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

Sandy Down fire stopping

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

  • Service penetrations left open after M&E works
  • Fire stopping installed outside its tested range
  • Fire-stopping items raised at inspection or handover
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Need fire stopping in Sandy Down?

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

Fire stopping in Sandy Down

Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4, with results classified under BS EN 13501-2. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. Reproducing the tested arrangement on site is the part we take care of. If you have fire seals cut back for extra cables and never reinstated and open linear gaps along the top of fire-resisting walls, we can put it right. Most enquiries from Sandy Down start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.

Around smaller places like Sandy Down, penetration seals come up in schools, halls, pubs with rooms, care homes and farm buildings used as offices. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Sandy Down (SO41)
Region
Hampshire
Cover
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

How a job runs

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Jobs in and around smaller places like Sandy Down are normally planned as a single visit, so we ask for photos and rough sizes first. That way the right products come on the day.

  1. We start with your penetration schedule, drawings or specification.
  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. Unsuitable material is removed and the opening cleaned first.
  5. The specified backing and sealant go in to depth and are finished neatly.
  6. Anything outside the detail is reported to you rather than sealed.

Before we start on site

  • Explain the parking and delivery arrangements
  • Have the specification and drawings to hand
  • Make sure the joints can be reached

Ask for a quote

For a fixed quote, call the office on 01277 525 020 or email a schedule or drawings, telling us the site location and the nature of the job. You can also send details through our quote form.

Get a quick quote

Advice

Penetration seals near Sandy Down

A number of hotels sit less than 2 miles from Sandy Down. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close. 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. What we install is set by the specification, and it goes in to the tested detail.

For a hospital such as Lymington New Forest Hospital (1.9 miles south of Sandy Down), penetration sealing is typically phased ward by ward, with infection-control rules agreed first. Older community buildings such as Church of St John that have been rewired or given new heating can have service gaps through walls worth checking against the specification.

Sandy Down is about 3 miles north of Lymington, in Hampshire. We cover commercial sites throughout Sandy Down, whether it’s a single job or part of a planned programme. Sandy Down is one of 723 places in Hampshire on our list for service penetrations. There’s a separate page for Southampton, roughly 11 miles from Sandy Down.

Postcode districts covered here: SO41. Among the streets we cover are Sandy Down, Lower Sandy Down and Hurstly Lane, and sites on any of them can send details for a fixed quote. We also cover Battramsley (1 mile south), Boldre (1 mile south-east), Mount Pleasant (1 mile south-west), Pilley (1 mile south-east) and Warborne (2 miles south-east) for service penetrations. Bigger towns within reach include Eastleigh (15 miles north-east), Totton (9 miles north), Chandler's Ford (15 miles north-east), Hedge End (14 miles north-east), Lymington (3 miles south) and Romsey (14 miles north).

Near you in Sandy Down

Locally, jobs take us to sites close to The Hobler Public House and the streets around them. Sandy Down’s nearest station is Brockenhurst station, about 1.6 miles north of the centre. Well-known places in the area include Lymington New Forest Hospital (1.9 miles south) and St Barbe Museum and Art Gallery (2.6 miles south). Open spaces near Sandy Down include Boldre Foreshore.

Map of Sandy Down © OpenStreetMap contributors

Work for main contractors and building owners

Hospitality, education, healthcare, office and retail clients come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.

Do you need fire stopping in Sandy Down?

Most open service penetrations are left by later work. New cabling, rerouted pipework or a data route drilled through a riser leaves an opening that nobody returns to. Across several fit-outs, the openings add up.

If one of these sounds familiar, it’s time for a closer look:

  • Open linear gaps along the top of fire-resisting walls
  • Hidden openings found during inspections
  • Openings left by services added after handover
  • Fire-stopping items raised at inspection or handover

Hotels such as Passford House Hotel, 1.3 miles to the south-west of Sandy Down, rely on fire-resisting walls between bedrooms and corridors, and refits that add services leave penetrations to seal where fire-rated sealant is specified.

What to look for in a quote

  • The named product and why it was chosen
  • Do they follow the manufacturer’s priming guidance?
  • How joint depth will be controlled
  • What the guarantee covers, and for how long

Questions to ask before you appoint anyone

What sealant work can’t fix

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • Fire doors, dampers or other fire safety equipment
  • Approving the work on behalf of building control
  • Deciding what a wall or floor needs, which belongs to the designer

If in doubt, give us a call on 01277 525 020 or email drawings and photos and we’ll say what we think.

Surfaces we seal

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

Why it’s worth doing now in Sandy Down

An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. While the openings can be reached, sealing them is normally straightforward. Left until ceilings are closed or a tenant moves in, the same work costs more access and more disruption. Converted and older buildings near places like Sandy Down tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.

The price depends on the quantity of joints, how much old material needs removing and how the joints are reached. Call for a fixed quote once you have the details.

Why appoint us

  • 12-month guarantee on workmanship
  • Public liability insurance in place
  • Joints cleaned back to sound surfaces
  • One number for every site we cover

Take a look at how commercial sealant jobs are priced and our accreditations.

Questions about Sandy Down

Can work at a site such as Brockenhurst College fit around teaching?

Yes. Tell us the term dates, vacation periods and access windows, and we will 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.

Do you take on work at healthcare sites like Lymington New Forest Hospital?

Yes, provided the work is planned with the site’s estates team. Work is phased so departments keep running, under the site’s own rules.

Do you seal openings left by new services?

Yes, where there is a specification for those walls and floors. New services after M&E works often breach existing seals and we close them with the specified product.

How long does a job like this take?

It depends on the scope, though a typical visit typically takes anything from one day to a planned run of visits, depending on the number of seals and the access. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

Do you take on multi-site work?

Yes. Several buildings can share a single quote, with one point of contact across South East England, Greater London and Scotland.

When is resealing likely to be due?

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

Is colour matching possible?

In many cases, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We will confirm the colours available for the specified product.

What the job involves on each surface

Linear joints

Linear joints run along the head of a wall, at a slab edge or between two fire-resisting elements. Their tested detail, under BS EN 1366-4, sets the width, depth, backing and movement allowed, and we work within it.

Risers and ceiling voids

Openings above suspended ceilings are easy to miss. We work through the areas on your schedule methodically, and note anything we find that isn’t on it.

Accreditations

Trusted. Accredited. Insured.