Fire-rated sealing and fire stopping in Dallington, East Sussex
Fire-rated and intumescent sealing of service penetrations and linear gaps in Dallington. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Hidden openings found during inspections
- Unsealed joints where partitions meet the slab
- Fire stopping installed outside its tested range
Fire stopping across Dallington
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
After the work
Regular inspection catches problems early. Specifically:
- Put resealing into every M&E and fit-out package
- Keep product data and details in the fire safety file
- Settle who seals which penetrations at the start of a project
- Check with the data sheet before painting over fire sealant
After every round of M&E works, check that the openings created have been sealed. Building it into each contractor’s sign-off keeps the walls intact.
Make reporting new openings part of every permit to work in service areas. It costs little and catches breaches early.
Fire stopping in Dallington
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. We install the specified fire-rated sealant to its tested detail, and our workmanship carries a 12-month guarantee. If you are dealing with fire sealant pulled out of the opening and penetration schedules that need working through, we can help, on joints between fire-resisting walls and floors, service gaps in risers and linear gaps at wall heads alike. Most enquiries from Dallington start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Smaller places such as Dallington still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. Any service penetration through those walls should be closed with the specified product, set out as its test evidence shows.
Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Location
- Dallington (TN21)
- Wider area
- East Sussex
- Guarantee
- 12 months on every job
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Site staff or a sealant specialist?
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Where services cross fire walls in Dallington
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. Our part stays the same: the specified product, installed to its tested detail. Dallington is about 43 miles from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls.
For a school such as Dallington Church of England Primary School, penetration sealing fits best at the end of the summer works. For a building such as The Parish Church of St Giles, new heating or data runs are the usual reason penetrations need sealing.
Dallington is about 7 miles north-east of Hailsham, in East Sussex. Any commercial site in Dallington is covered, whether it’s a single job or part of a planned programme. We work across 308 places in East Sussex, from busy centres to rural villages. We also cover Brighton, around 23 miles from Dallington.
We cover the TN21 postcode districts. Nearby places we also cover include Wood's Corner (1 mile east), Rushlake Green (2 miles west), Punnett's Town (2 miles north-west), Brownbread Street (3 miles south-east) and Burwash Common (3 miles north). Further afield, our area takes in Eastbourne (12 miles south), Hastings (10 miles south-east), Bexhill-on-Sea (8 miles south-east), Hailsham (7 miles south-west), Crowborough (11 miles north-west) and St Leonards (11 miles south-east).
Around Dallington
Well-known places in the area include Old Castle (less than half a mile west) and Hellingly Hospital (5.6 miles south-west).
Our process
Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then reopened once the sealant allows before we move to the next. For a building around Dallington, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.
- We read the specification, drawings or penetration schedule you send and raise any questions before we price.
- On site, each opening is checked against the tested detail it is meant to follow.
- Unsuitable fillers and loose debris are taken out of each opening.
- Mineral wool or other backing goes in wherever the detail asks.
- Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
Getting the site ready
- Send your site hours and access windows
- Let building users know which areas are affected
- Make sure the joints can be reached
Request a quote
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. For smaller jobs, photographs and a description will do.
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Your questions answered
Is Dallington off your patch?
Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Good photographs up front let us bring everything on the first visit.
What does the BS 476 change mean for fire-rated sealant in Dallington?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Can the building stay open while you work?
Usually, yes. Phased work can be planned so areas stay in use.
Are you insured?
Yes. Mastic Doctor is fully insured, public liability included.
Is your workmanship covered by a guarantee?
Yes. Workmanship is guaranteed for 12 months.
Will you just go over the old sealant?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
What’s the quickest route to a quote?
It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photographs and a postcode.
What we can’t put right
We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:
- Deciding what a wall or floor needs, which belongs to the designer
- Issuing fire ratings or certificates for seals
- Reviewing a building’s overall fire safety
If you are not sure, just call the office on 01277 525 020 or email us and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Linear gaps at wall heads
- Service gaps in risers
- Pipe penetrations
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
- Cable penetrations
When to call us in Dallington
A common fault is a product that was never fire-rated in the first place: expanding foam or a general-purpose sealant pushed into a gap to tidy it. The opening looks sealed but has no fire test evidence behind it, so it has to come out.
Look out for the following:
- Fire stopping installed outside its tested range
- Service penetrations left open after M&E works
- Snag lists that include open service penetrations
- Builders’ foam or ordinary silicone in compartment walls
At a healthcare site like Hellingly Hospital, 5.6 miles to the south-west of Dallington, new services through compartment walls are a constant, and each needs the specified seal.
Questions to ask before you book
- Do they follow the manufacturer’s priming guidance?
- Proof of insurance
- Is the sealant right for the movement and the substrate?
- Will CSCS-carded applicators be on site?
Towns and villages near Dallington
Other services in Dallington
Leave it or put it right?
An improvised seal can look finished while offering no tested performance. Correcting it means cutting it out and starting again with the specified product, and doing it once, properly, is cheaper. Older rural buildings around Dallington move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
The product called for affects the cost, and so does the preparation. Access, phasing and site rules also count.
Why appoint us
- Health and safety: CHAS accredited
- A Constructionline member, so easy to vet
- Workmanship guaranteed for 12 months
- Failed material removed, not covered up
Read our cost guide and our accreditations.