Fire-rated sealing and fire stopping in Cheriton, Hampshire
Fire-rated and intumescent sealing of service penetrations and linear gaps across Cheriton, by CSCS-carded applicators. CHAS accredited and fully insured.
- Unsealed openings around new pipes and cables
- Penetration schedules that need working through
- Seals disturbed by maintenance and left open
Need fire stopping in Cheriton?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
About our fire stopping in Cheriton
Opened ceilings and riser doors often reveal service openings nobody sealed. Where the walls and floors already have a fire-stopping specification, we can work to it, matching the product and detail it names. Where there isn’t one, the designer or fire engineer needs to set one first. Most enquiries involve non-fire-rated filler around services and penetration schedules that need working through, on joints between fire-resisting walls and floors, cable penetrations and linear gaps at wall heads. A single leaking joint is often how a building in Cheriton first comes to us: we look at the rest while we’re there and tell you what we find.
A job near Cheriton 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.
We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.
- Place
- Cheriton (SO24)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
When something else is needed
Being straight saves everyone time. Fresh joints won’t solve:
- Plastic pipes whose detail calls for a collar or wrap
- Fire risk assessments, a job for a competent assessor
- Gaps in walls that were never built as compartment walls
If in doubt, phone 01277 525 020 or send photos by email and we’ll say what we think before you book.
Joints and surfaces we work on
- Cable penetrations
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Pipe penetrations
- Linear gaps at wall heads
From enquiry to sign-off
We follow your site rules from the start: signing in, inductions and any permit to work. Once we’re cleared to begin, we take the joints in the sequence agreed with you. For work around Cheriton, we aim to finish in one visit, so we ask for photos and rough sizes first. That way the right products come on the day.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- Each opening is checked for wall or floor type, service, gap and depth.
- Unsuitable material is removed and the opening cleaned first.
- The specified backing and sealant go in to depth and are finished neatly.
- We tell you about openings that need a different product.
Getting the site ready
- Agree which areas must stay open
- Move anything stored against the joints
- Explain the parking and delivery arrangements
Request a quote
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.
Advice
What sets the cost
Sealant work doesn’t have a standard rate, because every site is different. What we take into account:
- Access and working height
- The total length or number of joints
- Distance, for remote addresses
- Whether old sealant has to be cut out first
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.
Sending details for a 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
- A wide shot and a close-up of the area
- Where the site is, with the postcode
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, phone 01277 525 020 or use the quote form.
Compartments and services around Cheriton
Central London is about 56 miles from Cheriton. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls. 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. We install whatever has been specified, to the product’s tested detail.
Halls and meeting rooms at places like Church of St Michael sometimes gain new services, and any compartment wall crossed needs the specified seal. Schools such as Cheriton Primary School often have new data and services installed during holidays, and penetrations through fire-resisting walls should be checked afterwards.
Cheriton is about 7 miles east of Winchester, in Hampshire. Businesses, contractors and managing agents in Cheriton can call on us for service penetrations, as part of our coverage of Hampshire. Our Hampshire coverage takes in 723 places, from busy centres to rural villages. For work in that direction, see our Southampton page (14 miles or so).
We cover the SO24 postcode districts. Among the streets we cover are Lower Lamborough Lane, Raebarn Close and Markall Close, and sites on any of them can send details for a fixed quote. If your building is just outside Cheriton, we cover Hinton Ampner (1 mile east), Beauworth (2 miles south-west), Bramdean (2 miles east), New Alresford (2 miles north) and Bishop's Sutton (3 miles north-east). Further afield, our area takes in Basingstoke (15 miles north), Winchester (7 miles west), Havant (15 miles south-east), Eastleigh (10 miles south-west), Fareham (14 miles south) and Horndean (12 miles south-east).
What’s near Cheriton
Around Cheriton, our work takes us to commercial buildings near The Flowerpots Inn and the streets around them. For a walk, there’s Beacon Hill and Shutts Copse.
Why deal with it now?
The longer openings stay, the more there tend to be: each new service adds to the list. A schedule that is dealt with regularly stays manageable and avoids a much larger catch-up later. Older rural buildings around Cheriton move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
Pricing service penetrations depends on quantities, condition and access. Call for a quote.
Why clients in Cheriton choose us
- Fully insured, including public liability cover
- Constructionline member
- A fixed quote before work starts
- Workmanship guaranteed for 12 months
Take a look at what affects the cost or how we’re accredited.
Nearby places to Cheriton
Also in Cheriton
Site staff or a sealant specialist?
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.
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Questions we are asked in Cheriton
What does the BS 476 change mean for fire-rated sealant in Cheriton?
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.
Is Cheriton too far out for you?
Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Can you work while the building is occupied?
In most cases, yes. Phased work can be planned so areas stay in use, with each area protected and signed.
Will you quote for a small job?
Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.
Are you insured?
Yes. Mastic Doctor is fully insured, public liability included.
Can one quote cover more than one building?
Yes. A group of buildings can go on one quote, and you deal with one contact throughout across South East England, Greater London and Scotland.
What do you charge?
Each job is quoted on its own details. For yours, ring 01277 525 020 or email the details over with a description of the work.
Surface by surface
Masonry and concrete
Many seals are made in blockwork, brickwork or concrete slabs. Dust and debris are cleared from the opening, so the sealant and any backing sit properly.
Risers and ceiling voids
Service risers and the voids above ceilings are where openings collect. Access is often tight, so we agree it with you in advance.