Fire Stopping in Hay Street
Fire stopping in Hay Street, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Fire-stopping items raised at inspection or handover
- Fire seals cut back for extra cables and never reinstated
- Openings found when ceilings come down for a refit
Need fire stopping in Hay Street?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Fire stopping in Hay Street: the local picture
At about 29 miles from central London, Hay Street is within reach of the capital. Office refits around the commuter belt bring new cabling through fire-resisting walls; the gaps need the specified seal. Fire stopping of openings and penetrations in England falls under Approved Document B. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. Either way, we install the specified product to its tested detail.
Industrial units on estates such as Watermill Industrial Estate (to the north-west of Hay Street) often separate offices from warehouse space with fire-resisting walls, and new services through them need the specified seal. In a school such as Jenyns First School and Nursery, fire-rated sealant goes in around service penetrations where it is specified. In a building such as Parish Church of St Mary the Virgin, any service penetration through a fire-resisting wall should be sealed to the specified detail.
Hay Street is about 7 miles north-west of Bishop's Stortford, in Hertfordshire. Any commercial site in Hay Street is covered, whether it’s a single job or part of a planned programme. Our Hertfordshire coverage takes in 371 places. Sites around London have their own page, roughly 29 miles from Hay Street.
If you need fire stopping in SG11, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Close to Hay Street, our area also takes in Braughing (1 mile south-east), Westmill (2 miles west), Aspenden (2 miles north-west), Great Hormead (2 miles north) and Buntingford (3 miles north-west). Further afield, our area takes in Stevenage (9 miles west), Bishop's Stortford (7 miles south-east), Welwyn Garden City (12 miles south-west), Hitchin (13 miles west), Hoddesdon (11 miles south) and Cheshunt (15 miles south).
Local landmarks in Hay Street
Locally, jobs take us to sites close to Adam And Eve Public House. Other landmarks nearby include Brent Pelham (3.7 miles north-east).
How we handle fire stopping in Hay Street
Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4 and the results are classified to BS EN 13501-2. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. So our job is to reproduce that arrangement faithfully. Most enquiries involve hidden openings found during inspections and head-of-wall gaps with no fire seal, across service gaps in risers, small duct penetrations where the tested detail allows and pipe penetrations. Searching for sealant specialists in Hay Street? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.
Rural conversions around Hay Street can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Place
- Hay Street (SG11)
- Wider area
- Hertfordshire
- Cover
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Towns and villages near Hay Street
More services for Hay Street
Site staff or a sealant specialist?
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
Questions we’re asked in Hay Street
Do you cover business parks and estates near Hay Street, such as Watermill Industrial Estate?
Yes. Estates, retail parks and business parks around Hay Street, Watermill Industrial Estate among them, are all within reach. A few photos and the unit address let us price the work.
What happens to BS 476 references for fire stopping in Hay Street?
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.
How many days will you need on site?
It depends on the scope, but the work normally takes anything from one day to a planned run of visits, depending on the number of seals and the access. For bigger or phased jobs, we will set out a timescale with the quote.
Does the weather affect the work?
It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
What do you charge?
We don’t publish prices, because every site is different. With photos or drawings, we can give you a fixed quote.
Can you follow the specification on our project?
Yes. Send it with your enquiry, and we will price the work to it.
Is your workmanship covered by a guarantee?
Yes. The 12-month guarantee covers our preparation and application, but not damage, misuse or other trades’ work.
Our process
Working in a building that stays open takes some planning. We sign and contain the area we’re in, keep walkways clear and move on in phases so staff and visitors can carry on around us. Rural sites near Hay Street may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.
- 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.
Preparing the site
- Tell us which areas need to stay in use
- Share your working hours and any access restrictions
- Confirm the product named in the specification
Quotes
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we will fill any gaps with a visit.
Related advice
What the job involves on each surface
Cables and cable bundles
Cable penetrations are frequently sealed with fire-rated sealant where the detail allows. The detail limits bundle size and the gaps between and around cables, so we check before sealing.
Small ducts
Small ductwork can sometimes be sealed with sealant where the tested detail includes it. Larger or fire-rated ductwork usually needs a different solution set by the designer.
Keeping the joints sound
Problems stay small when the joints are checked regularly. Specifically:
- Foam or ordinary sealant is never a fire-seal repair
- Have penetrations checked while they can still be seen
- Put resealing into every M&E and fit-out package
- Leave fire sealant to cure fully before covering it
During planned inspections, look at seals in risers, cupboards and voids. Look for cracks, unsealed new cables and gaps that have been enlarged.
Regular walk-rounds of service areas are worth the time. A cracked or disturbed seal found early is a small job.
When something else is needed
A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is one of these:
- Openings that need collars, wraps, batts or boards rather than sealant
- Approving the work on behalf of building control
- Gaps in walls that were never built as compartment walls
If you’re not sure, just speak to us on 01277 525 020 or email us and we will give you a straight answer before you book.
Surfaces we seal
- Joints between fire-resisting walls and floors
- Linear gaps at wall heads
- Cable penetrations
- Pipe penetrations
- Small duct penetrations where the tested detail allows
- Service gaps in risers
What sets the cost
What shapes the price:
- Induction, permit and paperwork requirements
- How much existing material needs removing
- Which sealant the job calls for
- The total length or number of joints
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
What to include in your enquiry
Whether it’s one area or a whole building, these details speed things up:
- Access details, including height
- Drawings or a marked-up plan, if available
- Any dates the work must fit around
- The asbestos register, for older buildings
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, call 01277 525 020 or send details through our quote form.