Southampton · England
Northam Fire Rated Sealant
Professional fire rated sealant in and around Northam, with old sealant always removed completely and a 12-month guarantee.
- Joints picked up in a fire-stopping survey
- Open holes round services passing through fire walls
- Cracked or shrunken fire-rated sealant
What affects the cost of fire rated sealant
Your quote is based on your job. We look at:
- Any mould that needs treating
- Working hours on commercial sites
- The old material and how stubborn it is
- The size of the job
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- Where the property is
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
If you’re in Northam and need fire rated sealant, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Fire rated sealant in Northam
Bigger jobs can be worked through in stages, flat by flat or floor by floor. It gives you a list to keep with the building’s fire safety documents. We work on linear gaps, plasterboard & masonry and pipe & cable gaps, and people most often call us about new service routes left unsealed after building work and gaps where walls meet ceilings or slabs.
Commercial work around a smaller place like Northam usually means a pub, a shop, a school or small business units rather than office blocks. Each needs the same care with its sealant as any larger building.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or send us an email.
- Location
- Northam (SO14, SO19, SO18)
- Region
- Southampton
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
FAQs for Northam
Do you work in hotels near Northam?
Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.
Do you cover smaller places like Northam?
Yes. Northam is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can I choose the sealant colour?
Yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.
Do you provide details of the products used?
Yes. Locations and products are written up when we finish. Tell us if your assessor needs it in a particular format.
What’s the difference between intumescent and fire-rated sealant?
Fire-rated sealant covers any sealant tested for use in fire stopping. Intumescent types expand when heated, and they’re one of the options. We use whichever the specification and tested details call for.
Is there a guarantee?
Yes. All our work carries a one-year guarantee.
Do you do fire sealant around door frames?
Yes, where the gap suits a sealant detail. Our work is the gap around the frame, and we will mention anything we notice about the door.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
What sealant work cannot fix
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Big openings where sealant alone is not the tested solution
- Sign-off of the building, which sits with building control or your assessor
- Problems with the door itself rather than the gap around the frame
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Service penetrations
- Pipe & cable gaps
- Flats & HMOs
- Linear gaps
- Plasterboard & masonry
- Door frames
What happens on the day
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours for a handful of gaps, and longer for a whole building. In a smaller place like Northam, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- Dust and loose debris are cleaned from each gap.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Before we arrive
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
How to get a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll take it from there.
Read more
Surface by surface
Flats and HMOs
Working in occupied flats needs some planning. We agree access to each flat and the common parts before any work starts to keep disruption down.
Plasterboard walls
We check that the board around the gap is sound. Loose material is removed so the sealant has a firm edge.
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Look in service cupboards and ceiling voids from time to time
- File the fire-stopping record where your assessor can find it
- Don’t fill fire-stopping gaps with ordinary foam or silicone
- Plan fire stopping into any work that goes through walls or floors
Include fire stopping in your regular building checks. Look for cracks, gaps or sealant that has been cut or pulled out and get them seen to.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Closing it is usually a straightforward job.
Leave it or put it right?
Fire-rated sealants need more care than everyday sealant. How it’s installed changes how it performs, so we follow the maker’s details on every gap. Homes in smaller places like Northam can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why choose Mr Mastic in Northam
- Old sealant always removed completely
- ARBOMaster approved applicator
- Experience in homes, commercial sites and hotels
- Over 20 years’ experience
Take a look at what affects the cost or what customers say.
Commercial buildings in Northam
If you run a hotel, guest house or holiday let in a coastal place like Northam, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. Northam has hotels and guest accommodation in and around it. Hotel work can be planned room by room, with out-of-hours working where needed.
For buildings such as Church of St Augustine, service openings in its walls need the right fire-rated sealant, as in any building. For landlords with property near Bitterne station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. If you look after a building such as Bitterne Manor Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices.
Northam is about 1 mile south-east of Southampton, in Southampton. Whether you’re in the middle of Northam or further out, fire rated sealant is available for homes and businesses alike. Northam is one of 40 places in Southampton where we work for fire rated sealant.
Jobs for fire rated sealant in SO14, SO19 and SO18 works the same way as everywhere else we cover. We cover properties on Sea Road, Lumpy Lane and Cross Road. If you’re just outside Northam, we cover 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). Within a short drive, we also cover Regents Park (3 miles west), Maybush (3 miles north-west), Coxford (3 miles north-west), Lordswood (3 miles north-west), Eling (5 miles west) and Rownhams (4 miles north-west).
Landmarks near Northam
Locally, jobs take us to homes and businesses close to Inspire Enterprise Academy, East Park and The Engineers Arms and the streets around them. The closest station to Northam is Bitterne station, roughly 0.6 miles north. Other landmarks nearby include Bitterne Local History Society Heritage And Research Centre (0.8 miles east) and Marlands Shopping Centre (1.2 miles west). The countryside around Northam includes Netley Common.