Marchwood fire stopping
Commercial sealant work in Marchwood for contractors, FMs and building owners: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.
- Damaged fire seals in risers and voids
- Head-of-wall gaps with no fire seal
- Fire-rated sealant that has cracked or shrunk back
Fire stopping near Marchwood
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Marchwood: questions and answers
Can you work at a site such as Marchwood Industrial Park, by Marchwood?
Yes. Estates, retail parks and business parks around Marchwood, Marchwood Industrial Park among them, are all within reach. Photos and a short description are enough for a first look.
What does the BS 476 change mean for fire-rated sealant in Marchwood?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Does the weather affect the work?
Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Is your workmanship covered by a guarantee?
Yes. Our workmanship is backed for 12 months on every job.
Do your applicators hold CSCS cards?
Yes. Our applicators hold CSCS cards, which many sites require.
Can the building stay open while you work?
Yes, with some planning. We agree a sequence with your contact so just one area at a time is disrupted.
Is Marchwood in your area?
Yes. Marchwood falls within our area, and you can give us a call on 01277 525 020 or send photos by email to get started.
Fire stopping in Marchwood, done properly
A fire-rated sealant is only one part of a tested system: the evidence covers a specific product, wall or floor type, service, gap, depth and backing. We match each opening to that detail before any sealant goes in, and raise it with you if it falls outside. Most enquiries involve head-of-wall gaps with no fire seal and old intumescent sealant that has split away, on small duct penetrations where the tested detail allows, linear gaps at wall heads and pipe penetrations. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Marchwood it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Buildings in a smaller place such as Marchwood that need fire-rated sealing are typically schools, care homes, surgeries, small offices and flats over shops. Specified fire-rated sealant goes around new services there, built to match the manufacturer’s detail.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.
- Where
- Marchwood (SO40)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Also near Marchwood
Also in Marchwood
Surface by surface
Risers and ceiling voids
Risers and ceiling voids hold most of a building’s service penetrations. Access to these areas is planned with you in advance.
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.
Diagnose, treat, sign off
On arrival, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before any cutting starts, with the work itself normally taking longer where risers, ceiling voids or occupied floors have to be worked through in sequence. For a site in Marchwood, 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.
- Old or wrong materials are cut out.
- Mineral wool or other backing is fitted where required.
- We gun the sealant in to the specified depth around each service and tool it.
- We walk the completed areas with you and confirm the records agreed at quote stage.
What we need from you
- Arrange parking or a loading space
- Tell staff and tenants when we’ll be in
- Move anything stored against the joints
Ask for a quote
To get a fixed quote, ring 01277 525 020 or send photos by email. You can also send details through our quote form.
Read more
After the work
Cleaning and maintenance staff play a part too. Share these points with them:
- Check risers and ceiling voids after each round of works
- Keep general-purpose fillers away from compartment walls
- Treat an open penetration as a priority repair
- Record which product was used where
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, by someone who knows the system.
A simple record of seal locations and products helps. It tells the next contractor exactly what to reinstate.
Signs you need fire stopping in Marchwood
A common fault is a product that was never fire-rated in the first place: builders’ foam or ordinary silicone used to fill a hole. The opening looks sealed but has no fire test evidence behind it, so it has to come out.
Look out for the following:
- Fire sealant pulled out of the opening
- Builders’ foam or ordinary silicone in compartment walls
- Unsealed penetrations discovered above suspended ceilings
- Fire stopping installed outside its tested range
In a retail centre such as Mountbatten Retail Park, 1.9 miles north-east of Marchwood, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail.
Questions to ask before you book
- What level of public liability insurance do they hold?
- Will failed sealant be removed rather than covered?
- Their plan for phasing and protecting the area
- Will CSCS-carded applicators be on site?
Quoting for work in Marchwood
These are the things that shape the price:
- Distance, for remote addresses
- Phasing around occupants
- How much there is to seal
- Which sealant the job calls for
The price depends on the quantity of joints, how much old material needs removing and the access. Call for a quote once you have the details.
Details that help us quote
For an accurate fixed quote, we need a clear picture of the site. Send us:
- Clear photos of the problem areas
- The product your specification calls for
- The type of building and who uses it
- Asbestos survey details if the building is older
Send us photos, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.
Fire-rated sealing for Marchwood buildings
Approved Document B is the English guidance that covers fire stopping around openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail. A number of hotels sit less than 2 miles from Marchwood. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close.
For a site team at a college like Southampton City College, 2.6 miles to the east of Marchwood, fire-rated sealing is best scheduled after the summer works. Residences at universities like Southampton Solent University, 2.5 miles north-east of Marchwood, have compartment walls that must be resealed whenever services change.
Marchwood is about 3 miles south-east of Totton, in Hampshire. Across the SO40 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 723 places in Hampshire, from busy centres to rural villages.
We take on service penetrations across the SO40 postcode area. Buildings on Cranberry Close, Melick Close and The Rowans are within our area for service penetrations. Being close to the A326, Marchwood is straightforward for us to reach. We also cover Dibden (2 miles south-east), Dibden Purlieu (3 miles south-east), Hythe (3 miles south-east), Beaulieu (5 miles south) and Furzey Lodge (5 miles south) for service penetrations. Further afield, our area takes in Winchester (13 miles north-east), Gosport (14 miles south-east), Eastleigh (7 miles north-east), Fareham (11 miles east), Totton (3 miles north-west) and Chandler's Ford (7 miles north-east).
Landmarks near Marchwood
Recent enquiries here include premises near White Horse pub and Hounsdown School and the streets around them. The closest station to Marchwood is Millbrook (Hants) station, about 1.6 miles north-east. A little further out are Netley Castle (4.1 miles east) and Westquay (2.1 miles east). Open spaces near Marchwood include Testwood Lakes.
Leave it or put it right?
It is cheaper to seal service penetrations as each services package finishes than to come back for them later. While the area is still open, every opening is easy to see and reach, and the right detail can be checked at the time. Small buildings around Marchwood suffer from failed joints as much as large ones. Early resealing avoids the damage that follows a leak.
A quote for service penetrations depends on how many there are, their condition and the access, and any specification that applies. Ask us for a fixed quote.
Why clients in Marchwood choose us
- Work to your specification and the manufacturer’s guidance
- Old sealant cut out, never sealed over
- A Constructionline member, so easy to vet
- One number for every site we cover
Read how commercial sealant jobs are priced or our accreditations.