Fire-rated sealing and fire stopping in Northam, Southampton
Fire-rated and intumescent sealing of service penetrations and linear gaps across Northam, by CSCS-carded applicators. Fully insured and CHAS accredited.
- Hidden openings found during inspections
- Fire sealant pulled out of the opening
- Unsealed joints where partitions meet the slab
Fire stopping across Northam
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
After the work
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Include service cupboards in routine inspections
- Settle who seals which penetrations at the start of a project
- Keep product data and details in the fire safety file
- Treat an open penetration as a priority repair
After the work, brief anyone else working in the area that the openings are now sealed. Any seal cut back for a new service needs reinstating to its tested detail.
Ask every contractor who works in risers or voids to report openings they create. It costs little and catches breaches early.
Fire stopping for commercial buildings in Northam
On a fit-out or refurbishment, we follow the services contractors floor by floor. We work from your penetration schedule or marked-up drawings alongside the manufacturer’s details. Tell us what records you need and we will confirm with the quote. We work on joints between fire-resisting walls and floors, pipe penetrations and linear gaps at wall heads, and the usual reasons a site gets in touch are seals disturbed by maintenance and left open and old intumescent sealant that has split away. Looking for mastic applicators who cover Northam? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
Converted and extended buildings around places like Northam can mix old and new construction, so it’s worth confirming the wall or floor type before choosing the seal. We match the product to the substrate and service, and say so if a collar, wrap or batt is the specified item.
Work we carry out in Southampton comes with a 12-month guarantee. Should something we installed fail, give us a call on 01277 525 020 or email a schedule or drawings and we will come back to it.
- Place
- Northam (SO14, SO19, SO18)
- Region
- Southampton
- Cover
- 12 months on our workmanship
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Nearby places to Northam
Other services in Northam
Diagnose, treat, sign off
Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. For a site in Northam, we plan so the whole job is done in one go where possible. Photos with rough sizes let us arrive with everything needed.
- 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.
- Where the detail needs backing, it goes in at the stated depth.
- 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.
Getting the site ready
- Tell us your opening times and when work is allowed
- Flag any permit to work we’ll need
- Move anything stored against the joints
Getting a fixed quote
For a fixed quote, ring 01277 525 020 or email a schedule or drawings. Our quote form is another easy route.
Advice
Questions we are asked in Northam
Do you work in occupied care homes around Northam?
Yes. Care settings are planned area by area, at times agreed with the home. Tell us about any infection-control or safeguarding requirements and we will work to them.
What does the BS 476 change mean for fire-rated sealant in Northam?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.
Can weather delay the job?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
How long does a typical visit take?
We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.
Can you quote from photographs?
It depends on the job. Straightforward work can often be priced from photos and measurements, while larger or less clear jobs get a site visit first.
Is the work guaranteed?
Yes, for 12 months. If our installation fails in that time, we return and fix it.
When it isn’t the sealant
A few problems need another trade or a different fix, and we point that out rather than sealing over them:
- Gaps in walls that were never built as compartment walls
- Writing the fire-stopping specification
- Issuing fire ratings or certificates for seals
Not sure which it is? You can call 01277 525 020 or email the details over and we’ll tell you honestly before you book.
What we seal
- Pipe penetrations
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Cable penetrations
- Service gaps in risers
- Linear gaps at wall heads
Service penetrations in Northam buildings
There are a good number of hotels within about 2 miles of Northam. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail. In England, Approved Document B covers fire stopping of openings and penetrations. 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. We install whatever has been specified, to the product’s tested detail.
Workshops and IT rooms at colleges like Southampton City College Marine Skills Centre, 0.7 miles to the south of Northam, are re-serviced often, leaving penetrations to seal. Office fit-outs on sites such as Bitterne Business Centre (0.5 miles north of Northam) add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it.
Northam is about 1 mile south-east of Southampton, in Southampton. Commercial clients in Northam can call on us for service penetrations, as part of our coverage of Southampton. Northam is one of 30 places in Southampton on our list for service penetrations.
Work on service penetrations is covered throughout SO14, SO19 and SO18, whatever the building. We cover commercial and managed buildings on Sea Road, Lumpy Lane and Cross Road. Nearby places we also cover include Peartree Green (1 mile south), Bitterne Manor (1 mile north), Itchen (1 mile south-east), St Mary's (1 mile south-west) and Bitterne (1 mile east) for service penetrations. Nearby towns on our patch include Regents Park (3 miles west), Maybush (3 miles north-west), Coxford (3 miles north-west), Lordswood (3 miles north-west), Millbrook (3 miles west) and Redbridge (4 miles west).
What’s near Northam
In Northam, that means premises near Inspire Enterprise Academy, East Park and The Engineers Arms. For rail, the closest station is Bitterne station, roughly 0.6 miles north of the centre. Other landmarks nearby include Bitterne Local History Society Heritage And Research Centre (0.8 miles east) and Marlands Shopping Centre (1.2 miles west). For a walk, there’s Netley Common.
When to bring in a specialist
Certain joints really need a specialist: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
What we’re called out for in Northam
Some service penetrations were never sealed at all. Inspections, refurbishments and ceiling access normally bring them to light.
Site and facilities staff are often the first to spot these:
- Non-fire-rated filler around services
- Fire stopping installed outside its tested range
- Unsealed penetrations discovered above suspended ceilings
- Service penetrations left open after M&E works
At a university such as Solent University, 0.9 miles west of Northam, labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work.
Comparing quotes
- Which product they’ll use, and why it suits the joint
- How long is the guarantee, and what does it include?
- Their public liability cover
- How the existing material will be dealt with
How the job changes by surface
Risers and ceiling voids
Voids hide a lot of unsealed openings. We work through the areas on your schedule methodically, and note anything we find that isn’t on it.
Small ducts
Ducts are only sealed with sealant where the detail allows it. Dampers and ductwork systems themselves are outside our work.