The Mastic Doctor team standing beside their branded vans outside an office building
Isle of Wight · England

Fire stopping in Southford

Need fire stopping in Southford? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Openings found when ceilings come down for a refit
  • Fire seals cut back for extra cables and never reinstated
  • Fire sealant pulled out of the opening
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Fire stopping across Southford

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

Fire stopping for commercial buildings in Southford

Fire-rated sealant suits many small service penetrations: copper and steel pipes, cables and some small ducts where the tested detail allows. Larger openings and some plastic pipes call for collars, wraps, batts or boards instead. We use sealant where it is the specified product, and we tell you when a detail calls for something else. If you are dealing with hidden openings found during inspections and fire-rated sealant that has cracked or shrunk back, we can help, on cable penetrations, small duct penetrations where the tested detail allows and pipe penetrations alike. A specialist sealant contractor works differently from a general builder: in Southford, that means joint design, primers and backing rod as standard.

A job near Southford is usually planned around one visit, so send the specification and photographs first. Design and sign-off belong to the designer or building control; we install what’s specified.

Every job is signed off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Southford (PO38)
Wider area
Isle of Wight
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Telephone
01277 525 020
Last updated
3 November 2026

Do you need fire stopping in Southford?

Plenty of openings were simply never closed, often hidden above suspended ceilings or behind boxing. Inspections, refurbishments and ceiling access typically bring them to light.

Site and facilities staff are often the first to spot these:

  • Head-of-wall gaps with no fire seal
  • Fire-rated sealant that has cracked or shrunk back
  • Builders’ foam or ordinary silicone in compartment walls
  • Service penetrations left open after M&E works

Large healthcare estates like Arthur Webster Memorial Hospital for Children, 4.5 miles north-east of Southford, change their services often, so penetration seals are worth checking after M&E work.

Questions to ask before you book

  • Will failed sealant be removed rather than covered?
  • How they’ll work around occupants
  • Proof of insurance
  • Do they follow the manufacturer’s priming guidance?

How to choose a sealant contractor

Leave it or put it right?

Fire stopping is a regular point raised at inspections and handover. Late discoveries can delay handover while openings are reopened and resealed which is why earlier is better. Around Southford, it’s better to renew all the failing joints at once. Send photographs of each area and we’ll quote for the lot.

There’s no price list, because the scope varies so much from one building to the next. Call for a quote.

Why us?

  • Fully insured, including public liability cover
  • CHAS accredited
  • Joints cleaned back to sound surfaces
  • Products installed to the manufacturer’s instructions

See how commercial sealant jobs are priced or our accreditations and insurance.

Keeping the joints sound

Problems stay small when the joints are checked regularly. In particular:

  • Keep general-purpose fillers away from compartment walls
  • Settle who seals which penetrations at the start of a project
  • Record which product was used where
  • Treat an open penetration as a priority repair

Allow the manufacturer’s stated cure time before boxing in or decorating. Some fire-rated sealants accept paint and some don’t, and the data sheet says which.

A simple record of seal locations and products helps. When a new service goes through, everyone knows which product and detail to match.

What sets the cost

To price the job, we consider:

  • How much existing material needs removing
  • Working within restricted access windows
  • Joint width, depth and condition
  • The site’s rules and procedures

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote and we’ll explain how it’s made up.

What we need to price the job

To price the job accurately, we need a clear picture of the site. Useful things to include:

  • When you need the work done
  • A wide shot and a close-up of the area
  • Approximate linear metres or a joint schedule
  • Asbestos survey details if the building is older

For a fixed quote, ring 01277 525 020 or email a schedule or drawings, telling us the site location and the nature of the job. Our quote form is another easy route.

Southford: questions and answers

Is Southford too far out for you?

No. Small places get the same service as large ones. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.

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

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.

How do we ask for a quote?

There are four steps: send details, get a quote, we seal, guaranteed. The first step only needs photos and a postcode.

Do you hold CHAS accreditation?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

What hours do you work?

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

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

Do you need to see the site first?

It depends on the job. Simple work can often be priced from photos, and bigger or more complex jobs typically get a visit.

Penetration seals near Southford

In England, Approved Document B covers fire stopping of 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. We install whatever has been specified, to the product’s tested detail.

In a building such as Church of St. Mary and St. Radegund, any service penetration through a fire-resisting wall should be sealed to the specified detail. For a unit at a site such as Wroxall Industrial Estate, 2.3 miles to the east of Southford, new power or data runs between office and warehouse can breach a compartment wall.

Southford is about 6 miles south of Newport, in the Isle of Wight. Commercial clients in Southford use us for work on service penetrations. We work across 125 places in the Isle of Wight, from busy centres to rural villages. Sites around Portsmouth have their own page, about 16 miles away.

Business premises anywhere in PO38 are within our area. We also cover Bierley (1 mile south-west), Nettlecombe (1 mile south-east), Godshill (2 miles north), Wroxall (2 miles east) and Sandford (2 miles north-east). Bigger towns within reach include Newport (6 miles north), Ryde (9 miles north-east), Cowes (10 miles north), Sandown (6 miles north-east), Shanklin (4 miles east) and Ventnor (3 miles east). For island and remote sites, travel and materials need planning ahead.

Landmarks near Southford

We work on buildings around The White Horse Inn, among other places. The nearest railway station is Shanklin station, roughly 4.5 miles north-east. Well-known places in the area include Blackgang Sawmill Museum (2.2 miles south-west) and Arthur Webster Memorial Hospital for Children (4.5 miles north-east). For a walk, there’s Stenbury Down.

Map of Southford © OpenStreetMap contributors

How the job changes by surface

Cables and cable bundles

Single cables and small bundles are often within a fire-rated sealant’s tested detail. The detail limits bundle size and the gaps between and around cables, so we check before sealing.

Drylining partitions

Drylined fire walls are tested in a particular build-up. We check that the product’s detail covers that partition type and board thickness first.

From enquiry to sign-off

Site rules come first: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. For work around Southford, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. We read the specification, drawings or penetration schedule you send and raise any questions before we price.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  3. Unsuitable fillers and loose debris are taken out of each opening.
  4. We fit the backing the detail asks for, to the stated depth.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

Preparing the site

  • Point out any areas we must not close
  • Share the asbestos register for older buildings
  • Point out parking and an unloading spot

Get a fixed quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, ring 01277 525 020 or email the details over.

Get a price

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