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

Fire Stopping in Sarisbury

Fire-rated and intumescent sealing of service penetrations and linear gaps across Sarisbury, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • Unsealed penetrations discovered above suspended ceilings
  • Penetration schedules that need working through
  • Open linear gaps along the top of fire-resisting walls
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Need fire stopping in Sarisbury?

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Fire stopping in Sarisbury, done properly

On a fit-out or refurbishment, we follow the services contractors floor by floor. To price a package, give us a call on 01277 525 020 or use the quote form with the schedule or marked-up drawings alongside the manufacturer’s details. Tell us what records you need and we’ll confirm with the quote. If you have fire-rated sealant that has cracked or shrunk back and seals disturbed by maintenance and left open, we can put it right. Whoever orders the work in Sarisbury, the brief is normally the same: a clear scope, tidy work and joints that don’t fail again.

Around smaller places like Sarisbury, many commercial buildings are conversions or extensions of older ones, so the wall or floor a service passes through isn’t always what the drawings assume. The right product depends on the wall or floor and the services passing through, and we’ll tell you if the detail calls for something other than sealant.

Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Sarisbury (SO31)
Wider area
Hampshire
Cover
12 months on our workmanship
Quote
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026

Common questions from Sarisbury clients

Can you work at a site such as Park Gate Business Centre, by Sarisbury?

Yes. We cover Sarisbury and the area around it, including industrial estates, business parks and retail parks such as Park Gate Business Centre. A few photos and the unit address let us price the work.

Would you work within a site like Fareham Community Hospital?

Yes, healthcare and care buildings are part of our work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Can you follow the specification on our project?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.

Is any job too small?

Small jobs are welcome alongside larger packages. Send details for a fixed quote.

Is colour matching possible?

Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We’ll confirm the colours available for the specified product.

Do you work in Scotland as well as England?

Scotland sets its own building regulations, with Technical Handbooks. Wherever the site is, our work follows the specification and the tested detail.

What do BS EN 1366-3 and BS EN 13501-2 mean?

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; installing to the detail is what carries that across to site.

Compartment walls and floors in Sarisbury

A number of hotels sit less than 2 miles from Sarisbury. In hotels, bedroom and corridor walls are usually fire-resisting, so services added in a refit need sealing with the specified product. 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. We install whatever has been specified, to the product’s tested detail.

For a building such as Church of St Paul, new heating or data runs are the usual reason penetrations need sealing. Theatres, wards and plant rooms at sites like Fareham Community Hospital, less than half a mile to the south-east of Sarisbury, all have compartment walls crossed by services. Offices at parks like Park Gate Business Centre (0.7 miles east of Sarisbury) are re-cabled with each new tenant, and compartment walls need sealing afterwards to the tested detail.

Sarisbury is about 3 miles south of Hedge End, in Hampshire. Sarisbury sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Sarisbury is one of 723 places we cover in Hampshire. Southampton is covered too, around 6 miles from Sarisbury.

We cover the SO31 postcode districts for service penetrations. Buildings on Woodlands Close, Bridge Road and Painswick Close are within our area. If your building is just outside Sarisbury, we cover Swanwick (1 mile north-west), Park Gate (1 mile east), Sarisbury Green (1 mile south-west), Locks Heath (1 mile south-east) and Lower Swanwick (1 mile north-west). Nearby towns on our patch include Winchester (13 miles north), Gosport (7 miles south-east), Havant (13 miles east), Eastleigh (7 miles north-west), Fareham (4 miles east) and Horndean (12 miles east).

Near you in Sarisbury

Recent enquiries here include premises near Brookfield Community School and Language College and The Old Ship Inn and the streets around them. Sarisbury’s nearest station is Swanwick station, about 0.7 miles east of the centre. A little further out are Coldeast (less than half a mile south) and Bursledon Brickworks Industrial Museum (1 mile north). Green spaces nearby include Swanwick Lakes.

Map of Sarisbury © OpenStreetMap contributors

Why it’s worth doing now in Sarisbury

It is cheaper to seal service penetrations as each services package finishes than to come back for them later. Openings are visible, access is open and nothing has to be taken down, and the right detail can be checked at the time. Small buildings around Sarisbury suffer from failed joints as much as large ones. Catching it early means a reseal rather than repairs.

The specified product makes a difference, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.

Why choose Mastic Doctor in Sarisbury

  • Fixed quotes based on photographs, drawings or a visit
  • CHAS accredited contractor
  • Commercial sealant work since 2005
  • Failed material removed, not covered up

Read our cost guide or our accreditations and insurance.

Cost factors for service penetrations

These are the things that shape the price:

  • Working within restricted access windows
  • Any access equipment needed
  • Travel to remote or island sites
  • The product specified

What a job costs comes down to how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a quote when you are ready.

What to include in your enquiry

Good information means a firmer quote. When you get in touch, include:

  • What the building is and how it’s used
  • Your programme or deadline
  • Specification clauses that apply
  • The asbestos register, for older buildings

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to ring 01277 525 020 or send photos by email with what you know.

What sealant work can’t fix

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Fire doors, dampers or other fire safety equipment
  • Signing off or certifying a building’s fire stopping
  • Openings that need collars, wraps, batts or boards rather than sealant

If in doubt, speak to us on 01277 525 020 or email the details over and we will say what we think.

Joints and surfaces we work on

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

Maintenance after handover

A few simple habits keep the new joints working:

  • Flag new cables with no seal around them
  • Put resealing into every M&E and fit-out package
  • Get seals inspected before ceilings and boxing close
  • Settle who seals which penetrations at the start of a project

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, by someone who knows the system.

Regular walk-rounds of service areas are worth the time. A cracked or disturbed seal found early is a small job; found late, it can be one of many.

Surface by surface

Risers and ceiling voids

Voids hide a lot of unsealed openings. We follow your schedule area by area, and note anything we find that isn’t on it.

Masonry and concrete

Many seals are made in blockwork, brickwork or concrete slabs. Dust and debris are cleared from the opening.

How a job runs

At the end of each section, we remove the tape, clean down and inspect every joint. Where the sealant needs time to cure before use, we tell you and sign the area. If neighbouring businesses or buildings around Sarisbury need work too, visits can be combined. Tell us your site hours and we’ll plan around them.

  1. The specification and schedule come first, so we know which details apply.
  2. We plan the sequence of floors, risers and voids with you.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Unsuitable material is removed and the opening cleaned so the seal starts clean.
  5. The specified backing and sealant go in to depth and are finished neatly.
  6. We tell you about openings that need a different product.

Getting the site ready

  • Tell us which areas need to stay in use
  • Explain the parking and delivery arrangements
  • Move anything stored against the joints

Quotes

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we will fill any gaps with a visit.

Get a price

Read more

Accreditations

Trusted. Accredited. Insured.