Fire Stopping in Duncton
Fire stopping in Duncton, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Unsealed openings around new pipes and cables
- Fire seals cut back for extra cables and never reinstated
- Unsealed penetrations discovered above suspended ceilings
Fire stopping in Duncton
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
On site: what to expect
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked. Where the sealant needs time to cure before use, we tell you and sign the area. If others near Duncton need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.
- 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.
- The specified backing and sealant go in to depth and are finished neatly.
- We tell you about openings that need a different product.
Preparing the site
- Tell us your opening times and when work is allowed
- Point out any areas we must not close
- Flag any permit to work we will need
Ask for a quote
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.
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Fire stopping for commercial buildings in Duncton
It helps to set out our role at the start. Deciding the specification sits with the designer, the fire engineer and building control. What we bring is careful installation of the specified sealant, to the maker’s guidance in Duncton and nearby. If you have open linear gaps along the top of fire-resisting walls and fire-stopping items raised at inspection or handover, we can put it right. Searching for sealant specialists in Duncton? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
Barn and farm-building conversions near places like Duncton often combine new partitions with old walls. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.
We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.
- Where
- Duncton (GU28)
- Region
- West Sussex
- Guarantee
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
What sealant work can’t fix
Being straight saves everyone time. Fresh joints won’t solve:
- Openings that need collars, wraps, batts or boards rather than sealant
- Designing or specifying fire stopping, which sits with the designer or fire engineer
- Fire risk assessments, a job for a competent assessor
Not sure which it is? You can call 01277 525 020 or email a schedule or drawings and we will tell you honestly before you book.
Where we work in Duncton
- Service gaps in risers
- Linear gaps at wall heads
- Pipe penetrations
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
- Cable penetrations
Fire-rated sealing for Duncton buildings
Fire stopping of openings and penetrations in England falls under Approved Document B. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail. Central London is about 45 miles from Duncton. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls, and the gaps need sealing with the specified product.
Large healthcare estates like Midhurst Community Hospital, 5.4 miles to the north-west of Duncton, change their services often, so penetration seals are worth checking after M&E work. Holiday works at schools like Duncton CofE Junior School often leave service openings to seal before pupils return. Older community buildings such as Church of Holy Trinity that have been rewired or given new heating can have service gaps through walls worth checking against the specification.
Duncton is about 10 miles north-east of Chichester, in West Sussex. We cover commercial sites throughout Duncton, for single jobs and planned programmes alike. Duncton is one of 373 places we cover in West Sussex for service penetrations. Sites around Portsmouth have their own page, roughly 22 miles from Duncton.
Anyone looking for fire stopping in GU28 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Duncton High Street and Willett Close, and sites on any of them can send details for a fixed quote. If your building is just outside Duncton, we cover East Lavington (1 mile south-west), Sutton (2 miles south-east), Rotherbridge (2 miles north), Graffham (2 miles west) and Haslingbourne (2 miles north-east). Bigger towns within reach include Worthing (13 miles south-east), Bognor Regis (11 miles south), Chichester (10 miles south-west), Littlehampton (10 miles south-east), Rustington (11 miles south-east) and Storrington (8 miles east).
Landmarks near Duncton
We work on buildings around The Parish Church of St Peter. Well-known places in the area include Midhurst Community Hospital (5.4 miles north-west) and Coultershaw Heritage Site (1.6 miles north-east). Not far away are Bignor Hill and Graffham Common.
What the job involves on each surface
Drylining partitions
Holes in board are often cut larger than needed. If the gap exceeds the tested range, sealant alone won’t do, and the detail may call for board patching or another product.
Linear joints
Linear joints run along the head of a wall, at a slab edge or between two fire-resisting elements. BS EN 1366-4 testing sets the joint widths, depths, backing and movement a seal covers, and we work within it.
Duncton: questions and answers
How does the move away from BS 476 affect penetration seals in Duncton?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Is a smaller place like Duncton outside your area?
No. Places such as Duncton are covered as much as the big towns. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.
What will the job cost?
There isn’t a price list, because every site is different. With photographs or drawings, we can give you a fixed quote.
Do you guarantee your work?
Yes, for 12 months. If our installation fails in that time, we return and fix it.
Are you CHAS accredited and on Constructionline?
Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.
How long before the joints can be used?
The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.
Do you have public liability insurance?
Yes. We’re fully insured, and the certificate can go with your quote.
Nearby places to Duncton
More services for Duncton
Building owners, agents and FMs in Duncton
Building owners and managing agents use us on everything from one building to a spread of sites around Duncton. Several sites can go on one quote, so there’s one set of paperwork to deal with.
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.
What affects the price in Duncton
To price the job, we consider:
- Whether the work must be split into stages
- Access and working height
- How much existing material needs removing
- Backing rod, priming and other preparation
What a job costs comes down to how many linear metres there are, what has to come out first and the access. Call for a quote when you are ready.
What we need to price the job
The more we know, the firmer the quote. When you get in touch, include:
- When you need the work done
- Photos of the joints, close up and from further back
- The postcode of the building
- Drawings or a marked-up plan, if available
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, ring 01277 525 020 or email a schedule or drawings.
Keeping the joints sound
Problems stay small when the joints are checked regularly. Specifically:
- Don’t let anyone top up a fire seal with the wrong product
- Check risers and ceiling voids after each round of works
- Make fire stopping part of every scope that crosses a fire-resisting wall
- Flag new cables with no seal around them
After the work, brief anyone else working in the area that the openings are now sealed. Any seal cut back for a new service needs reinstating to its tested detail.
Write fire stopping into the scope of any work crossing a compartment wall or floor. That way the opening is sealed while the trade and access are still there instead of being left for someone else.