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

Fire stopping in Welborne

Work needed on a service penetration in Welborne? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Fire stopping installed outside its tested range
  • Non-fire-rated filler around services
  • Penetration schedules that need working through
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Fire stopping in Welborne

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Building owners, agents and FMs in Welborne

When you manage a building on behalf of an owner, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

How we handle fire stopping in Welborne

A lot of fire-stopping work comes after M&E installation, a refit or a tenant fit-out. Each new cable, pipe or data route cut through a fire-resisting wall leaves an opening behind, and they are easy to forget. Those on your schedule are closed with the specified product. The enquiries we see most involve fire-stopping items raised at inspection or handover and seals that don’t match their tested detail, on pipe penetrations, small duct penetrations where the tested detail allows and joints between fire-resisting walls and floors. Whether you call it commercial sealant work, mastic application or joint sealing, in Welborne it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Smaller places such as Welborne still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. Any service penetration through those walls should be closed with the specified product, set out as its test evidence shows.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Welborne (PO17)
Wider area
Hampshire
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026

Surface by surface

Linear joints

Head-of-wall joints often have to absorb slab deflection. We use the product and backing the detail names for that movement, with no gaps along the run.

Plastic pipes

Waste and drainage pipes through floors are a frequent case. The detail decides whether sealant alone is enough, and we will never swap a specified collar for sealant.

Fire-rated sealing for Welborne buildings

Central London is about 64 miles from Welborne. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls. 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. What we install is set by the specification, and it goes in to the tested detail.

Tenant changes at centres like Broadcut Retail Park, 1.7 miles south-east of Welborne, often mean new services through walls between units. Colleges such as Fareham College (to the south of Welborne) add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product.

Welborne is about 2 miles north of Fareham, in Hampshire. Any commercial site in Welborne is covered, whether it’s a single job or part of a planned programme. Our Hampshire coverage takes in 723 places. Portsmouth is covered too, some 7 miles away.

Postcode districts covered here: PO17. If your building is just outside Welborne, we cover Crockerhill (1 mile east), Wickham Common (1 mile north-east), North Fareham (1 mile south-east), Hundred Acres (2 miles north-east) and Fareham (2 miles south). Bigger towns within reach include Winchester (13 miles north-west), Gosport (6 miles south), Havant (9 miles east), Eastleigh (9 miles north-west), Horndean (8 miles east) and Totton (14 miles west).

Near you in Welborne

Around Welborne, our work takes us to commercial buildings near The Miners Arms and the streets around them. The nearest railway station is Fareham station, roughly 1.9 miles south. Other landmarks nearby include Carron Row Farm Museum (2.4 miles south-west) and Portchester Castle (4.5 miles south-east). The countryside around Welborne includes Portsdown Hill and Swanwick Lakes.

Map of Welborne © OpenStreetMap contributors

Looking after the joints

Every sealant joint needs some looking after, and how long they last depends on how they’re treated. We suggest:

  • Ask which product is in place before decorating
  • Put resealing into every M&E and fit-out package
  • Keep general-purpose fillers away from compartment walls
  • Record which product was used where

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 using the same product.

Make reporting new openings part of every permit to work in service areas. Small habits like this stop openings building up.

Common questions from Welborne clients

Can you work on a hospital site such as Knowle Hospital?

Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Is a smaller place like Welborne outside your area?

Not at all. Welborne is within our area. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.

How do we ask for a quote?

There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photos and a postcode.

Which standards are fire seals tested to?

The tests are BS EN 1366-3 for penetrations and BS EN 1366-4 for linear joints, and classification is to BS EN 13501-2. EI 60 means integrity and insulation for 60 minutes in the tested arrangement and the installation has to match the test.

Can you handle several sites?

Yes. Several buildings can share a single quote, with one point of contact.

Do you take on small jobs?

Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.

Do you seal openings left by new services?

Yes, provided a specification covers them. New services after M&E works often breach existing seals and we close them with the specified product.

What we’re called out for in Welborne

Mixing products or improvising a detail breaks the link with the test evidence. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are what we find most often.

Things that usually lead to an enquiry:

  • Unsealed penetrations discovered above suspended ceilings
  • Fire seals cut back for extra cables and never reinstated
  • Non-fire-rated filler around services
  • Fire-rated sealant that has cracked or shrunk back

Wherever services are added at a hospital such as Knowle Hospital, 0.5 miles west of Welborne, the compartment line has to be made good with the specified product.

Questions to ask before you book

  • Which product they’ll use, and why it suits the joint
  • Will RAMS and insurance details be available?
  • Whether primer will be used where the manufacturer specifies it
  • The terms of the workmanship guarantee

Our contractor checklist

What sets the cost

Quotes vary with the job. Expect it to depend on:

  • Specialist products, such as fire-rated or hygienic sealants
  • How accessible the joints are
  • The total length or number of joints
  • Location, for remote and island sites

There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote and we will price your job on its own details.

What we need to price the job

The more we know, the firmer the quote. Helpful details to send:

  • The product your specification calls for
  • The type of building and who uses it
  • The asbestos register, for older buildings
  • Access details, including height

A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or speak to us on 01277 525 020 or send photos by email if you’d rather talk the job through.

Diagnose, treat, sign off

At the end of each section, the masking comes off, the area is cleaned and every joint is checked with your site contact. If an area should be left alone while the sealant cures, we say how long and put signs out. For work around Welborne, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. The specification and schedule come first, so we know which details apply.
  2. Access, permits and the order of areas are agreed with the site team.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Foam, ordinary sealant and debris come out so the seal starts clean.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. We tell you about openings that need a different product.

Before we start on site

  • Explain the parking and delivery arrangements
  • Clear stock, furniture or equipment away from the joints
  • Send any specification or drawings in advance

Quotes

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, speak to us on 01277 525 020 or email the details over.

Get a price

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