Fire-rated sealing and fire stopping in Gosport, Hampshire
Planning work on a service penetration in Gosport? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Head-of-wall gaps with no fire seal
- Openings left by services added after handover
- Expanding foam used as fire stopping
Fire stopping in Gosport
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
What sealant work can’t fix
We check first that sealant really is the fix. It won’t put right:
- Construction that lacks the fire resistance the seal relies on
- Large openings beyond what any sealant detail covers
- Writing the fire-stopping specification
If in doubt, call 01277 525 020 or email drawings and photos and we will say what we think.
What we seal
- Linear gaps at wall heads
- Small duct penetrations where the tested detail allows
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Pipe penetrations
- Cable penetrations
How we handle fire stopping in Gosport
Where pipes, cables and other services cross a compartment wall or floor, the opening around them has to be closed so fire and smoke can’t move between compartments. Our part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. Each seal follows the manufacturer’s tested detail. We work on small duct penetrations where the tested detail allows, pipe penetrations and linear gaps at wall heads, and the failures we are asked to look at most are openings found when ceilings come down for a refit and damaged fire seals in risers and voids. Searching for sealant specialists in Gosport? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.
A job near Gosport is usually planned around one visit, with the specification and photos sent in advance. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.
We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.
- Where
- Gosport (SO51)
- Region
- Hampshire
- Guarantee
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Building owners, agents and FMs in Gosport
When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.
Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so the building keeps working while we do.
Compartments and services around Gosport
Central London is about 67 miles from Gosport. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls, and the gaps need sealing with the specified product. 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. Our part stays the same: the specified product, installed to its tested detail.
Older community buildings such as Church of St Mark that have been rewired or given new heating can have service gaps through walls worth checking against the specification. At a healthcare site like Romsey Hospital, 2.2 miles west of Gosport, new services through compartment walls are a constant, and each needs the specified seal.
Gosport is about 2 miles east of Romsey, in Hampshire. Anywhere in SO51, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Our Hampshire coverage takes in 723 places, from busy centres to rural villages. For work in that direction, see our Southampton page (6 miles or so).
Business premises anywhere in SO51 are within our area. Sites close to Gosport are covered too, including Ampfield (1 mile north-east), Crampmoor (1 mile west), Knapp (1 mile north-east), Broadgate (1 mile east) and Lower Slackstead (2 miles north). Nearby towns on our patch include Winchester (6 miles north-east), Eastleigh (5 miles south-east), Fareham (15 miles south-east), Andover (14 miles north), Totton (7 miles south-west) and Hedge End (8 miles south-east).
Landmarks near Gosport
In Gosport, that means premises near White Horse Public House and The Mountbatten School and the streets around them. For rail, the closest station is Chandlers Ford station, roughly 2.6 miles south-east of the centre. A little further out are King Johns House (2.9 miles west) and Romsey Community Hospital (2.2 miles west). Open spaces near Gosport include Emer Bog and Baddesley Common.
Our process
Before we leave any area, 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. Smaller jobs around Gosport can be grouped with others nearby. A fixed quote is given before anything starts.
- First we go through the drawings, schedule or specification for the seals and raise any questions before we price.
- On site, each opening is checked against the tested detail it is meant to follow.
- Unsuitable fillers and loose debris are taken out of each opening.
- Mineral wool or other backing goes in wherever the detail asks.
- We apply the specified sealant to the depth and around the services as the detail shows.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
Getting the site ready
- Send asbestos survey details if the building is pre-2000
- Explain the parking and delivery arrangements
- Tell staff and tenants when we will be in
Ask for a quote
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we will arrange a site visit if anything is unclear.
Related advice
What we are called out for in Gosport
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.
Typical triggers for a call:
- Openings found when ceilings come down for a refit
- Fire seals cut back for extra cables and never reinstated
- Fire-stopping items raised at inspection or handover
- Fire sealant pulled out of the opening
Schools such as Ampfield Church of England Primary School often have new data and services installed during holidays, and penetrations through fire-resisting walls should be checked afterwards.
Before you book anyone
- What the guarantee covers, and for how long
- How the joint faces will be prepared and primed
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- How they’ll work around occupants
FAQs: Gosport
Can you work in a care home near Gosport with residents in?
Yes, with the manager deciding the order and timing of rooms. Tell us about any infection-control or safeguarding requirements and we’ll work to them.
Is hospital work, at somewhere like Romsey Hospital, something you do?
Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.
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.
Do you offer coloured sealant?
Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We will confirm the colours available for the specified product.
Will you write the fire-stopping specification?
No. Deciding what is needed sits with the designer, fire engineer and building control. Our role is fitting the specified fire-rated sealant, following the maker’s tested details.
How long before the joints can be used?
Curing time varies by product, and we confirm it on the day.
Can weather delay the job?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
Nearby places to Gosport
What else we do in Gosport
What affects the price in Gosport
Sealant work doesn’t have a standard rate, since sites vary so much. What we take into account:
- Specialist products, such as fire-rated or hygienic sealants
- Quantities, in metres or numbers
- Whether the work must be split into stages
- Location, for remote and island sites
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
What to include in your enquiry
The more we know, the firmer the quote. Helpful details to send:
- The site address and postcode
- Approximate linear metres or a joint schedule
- Specification clauses that apply
- Your programme or deadline
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Why deal with it now?
Open penetrations multiply: each new service adds to the list. A schedule that is dealt with regularly stays manageable, rather than turning into a full building survey and reseal. Halls, stores and units around places like Gosport may not be checked every day, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.
The price depends on the quantity of joints, how much old material needs removing and the access. Call for a quote once you have the details.
Why us?
- 12-month guarantee on workmanship
- Work to your specification and the manufacturer’s guidance
- Constructionline member for supplier checks
- One number for every site we cover
Take a look at our cost guide or our accreditations and insurance.