
Near you in St Albans
Around St Albans, our work takes us to commercial buildings near Alban City School, The Horn pub and Verulam School and the streets around them. St Albans has its own railway station: St Albans station. A little further out are St Albans Musical Museum (0.5 miles north-east) and The Maltings (less than half a mile west). Green spaces nearby include The Wick Local Nature Reserve and Verulamium Lake.
When to call us in St Albans
Most open service penetrations are left by later work. A new cable pulled by an electrician, a pipe rerouted by a plumber or a data run drilled through a riser can leave the hole behind. Across several fit-outs, the openings add up.
It’s worth sending us details if you spot any of the following:
- Openings found when ceilings come down for a refit
- Expanding foam used as fire stopping
- Fire seals cut back for extra cables and never reinstated
- Improvised or mixed-product fire seals
At a healthcare site like St Albans City Hospital, 0.9 miles to the north-west of St Albans, new services through compartment walls are a constant, and each needs the specified seal.
Comparing quotes
- Which product they’ll use, and why it suits the joint
- Who will actually carry out the work
- Do they follow the manufacturer’s priming guidance?
- What site paperwork they can supply
Leave it or put it right?
Leave a penetration open and smoke and fire can cross into the next compartment far earlier than intended. Putting it right is usually a modest job when the openings are accessible. Left until ceilings are closed or a tenant moves in, the same work costs more access and more disruption. On a busy site in a large place like St Albans, a failed joint gets worse with every day of use. Acting early keeps it a sealant job.
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.
Why us?
- Fixed quotes based on photos, drawings or a visit
- 12-month guarantee on workmanship
- Health and safety: CHAS accredited
- Old sealant cut out, never sealed over
See how commercial sealant jobs are priced or our accreditations and insurance.
Questions we’re asked in St Albans
Do you take on work at healthcare sites like St Albans City Hospital?
Yes, provided the work is planned with the site’s estates team. Each area is agreed with the ward or department and the estates team in advance.
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in St Albans?
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.
Which sealant will you use?
Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
Can weather delay the job?
For external joints, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.
Do your applicators hold CSCS cards?
Yes. Our applicators hold CSCS cards, which many sites require.
How soon can the area be used again?
The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.
Do you cover St Albans?
Yes. We cover St Albans, within our coverage of Greater London, South East England and Scotland. For a quote, call the office on 01277 525 020 or send details through our quote form.