Fire-rated sealing and fire stopping in Gibraltar, Buckinghamshire
Fire stopping for Gibraltar, from a contractor working since 2005. Fully insured and CHAS accredited.
- Old intumescent sealant that has split away
- Builders’ foam or ordinary silicone in compartment walls
- Head-of-wall gaps with no fire seal
Fire stopping in Gibraltar
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Fire stopping in Gibraltar
No fire sealant works on its own: the evidence covers a specific product, wall or floor type, service, gap, depth and backing. Before we seal anything, we check the opening against the detail it is meant to follow. We work on joints between fire-resisting walls and floors, pipe penetrations and small duct penetrations where the tested detail allows, and the failures we are asked to look at most are non-fire-rated filler around services and snag lists that include open service penetrations. A single leaking joint is often how a building in Gibraltar first comes to us: we look at the rest while we are there and tell you what we find.
Around smaller places like Gibraltar, 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.
Our workmanship is guaranteed for 12 months. If our installation lets you down in that time, we return and fix it.
- Location
- Gibraltar (HP17, HP18)
- Wider area
- Buckinghamshire
- Cover
- 12 months on every job
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
From enquiry to sign-off
Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself normally takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence, and our waste is bagged and taken away as we go. Jobs in and around smaller places like Gibraltar are typically planned as a single visit, so photos and measurements up front really help. That way the right products come on the day.
- We read the specification, drawings or penetration schedule you send and raise any questions before we price.
- On site, each opening is checked against the tested detail it is meant to follow.
- Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
- Mineral wool or other backing goes in wherever the detail asks.
- Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
What we need from you
- Let building users know which areas are affected
- Tell us which areas need to stay in use
- Move anything stored against the joints
Quotes
Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Read more
Surface by surface
Masonry and concrete
Many seals are made in blockwork, brickwork or concrete slabs. Dust and debris are cleared from the opening, with backing added if the detail requires it.
Plastic pipes
Plastic waste pipes through slabs come up often. The detail decides whether sealant alone is enough, and we won’t substitute it for a specified collar.
Nearby places to Gibraltar
Other services in Gibraltar
When to call us in Gibraltar
Physical damage is another reason seals stop doing their job. Seals get knocked during maintenance, cut back to add a cable or pulled out when services are swapped, and the repair is often skipped.
Things that normally lead to an enquiry:
- Seals disturbed by maintenance and left open
- Unsealed joints where partitions meet the slab
- Fire-rated sealant that has cracked or shrunk back
- Builders’ foam or ordinary silicone in compartment walls
At a university such as University Campus Aylesbury Vale, which lies east of Gibraltar, labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work.
Questions to ask before you book
- The terms of the workmanship guarantee
- Which product they’ll use, and why it suits the joint
- Whether primer will be used where the manufacturer specifies it
- How the existing material will be dealt with
What sealant work can’t fix
Not every problem is a sealant problem, and we’d rather tell you before you spend money. These need a different solution:
- Gaps in walls that were never built as compartment walls
- Large openings beyond what any sealant detail covers
- Signing off or certifying a building’s fire stopping
If in doubt, speak to us on 01277 525 020 or email us and we’ll say what we think before you book.
What we seal
- Joints between fire-resisting walls and floors
- Service gaps in risers
- Small duct penetrations where the tested detail allows
- Pipe penetrations
- Linear gaps at wall heads
- Cable penetrations
Leave it or put it right?
A seal that doesn’t match its tested detail gives false comfort. Correcting it means cutting it out and starting again with the specified product, so it makes sense to get it right first time. For buildings around smaller places like Gibraltar, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.
Why choose Mastic Doctor in Gibraltar
- Constructionline member
- Over 20 years of commercial sealing
- CHAS accredited
- Specification-led, product-correct work
Take a look at how commercial sealant jobs are priced and our accreditations and insurance.
How the quote is worked out
Your fixed quote is built from the real scope. It allows for:
- Backing rod, priming and other preparation
- Induction, permit and paperwork requirements
- How much there is to seal
- Travel to remote or island sites
The price depends on how many linear metres there are, how much old material needs removing and the access. Call for a quote once you have the details.
What to include in your enquiry
The more we know, the firmer the quote. Helpful details to send:
- The postcode of the building
- The product your specification calls for
- Clear photographs of the problem areas
- The type of building and who uses it
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
Penetration seals near Gibraltar
At about 40 miles from central London, Gibraltar is within reach of the capital. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. Fire stopping of openings and penetrations in England falls under Approved Document B. 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. We install whatever has been specified, to the product’s tested detail.
In a building such as Church of Saints Peter and Paul, any service penetration through a fire-resisting wall should be sealed to the specified detail. For a unit at a site such as Haddenham Industrial Park (1.7 miles south-west of Gibraltar), new power or data runs between office and warehouse can breach a compartment wall.
Gibraltar is about 3 miles south-west of Haydon Hill, in Buckinghamshire. Anywhere in HP17, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Gibraltar is one of 308 places we cover in Buckinghamshire for service penetrations. There’s a separate page for Oxford, roughly 14 miles from Gibraltar.
Commercial sites across HP17 and HP18 are covered. For a building on New Road, Brogan Place and Donnington Row or nearby, we can quote for service penetrations. Just outside Gibraltar, we also work in Cuddington (1 mile west), Haddenham (2 miles south-west), Chearsley (2 miles west), Kingsey (3 miles south) and Towersey (4 miles south-west). A short drive away, we cover Aylesbury (4 miles north-east), High Wycombe (13 miles south-east), Chesham (14 miles south-east), Buckingham (15 miles north), Amersham (15 miles south-east) and Elmhurst (5 miles north-east).
Local landmarks in Gibraltar
In Gibraltar, that means premises near The Seven Stars Public House, among other places. The closest station to Gibraltar is Haddenham & Thame Parkway station, roughly 2.2 miles south-west. Nearby you will also find St John's Hospital (1.4 miles north-east) and Dinton Castle (0.6 miles north-east). Open spaces near Gibraltar include Snakemoor.
Gibraltar: questions and answers
Is a hospital such as St John's Hospital somewhere you can work?
Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.
What does the BS 476 change mean for fire-rated sealant in Gibraltar?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.
Do you work to architects’ specifications?
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.
Can the sealant be colour-matched?
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’ll confirm the colours available for the specified product.
Will your applicators have CSCS cards?
Yes. If you need card details for site access, let us know and we will send them with the quote.
Can you quote from photos?
That depends on the size and complexity of the job. Simple work can often be priced from photos, while larger or less clear jobs get a site visit first.
Is any job too small?
We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.