The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Fire-rated sealing and fire stopping in Wallington, Hampshire

Commercial sealant work in Wallington for contractors, FMs and building owners: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.

  • Seals disturbed by maintenance and left open
  • Hidden openings found during inspections
  • Head-of-wall gaps with no fire seal
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Fire stopping for Wallington sites

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Fire stopping in Wallington

A lot of fire-stopping work comes after M&E installation, a refit or a tenant fit-out. New cable runs, replaced pipework and extra data routes all punch holes in compartment walls, often unnoticed. We close the openings listed on your schedule, using the specified sealant and detail. Site teams most often ask us about openings found when ceilings come down for a refit and old intumescent sealant that has split away, on linear gaps at wall heads, small duct penetrations where the tested detail allows and joints between fire-resisting walls and floors. Whoever orders the work in Wallington, the brief is normally the same: a clear scope, tidy work and joints that don’t fail again.

Buildings in a smaller place such as Wallington 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’re clear about what is covered before work starts.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Wallington (PO16, PO14, PO17)
Region
Hampshire
Cover
A 12-month guarantee
Price
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026

Different surfaces, different methods

Masonry and concrete

Openings through concrete vary from tidy cores to rough break-outs. Each gap is measured where it is widest so we know it sits within the tested range, and any outside it are raised with you.

Cables and cable bundles

New data and power cables are the most common breach we see. Openings around new cables are resealed to the detail.

How the quote is worked out

Each job is priced on its own details. The main factors are:

  • Distance, for remote addresses
  • Access and working height
  • The size and state of each joint
  • Site requirements such as inductions and permits

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we’ll explain how it’s made up.

Before you send an enquiry

A few photographs plus some basic facts will normally do. Please tell us:

  • How the joints are reached, and at what height
  • Approximate linear metres or a joint schedule
  • What the building is and how it’s used
  • The product your specification calls for

The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or phone 01277 525 020 or email drawings and photos to discuss it first.

Our process

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. What matters most for a job in Wallington is a clear list of what needs doing. A fixed quote follows.

  1. We ask for the product and detail your designer has specified.
  2. Openings are measured and grouped by detail.
  3. Improvised fillers and failed sealant are removed.
  4. Where the detail needs backing, it goes in at the stated depth.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. Completed areas are checked with you, with the records agreed when we quoted.

Preparing the site

  • Send your site hours and access windows
  • Point out any areas we must not close
  • Point out parking and an unloading spot

Get a fixed quote

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, ring 01277 525 020 or email a schedule or drawings.

Get a price

Related advice

What we can’t put right

Not every problem is a sealant problem, and we’re upfront when that’s the case. It won’t fix:

  • Gaps in walls that were never built as compartment walls
  • Deciding what a wall or floor needs, which belongs to the designer
  • Large openings beyond what any sealant detail covers

Not sure which it is? You can ring 01277 525 020 or email a schedule or drawings and we’ll tell you honestly before you book.

Where we work in Wallington

  • Service gaps in risers
  • Cable penetrations
  • Pipe penetrations
  • Small duct penetrations where the tested detail allows
  • Joints between fire-resisting walls and floors
  • Linear gaps at wall heads

Penetration seals near Wallington

For England, the fire stopping of penetrations is dealt with in 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. Wallington lies roughly 64 miles out from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls.

At a college such as Fareham College, 1.3 miles west of Wallington, checking penetration seals after summer M&E works is good practice. Hospital estates such as Knowle Hospital, 2.3 miles to the north-west of Wallington, are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail. At a retail site such as Broadcut Retail Park, which lies north-west of Wallington, walls between units may be fire-resisting, so services added in a refit need the specified seal.

Wallington is about 1 mile east of Fareham, in Hampshire. Our applicators travel to Wallington for work on service penetrations. 723 places across Hampshire fall within our area, including Wallington.

Anyone looking for fire stopping in PO16, PO14 and PO17 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. For a building on Bath Lane, Drift Road and Osborn Road or nearby, send details and we’ll quote for service penetrations. With the A32 nearby, Wallington is straightforward for us to reach. Sites close to Wallington are covered too, including Fareham Common (1 mile south-west), North Fareham (1 mile north), Fareham (1 mile west), Boarhunt (2 miles north-east) and Crockerhill (2 miles north). A short drive away, we cover Gosport (4 miles south), Havant (8 miles east), Eastleigh (11 miles north-west), Horndean (8 miles north-east), Totton (15 miles west) and Chandler's Ford (13 miles north-west).

Near you in Wallington

Recent enquiries here include premises near Harrison Primary School, Cams Hill School and The Golden Lion Public House and the streets around them. For rail, the closest station is Fareham station, roughly 1 mile west. A little further out are Fareham Shopping Centre (less than half a mile west) and Knowle Hospital (2.3 miles north-west). For a walk, there’s Portsdown Hill and West of the River Alver.

Map of Wallington © OpenStreetMap contributors

Questions we’re asked in Wallington

How does the move away from BS 476 affect penetration seals in Wallington?

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. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.

Can you work around term dates at a campus such as Fareham College?

Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

What hours do you work?

The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

How do you choose the sealant?

If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Is it fine to apply new sealant on top of old?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.

How long does a job like this take?

It depends on the scope, though a typical visit 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’ll set out a timescale with the quote.

When to bring in a specialist

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Looking after the joints

Regular inspection catches problems early. Specifically:

  • Keep product data and details in the fire safety file
  • Keep general-purpose fillers away from compartment walls
  • Leave fire sealant to cure fully before covering it
  • Settle who seals which penetrations at the start of a project

New services after handover are a common way fire stopping gets breached. Building it into each contractor’s sign-off keeps the walls intact.

A simple record of seal locations and products helps. It tells the next contractor exactly what to reinstate, and it helps at inspections.

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