Fire stopping in Baldock
Fire-rated and intumescent sealing of service penetrations and linear gaps in Baldock and across Hertfordshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Builders’ foam or ordinary silicone in compartment walls
- Openings left by services added after handover
- Open linear gaps along the top of fire-resisting walls
Fire stopping in Baldock
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Looking after the joints
Sealant joints are maintenance items, and how long they last depends on how they’re treated. Our advice:
- Treat an open penetration as a priority repair
- Put resealing into every M&E and fit-out package
- Check with the data sheet before painting over fire sealant
- Arrange inspection before areas are covered up
Don’t patch a fire-rated seal with anything outside its tested detail. Repairs need the same product and detail as the original unless the designer specifies otherwise.
On fit-outs, get the fire-stopping specification agreed before the services go in. The designer can then choose details that suit the services planned, and the work runs in step with the M&E.
About our fire stopping in Baldock
Every service that crosses a compartment wall or floor leaves an opening, and that opening needs sealing to hold back fire and smoke. Our part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. We work to the product’s tested detail for every seal. If you’re dealing with hidden openings found during inspections and improvised or mixed-product fire seals, we can help, whatever the surface. Looking for mastic applicators who cover Baldock? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.
Converted and extended buildings around places like Baldock can mix old and new construction, so it’s worth confirming the wall or floor type before choosing the seal. The right product depends on the wall or floor and the services passing through, and we’ll tell you if the detail calls for something other than sealant.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Where
- Baldock (SG7, SG6)
- Region
- Hertfordshire
- Guarantee
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Places near Baldock
Other services in Baldock
Diagnose, treat, sign off
A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work typically 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. Work in places the size of Baldock is planned as a single visit where we can. Clear photos and measurements help us bring the right products.
- First we confirm the product and tested details named in the specification.
- Openings are measured and grouped by detail.
- Old or wrong materials are cut out.
- Mineral wool or other backing is fitted where required.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- Completed areas are checked with you, with the records agreed when we quoted.
Getting the site ready
- Agree which areas must stay open
- Point out parking and an unloading spot
- Let us know about inductions and permits
Request 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.
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When it isn’t the sealant
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Signing off or certifying a building’s fire stopping
- Reviewing a building’s overall fire safety
- Construction that lacks the fire resistance the seal relies on
If you’re not sure, just ring 01277 525 020 or send details through our quote form and we will give you a straight answer before you book.
Joints and surfaces we work on
- Cable penetrations
- Service gaps in risers
- Pipe penetrations
- Small duct penetrations where the tested detail allows
- Linear gaps at wall heads
- Joints between fire-resisting walls and floors
Penetration seals near Baldock
At about 34 miles from central London, Baldock is within reach of the capital. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. Several hotels sit less than 2 miles from Baldock. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close.
Halls and meeting rooms at places like Church of St. Mary the Virgin sometimes gain new services, and any compartment wall crossed needs the specified seal. For a school such as Hartsfield Junior Mixed and Infant School, penetration sealing fits best at the end of the summer works. At a healthcare site like Fairfield Hospital, 2.8 miles to the west of Baldock, new services through compartment walls are a constant, and each needs the specified seal.
Baldock is about 2 miles north-east of Letchworth, in Hertfordshire. Across the SG7 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 371 places in Hertfordshire, from busy centres to rural villages. We also cover London, around 34 miles from Baldock.
Work on service penetrations is covered throughout SG7 and SG6, whatever the building. Streets here include High Street, Station Road and London Road. Main routes into Baldock include the A507 and B197. Just outside Baldock, we also work in Clothall (2 miles south-east), Weston (2 miles south), Wallington (3 miles east), Rooks Nest (4 miles south) and St Nicholas (5 miles south). Bigger towns within reach include Stevenage (6 miles south), Welwyn Garden City (13 miles south), Harpenden (14 miles south-west), Hitchin (5 miles south-west), Hertford (14 miles south) and Ware (14 miles south-east).
Around Baldock
Around Baldock, our work takes us to commercial buildings near Norton School, The Knights Templar School and The White Lion Public House. Baldock has its own railway station: Baldock station. A little further out are Fairfield Hospital (2.8 miles west) and First Garden City Heritage Museum (1.8 miles south-west). Not far away are Purwell Ninesprings.
Different surfaces, different methods
Metal pipes
Copper and steel pipes are a common service penetration for fire-rated sealant. Pipe diameter, annular gap, sealant depth and any pipe insulation all have to match the detail and we confirm each before sealing.
Masonry and concrete
Openings through concrete vary from tidy cores to rough break-outs. Each gap is measured where it is widest so we know it sits within the tested range.
Baldock: questions and answers
Do you cover business parks and estates near Baldock, such as Letchworth Gateway Retail Park?
Yes. Our area takes in Baldock and its surroundings, with estates and business parks such as Letchworth Gateway Retail Park included. Send details of the unit and the work through our quote form for a quick quote.
How does the move away from BS 476 affect penetration seals in Baldock?
References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.
What happens if old sealant might contain asbestos?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. 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. Removing asbestos is a job for asbestos specialists, not us.
Who decides which product is used?
If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
Do you guarantee your work?
Yes, for 12 months. If our installation fails in that time, we return and fix it.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.
Is Baldock in your area?
Yes. We cover Baldock and the rest of Hertfordshire, within our coverage of Greater London, South East England and Scotland. For a quote, call 01277 525 020 or email the details over.
Commercial clients in Baldock
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Baldock can sit alongside others in a wider programme across Hertfordshire.
Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
How the quote is worked out
There’s no standard rate for sealant work, because every site is different. What we look at:
- Joint width, depth and condition
- Whether old sealant has to be cut out first
- Distance, for remote addresses
- Quantities, in metres or numbers
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote and we will explain how it’s made up.
What we need to price the job
It doesn’t need to be a full survey. A few details are enough to get going:
- The asbestos register, for older buildings
- How the joints are reached, and at what height
- Where the site is, with the postcode
- Your programme or deadline
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.