Fire stopping in Northington
Fire stopping in Northington, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Seals that don’t match their tested detail
- Seals disturbed by maintenance and left open
- Fire-rated sealant that has cracked or shrunk back
Fire stopping across Northington
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Your questions answered
Is Northington too far out for you?
Not at all. Northington is within our area. London and every South East county are within our area. Good photos up front let us bring everything on the first visit.
Do you decide the fire-stopping details for buildings in Northington?
No, that sits with the designer, fire engineer or building control. We install fire-rated and intumescent sealant around service penetrations and linear gaps where it is specified, to the manufacturer’s tested detail.
How many days will you need on site?
We plan the time on site around your programme and access. We’ll give you an estimate of time on site when we quote.
Is the work guaranteed?
Yes, for 12 months. If our installation fails in that time, we return and fix it.
Do you seal on top of existing sealant?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.
How do I request a quote?
You can use the quote form on this site; alternatively, call 01277 525 020 or send details through our quote form. Photos, drawings or a joint schedule help us quote quickly.
How long do sealant joints last?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.
How we handle fire stopping in Northington
The test standards are BS EN 1366-3 for penetration seals and BS EN 1366-4 for linear joints 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. The enquiries we see most involve head-of-wall gaps with no fire seal and seals disturbed by maintenance and left open, on service gaps in risers, joints between fire-resisting walls and floors and pipe penetrations. Whoever orders the work in Northington, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Smaller places such as Northington still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Where
- Northington (SO24)
- Wider area
- Hampshire
- Guarantee
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
For managing agents and facilities managers
As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. 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. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.
Compartments and services around Northington
Fire stopping of openings and penetrations in England falls under Approved Document B. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. Either way, we install the specified product to its tested detail. Northington is about 54 miles from central London. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls; the gaps need the specified seal.
In a building such as Church of St John the Evangelist, any service penetration through a fire-resisting wall should be sealed to the specified detail.
Northington is about 7 miles north-east of Hyde, in Hampshire. Our applicators travel to Northington for work on service penetrations. We work across 723 places in Hampshire. We also cover Southampton, around 17 miles from Northington.
Commercial sites across SO24 are covered. If your building is just outside Northington, we cover Totford (1 mile north-east), Brown Candover (1 mile north-east), Old Alresford (2 miles south-east), Bighton (3 miles south-east) and Preston Candover (4 miles north-east). Further afield, our area takes in Basingstoke (10 miles north), Winchester (8 miles south-west), Eastleigh (13 miles south-west), Andover (14 miles north-west), Chandler's Ford (13 miles south-west) and Alton (9 miles east).
What’s near Northington
We work on buildings around The Woolpack Inn. Northington’s nearest station is Micheldever station, roughly 4.6 miles north-west. A little further out are Barton Castle (3.2 miles east).
Different surfaces, different methods
Linear joints
Head-of-wall joints often have to absorb slab deflection. We use the product and backing the detail names for that movement.
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.
Our process
On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, with the work itself normally taking longer where risers, ceiling voids or occupied floors have to be worked through in sequence. Smaller jobs around Northington can be grouped with others nearby. You will have a fixed quote before work starts.
- We ask for the product and detail your designer has specified.
- 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.
- Completed areas are checked with you, with the records agreed when we quoted.
Getting the site ready
- Point out any areas we must not close
- Share your working hours and any access restrictions
- Explain the parking and delivery arrangements
Ask for a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to phone 01277 525 020 or email the details over with what you know.
Advice
Signs you need fire stopping in Northington
On a busy project, programme pressure can mean fire stopping is rushed or left to whichever trade is closest. That is how unsuitable products and improvised details end up in compartment walls and later need putting right.
Typical triggers for a call:
- Old intumescent sealant that has split away
- Damaged fire seals in risers and voids
- Snag lists that include open service penetrations
- Improvised or mixed-product fire seals
Around Northington, we install fire-rated and intumescent sealant to the product’s tested detail wherever it is the specified product.
Questions to ask before you book
- Their pre-qualification and accreditations
- Proof of insurance
- Will failed sealant be removed rather than covered?
- Do they follow the manufacturer’s priming guidance?
Looking after the joints
A few simple habits keep the new joints working:
- Record which product was used where
- Flag new cables with no seal around them
- Ask which product is in place before decorating
- Foam or ordinary sealant is never a fire-seal repair
Once the seals are in, tell other trades they exist and must not be disturbed. Any seal cut back for a new service needs reinstating to its tested detail.
Specify fire stopping early on refits, not as an afterthought. Details can then be picked to suit the actual pipes, cables and ducts.
Why act early in Northington
Inspections and handover checks often pick up fire stopping. Late discoveries can delay handover while openings are reopened and resealed, so earlier action pays back. Older rural buildings around Northington move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
Why choose Mastic Doctor in Northington
- Work carried out by CSCS-carded applicators
- One number for every site we cover
- A Constructionline member, so easy to vet
- Old sealant cut out, never sealed over
See our cost guide and our accreditations.