Fire-rated sealing and fire stopping in Crofton, Hampshire
Looking for fire stopping in Crofton? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Openings left by services added after handover
- Penetration schedules that need working through
- Improvised or mixed-product fire seals
Fire stopping near Crofton
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 Crofton
Fire-rated sealant suits many small service penetrations: copper and steel pipes, cables and some small ducts where the tested detail allows. Other openings need collars, wraps, batts, pillows or boards. We use sealant where it is the specified product, and we tell you when a detail calls for something else. Site teams most often ask us about snag lists that include open service penetrations and seals disturbed by maintenance and left open, across joints between fire-resisting walls and floors, pipe penetrations and cable penetrations. Facilities teams, main contractors and managing agents in Crofton tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
A job near Crofton is typically planned around one visit, so send the specification and photographs first. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.
A 12-month guarantee applies to all our work. If an installation problem shows up, give us a call on 01277 525 020 or send details through our quote form and we’ll arrange a return visit.
- Location
- Crofton (PO14, PO13)
- Region
- Hampshire
- Cover
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
What we can’t put right
A proper diagnosis includes knowing what sealant can’t do. You will hear from us if the cause turns out to be one of these:
- Gaps in walls that were never built as compartment walls
- Deciding what a wall or floor needs, which belongs to the designer
- Approving the work on behalf of building control
Not sure which it is? You can ring 01277 525 020 or use the quote form and we will tell you honestly before you book.
Surfaces we seal
- Linear gaps at wall heads
- Joints between fire-resisting walls and floors
- Cable penetrations
- Service gaps in risers
- Small duct penetrations where the tested detail allows
- Pipe penetrations
Surface by surface
Drylining partitions
Plasterboard partitions are tested as a specific construction. The sealant detail has to be tested in that wall type, with the stated board layers.
Plastic pipes
Plastic pipes soften and collapse in a fire. Small sizes are sometimes covered by an intumescent sealant detail, though larger ones normally call for a collar or wrap. We confirm material and size first and tell you if sealant isn’t the right product.
FAQs: Crofton
Is a hospital such as Gosport War Memorial Hospital somewhere you can work?
Yes, hospitals are one of the sectors we cover. We follow the site’s permits, sign-in and infection-control procedures in every area.
Can you work around term dates at a campus such as University of Portsmouth - North Zone?
Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
How long does a typical visit take?
The duration is planned around your programme and the access we’re given. You will have an expected duration with the quote.
How long do sealant joints last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.
Do you design or specify fire stopping?
No. The specification comes from your designer, fire engineer or building control. Our role is fitting the specified fire-rated sealant, following the maker’s tested details.
What site paperwork can you supply?
Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we will confirm with the quote.
What’s the quickest route to a quote?
There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photos and a postcode.
Should maintenance staff do it?
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Leave it or put it right?
An unsealed opening affects more than fire safety: smoke, noise and draughts pass through them every day. The specified fire seal closes the gap for all of these. One visit to deal with every failing joint makes more sense than several trips to a place like Crofton, rather than one at a time. Photos of every joint help us quote for the whole job.
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 fixed quote when you’re ready.
Why choose Mastic Doctor in Crofton
- Work carried out by CSCS-carded applicators
- A Constructionline member, so easy to vet
- Public liability insurance in place
- Over 20 years of commercial sealing
Read our cost guide and our accreditations.
Our process
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. For work around Crofton, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- The specification and schedule come first, so we know which details apply.
- We plan the sequence of floors, risers and voids with you.
- Each opening is checked for wall or floor type, service, gap and depth.
- Foam, ordinary sealant and debris come out first.
- Backing and fire-rated sealant are installed to the detail and tooled.
- We tell you about openings that need a different product.
Getting the site ready
- Tell us your opening times and when work is allowed
- Explain the parking and delivery arrangements
- Confirm the product named in the specification
Quotes
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, give us a call on 01277 525 020 or email the details over.
Read more
Compartment walls and floors in Crofton
In England, Approved Document B covers fire stopping of 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. We install whatever has been specified, to the product’s tested detail. There are several hotels within about 2 miles of Crofton. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close.
Refits at places like Speedfields Retail Park (to the north-east of Crofton) often reroute services through walls between units. For a site team at a college like Fareham College, which lies north of Crofton, fire-rated sealing is best scheduled after the summer works. Campus buildings at universities such as University of Portsmouth - North Zone (4.6 miles east of Crofton) see constant changes to data and services, and fire-rated sealant goes in around new penetrations where it is specified.
Crofton is about 1 mile east of Stubbington, in Hampshire. Anywhere in PO14, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Crofton is one of 723 places in Hampshire on our list for service penetrations.
Business premises anywhere in PO14 and PO13 are within our area. Buildings on Mark's Road, Gosport Road and Newgate Lane are within our area. Sites close to Crofton are covered too, including Peel Common (1 mile east), Rowner (1 mile east), Bridgemary (1 mile east), Lee-on-the-Solent (1 mile south) and Fareham (2 miles north). Nearby towns on our patch include Havant (10 miles east), Eastleigh (12 miles north-west), Horndean (10 miles north-east), Totton (15 miles north-west), Chandler's Ford (14 miles north-west) and Hedge End (8 miles north-west).
Around Crofton
Around Crofton, our work takes us to commercial buildings near Baycroft School and Peel Common Infant School and Nursery Unit and the streets around them. For rail, the closest station is Fareham station, about 2.1 miles north of the centre. A little further out are Gosport War Memorial Hospital (3 miles south-east) and Carron Row Farm Museum (3 miles north-west). Green spaces nearby include Portsdown Hill and West of the River Alver.
Nearby places to Crofton
Also in Crofton
Commercial clients in Crofton
CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.
We work for building owners and managing agents on sealant work across single buildings or whole portfolios. Several sites can go on one quote, so there’s one set of paperwork to deal with.