Fire-rated sealing and fire stopping in St Leonards, Hampshire
Commercial sealant work in St Leonards for contractors, FMs and building owners: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.
- Hidden openings found during inspections
- Fire-rated sealant that has cracked or shrunk back
- Non-fire-rated filler around services
Fire stopping for businesses in St Leonards
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Compartment walls and floors in St Leonards
There are several hotels within about 2 miles of St Leonards. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail. For England, the fire stopping of penetrations is dealt with in Approved Document B. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. We install whatever has been specified, to the product’s tested detail.
Industrial units on estates such as Ashley Heath Industrial Estate (1.4 miles north-west of St Leonards) often separate offices from warehouse space with fire-resisting walls, and new services through them need the specified seal. Older community buildings such as All Saints that have been rewired or given new heating can have service gaps through walls worth checking against the specification.
St Leonards is in Hampshire. Our applicators travel to St Leonards for work on service penetrations. We work across 723 places in Hampshire. Southampton is covered too, around 21 miles from St Leonards.
Business premises anywhere in BH24 are within our area. If your site is on Cedar Avenue, Birch Close and Malmesbury Road or close by, we can quote for service penetrations. Sites close to St Leonards are covered too, including Ashley Heath (1 mile north), St Ives (1 mile north-east), Matchams (1 mile south-east) and Avon Castle (2 miles east). A short drive away, we cover Lymington (14 miles east), New Milton (10 miles south-east), Ringwood (3 miles north-east), Barton on Sea (10 miles south-east), Ashley (10 miles south-east) and Milford on Sea (13 miles south-east).
Near you in St Leonards
Around St Leonards, our work takes us to commercial buildings near Avon Heath Country Park and the streets around them. Well-known places in the area include St Leonard's Hospital (0.9 miles south-west) and Stapehill Abbey (3.9 miles south-west). Green spaces nearby include Linbrook Lake and Blashford Lakes.
About our fire stopping in St Leonards
Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We hold no third-party fire-stopping installer certificate. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. We work on pipe penetrations, service gaps in risers and small duct penetrations where the tested detail allows, and the usual reasons a site gets in touch are penetration schedules that need working through and seals that don’t match their tested detail. Looking for mastic applicators who cover St Leonards? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
In places the size of St Leonards, fire-resisting walls and floors are found in schools, care homes, health centres and mixed-use buildings. Specified fire-rated sealant goes around new services there, built to match the manufacturer’s detail.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Where
- St Leonards (BH24)
- Region
- Hampshire
- Cover
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Also near St Leonards
More services for St Leonards
Your questions answered
Can you work at a site such as Ashley Heath Industrial Estate, by St Leonards?
Yes. Estates, retail parks and business parks around St Leonards, Ashley Heath Industrial Estate among them, are all within reach. Photos and a short description are enough for a first look.
What does the BS 476 change mean for fire-rated sealant in St Leonards?
References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.
Do you need to see the site first?
Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we will arrange a visit before quoting.
Is any job too small?
We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.
Do you hold CHAS accreditation?
Yes. We’re CHAS accredited and a Constructionline member, which helps with supplier vetting.
How do we ask for a quote?
You can use the quote form on this site; alternatively, ring 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.
Is St Leonards in your area?
Yes. We cover St Leonards, and the simplest way to start is to phone 01277 525 020 or send photos by email.
Surface by surface
Metal pipes
Metal pipes conduct heat, so their details often call for extra measures along the pipe, and some details add wrapping or a set length of insulation. We follow whatever the detail requires and flag anything we can’t match.
Masonry and concrete
Core-drilled holes are neat; broken-out ones rarely are. The gap is measured at the widest point so we know it sits within the tested range, and any outside it are raised with you.
Quoting for work in St Leonards
The price varies from site to site. It mainly depends on:
- Phasing around occupants
- Any access equipment needed
- Backing rod, priming and other preparation
- Location, for remote and island sites
Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.
Sending details for a quote
It doesn’t need to be a full survey. A few details are enough to get going:
- Rough lengths or quantities, or drawings if you have them
- Photos of the joints, close up and from further back
- The type of building and who uses it
- The asbestos register, for older buildings
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to call 01277 525 020 or email the details over.
Diagnose, treat, sign off
Occupied buildings need a little choreography. We sign and contain the area we’re in, keep walkways clear and work section by section so the rest of the building stays in use. Several jobs near St Leonards can be grouped on one trip. Mention the building’s opening times and we will work within them.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- We compare every service penetration with its tested detail before sealing.
- 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
- Flag any permit to work we will need
- Share your working hours and any access restrictions
- Confirm the product named in the specification
Request a quote
Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.
Related advice
Common problems we fix in St Leonards
Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Deflection and building movement can open these gaps, and a product not tested for that movement may crack. The tested detail for a linear joint states the width and movement it covers.
Common reasons buildings call us in:
- Unsealed penetrations discovered above suspended ceilings
- Unsealed joints where partitions meet the slab
- Non-fire-rated filler around services
- Fire-rated sealant that has cracked or shrunk back
For a hotel such as St Leonards Hotel, less than half a mile east of St Leonards, penetration seals are worth checking after any refit or services upgrade.
Questions to ask before you book
- Which product they’ll use, and why it suits the joint
- What site paperwork they can supply
- Will CSCS-carded applicators be on site?
- How the existing material will be dealt with
Work for main contractors and building owners
We work for building owners and managing agents on everything from one building to a spread of sites around St Leonards. Several sites can go on one quote, which keeps the paperwork simple.
Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
Why deal with it now?
Leave a penetration open and smoke and fire can cross into the next compartment far earlier than intended. While the openings can be reached, sealing them is normally straightforward. Wait until ceilings close or areas are occupied and the same work becomes harder to reach. Over time, UV, weather and movement wear any sealant out. Renewing it in good time keeps the building weathertight.
Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.
Why appoint us
- Constructionline member
- One number for every site we cover
- Sealing commercial buildings since 2005
- CSCS-carded applicators
Take a look at our cost guide or our accreditations.