Fire stopping in Locks Heath
Fire-rated and intumescent sealing of service penetrations and linear gaps in Locks Heath and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Hidden openings found during inspections
- Old intumescent sealant that has split away
- Head-of-wall gaps with no fire seal
Fire stopping across Locks Heath
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Fire stopping for commercial buildings in Locks Heath
Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We don’t hold a third-party fire-stopping installer certificate and we’d rather say that up front. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. If you have head-of-wall gaps with no fire seal and service penetrations left open after M&E works, we can put it right, on pipe penetrations, linear gaps at wall heads and service gaps in risers alike. Most enquiries from Locks Heath start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
Converted and extended buildings around places like Locks Heath can mix old and new construction, so it’s worth confirming the wall or floor type before choosing the seal. We match the product to the substrate and service, and say so if a collar, wrap or batt is the specified item.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Where
- Locks Heath (SO31, PO14, PO15)
- Wider area
- Hampshire
- Cover
- 12 months on every job
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
What sealant work can’t fix
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be any of the following:
- Walls or floors that aren’t fire-resisting to begin with
- Large openings beyond what any sealant detail covers
- Fire doors, dampers or other fire safety equipment
Not sure which it is? You can phone 01277 525 020 or email us and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Small duct penetrations where the tested detail allows
- Linear gaps at wall heads
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Cable penetrations
- Pipe penetrations
Fire-rated sealing for Locks Heath buildings
For England, the fire stopping of penetrations is dealt with in 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. What we install is set by the specification, and it goes in to the tested detail. At about 67 miles from central London, Locks Heath is within reach of the capital. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls; the gaps need the specified seal.
In a school such as Park Gate Primary School, fire-rated sealant goes in around service penetrations where it is specified. For a building at a site such as Park Gate Business Centre (0.9 miles north of Locks Heath), a check of penetration seals after each fit-out is good practice. Large healthcare estates like Fareham Community Hospital (to the north-west of Locks Heath) change their services often, so penetration seals are worth checking after M&E work.
Locks Heath is about 3 miles west of Fareham, in Hampshire. We cover commercial sites throughout Locks Heath. Across Hampshire, 723 places are covered, Locks Heath among them. There’s a separate page for Southampton, about 7 miles away.
We take on service penetrations across the SO31, PO14 and PO15 postcode area, whatever the building. Buildings on Church Road, Lower Church Road and Laxton Close are within our area for service penetrations. Sites close to Locks Heath are covered too, including Titchfield Common (1 mile south-east), Park Gate (1 mile north), Warsash (1 mile south-west), Sarisbury (1 mile north-west) and Segensworth (1 mile north-east). A short drive away, we cover Winchester (14 miles north), Gosport (6 miles south-east), Havant (12 miles east), Eastleigh (8 miles north-west), Fareham (3 miles east) and Horndean (12 miles east).
Landmarks near Locks Heath
Locally, jobs take us to sites close to Brookfield Community School and Language College and Jolly Farmer Public House. For rail, the closest station is Swanwick station, roughly 0.9 miles north of the centre. Nearby you’ll also find St Andrew's Castle (2.2 miles west) and Carron Row Farm Museum (1.6 miles east). Green spaces nearby include Holly Hill Woodland Park.
Why act early in Locks Heath
Inspections and handover checks often pick up fire stopping. Finding unsealed or improvised openings late can hold up a programme, so earlier action pays back. Sealant hardens, cracks and loses grip with age, UV and movement. Renewing it in good time keeps the building weathertight.
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.
Why choose Mastic Doctor in Locks Heath
- Fixed quotes based on photos, drawings or a visit
- One phone line for London, the South East and Scotland
- Constructionline member
- Sealing commercial buildings since 2005
Take a look at our cost guide or our accreditations.
How a job runs
Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and move on in phases so staff and visitors can carry on around us. For a site in Locks Heath, we plan so the whole job is done in one go where possible. Photos with rough sizes let us arrive with everything needed.
- First we confirm the product and tested details named in the specification.
- Openings are measured and grouped by detail.
- Old or wrong materials are cut out.
- Mineral wool or other backing is fitted where required.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- Completed areas are checked with you, with the records agreed when we quoted.
What we need from you
- Have the specification and drawings to hand
- Send your site hours and access windows
- Agree which areas must stay open
Ask for a quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.
Read more
Different surfaces, different methods
Plastic pipes
Waste and drainage pipes through floors are a frequent case. The detail decides whether sealant alone is enough, and we’ll never swap a specified collar for sealant.
Drylining partitions
Holes in board are often cut larger than needed. An oversized hole may be outside the sealant’s range and we’ll tell you what the detail says instead.
Towns and villages near Locks Heath
Other services in Locks Heath
Quoting for work in Locks Heath
A fixed quote reflects the actual work. It allows for:
- Induction, permit and paperwork requirements
- Travel to remote or island sites
- How accessible the joints are
- The total length or number of joints
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.
Details that help us quote
The more we know, the firmer the quote. Helpful details to send:
- Anything awkward about access or site hours
- Asbestos survey details if the building is older
- The postcode of the building
- A wide shot and a close-up of the area
To get a fixed quote, give us a call on 01277 525 020 or use the quote form. You can also send details through our quote form.
Questions we are asked in Locks Heath
Is Locks Heath too small for you to travel to?
Not at all: smaller places are covered as well as towns. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.
Can you seal penetrations in a hotel in Locks Heath after a refit?
Yes, where the specification calls for fire-rated sealant. Work is done room by room so the hotel keeps trading; design and sign-off stay with the designer and building control.
What do you charge?
We don’t publish prices, as every site differs. With photos or drawings, we can give you a fixed quote.
Do you offer coloured sealant?
That depends on the product specified. Some ranges are wide, others limited, so the available colours are confirmed with the quote.
What about RAMS and site documents?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
How do we ask for a quote?
It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.
Do you take on multi-site work?
Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.
Keeping the joints sound
Cleaning and maintenance staff play a part too. Pass these on to them:
- File the specified details where the next contractor can find them
- Flag new cables with no seal around them
- Don’t let anyone top up a fire seal with the wrong product
- Have penetrations checked while they can still be seen
After the work, brief anyone else working in the area that the openings are now sealed. If a seal has to be opened for a new service, it should be reinstated to the same detail, by someone who knows the system.
The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. That way the opening is sealed while the trade and access are still there instead of being left for someone else.