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

Fire-rated sealing and fire stopping in Ashlett, Hampshire

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Ashlett and the surrounding area. Send photographs or drawings for a fixed quote.

  • Damaged fire seals in risers and voids
  • Snag lists that include open service penetrations
  • Fire stopping installed outside its tested range
1
Send details
Tell us about the site, with photos if you have them.
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
£5m PL insurance

Fire stopping for Ashlett sites

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

How we handle fire stopping in Ashlett

Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. So our job is to reproduce that arrangement faithfully. We work on small duct penetrations where the tested detail allows, joints between fire-resisting walls and floors and service gaps in risers, and what we’re called in for most is unsealed penetrations discovered above suspended ceilings and open linear gaps along the top of fire-resisting walls. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Ashlett is the same: the right product in a properly prepared joint.

Rural conversions around Ashlett can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.

We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Ashlett (SO45)
Wider area
Hampshire
Guarantee
12 months on every job
Quotes
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026

Signs you need fire stopping in Ashlett

Most open service penetrations are left by later work. New cabling, rerouted pipework or a data route drilled through a riser can leave the hole behind. Over a few years of fit-outs, a wall can collect a lot of these.

Typical triggers for a call:

  • Unsealed joints where partitions meet the slab
  • Damaged fire seals in risers and voids
  • Fire stopping installed outside its tested range
  • Old intumescent sealant that has split away

On a site such as Ensign Way Business Park, 2.2 miles north of Ashlett, every fit-out that runs new services through a compartment wall leaves penetrations to seal with the specified product.

What to look for in a quote

  • What level of public liability insurance do they hold?
  • Their plan for phasing and protecting the area
  • Their approach to joint depth and backing
  • How the existing material will be dealt with

Our contractor checklist

Keeping the joints sound

Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. Our advice:

  • File the specified details where the next contractor can find them
  • Leave fire sealant to cure fully before covering it
  • Ask the designer to confirm details early on refits
  • Flag new cables with no seal around them

After every round of M&E works, check that the openings created have been sealed. Building it into each contractor’s sign-off keeps the walls intact.

On fit-outs, get the fire-stopping specification agreed before the services go in. The designer can then choose details that suit the services planned, and the work runs in step with the M&E.

From enquiry to sign-off

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then reopened once the sealant allows before the next one starts. Smaller jobs around Ashlett can be grouped with others nearby, which keeps travel down. A fixed quote is given before anything starts.

  1. We ask for the product and detail your designer has specified.
  2. Openings are measured and grouped by detail.
  3. Old or wrong materials are cut out.
  4. Mineral wool or other backing is fitted where required.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

Preparing the site

  • Send any specification or drawings in advance
  • Send asbestos survey details if the building is pre-2000
  • Let building users know which areas are affected

Request a quote

Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.

Get a quick quote

Advice

Questions we’re asked in Ashlett

Is Ashlett too far out for you?

Not at all. Ashlett is within our area. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

Does your area include sites such as Ensign Way Business Park, near Ashlett?

Yes, sites like Ensign Way Business Park are within our area, along with the rest of Ashlett. Photos and a short description are enough for a first look.

Can you reseal penetrations after our M&E works?

Yes. Share the penetration schedule and product details and a fixed quote follows. Work can run area by area behind the M&E trades keeping pace with the programme.

Do you certify or sign off fire stopping?

No. Sign-off isn’t ours to give, and we don’t hold a third-party installer certificate. Our part is fitting the specified product to its tested detail, and any records you need can be confirmed with the quote.

Can you tell us what fire stopping our building needs?

No, that isn’t our role. Once you have a specification, we can price and install the sealant elements of it and point out anything needing another product.

Are you fully insured?

Yes. Mastic Doctor is fully insured, public liability included.

Will you just go over the old sealant?

No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.

What sets the cost

Your fixed quote is built from the real scope. It allows for:

  • How accessible the joints are
  • Quantities, in metres or numbers
  • Which sealant the job calls for
  • The size and state of each joint

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Details that help us quote

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

  • Photos of the joints, close up and from further back
  • Specification clauses that apply
  • The asbestos register, for older buildings
  • Access details, including height

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we’ll arrange a site visit if anything is unclear.

What happens if it’s left?

Sealing behind the M&E trades area by area beats a sweep at the end. While the area is still open, every opening is easy to see and reach and each detail can be checked as we go. Older rural buildings around Ashlett move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.

We don’t publish prices, since every building and every scope is different. Call for a quote and we will price your job on its own details.

Why us?

  • Our applicators hold CSCS cards
  • Specification-led, product-correct work
  • A Constructionline member, so easy to vet
  • Health and safety: CHAS accredited

See our cost guide or our accreditations.

Work for main contractors and building owners

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.

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.

Service penetrations in Ashlett buildings

Approved Document B is the English guidance that covers fire stopping around openings and penetrations. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail.

In a hotel such as Falcon Hotel, which lies west of Ashlett, new pipework or cabling through bedroom and corridor walls needs sealing with the specified product. Halls and meeting rooms at places like Church of All Saints sometimes gain new services, and any compartment wall crossed needs the specified seal.

Ashlett is about 4 miles south-east of Hythe, in Hampshire. We cover commercial sites throughout Ashlett. Ashlett is one of 723 places we cover in Hampshire. For work in that direction, see our Southampton page, about 7 miles away.

We cover the SO45 postcode districts. Sites close to Ashlett are covered too, including Stonehills (1 mile south-west), Fawley (1 mile west), Sprat's Down (1 mile south), Calshot (1 mile south-east) and Blackfield (1 mile south-west). Further afield, our area takes in Gosport (8 miles east), Eastleigh (10 miles north), Fareham (7 miles east), Horndean (15 miles east), Totton (10 miles north-west) and Chandler's Ford (11 miles north).

Near you in Ashlett

We work on buildings around The New Forest Academy and Falcon Hotel and the streets around them. For rail, the closest station is Hamble station, roughly 3.1 miles north. Nearby you will also find Calshot Castle (1.6 miles east) and Coldeast (4 miles north-east). Not far away are Mercury Marshes.

Map of Ashlett © OpenStreetMap contributors
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