Blackboys fire stopping
Fire-rated and intumescent sealing of service penetrations and linear gaps across Blackboys, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Damaged fire seals in risers and voids
- Unsealed penetrations discovered above suspended ceilings
- Fire-stopping items raised at inspection or handover
Fire stopping for businesses in Blackboys
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Common questions from Blackboys clients
Is Blackboys too far out for you?
No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.
How does the move away from BS 476 affect penetration seals in Blackboys?
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. Our part doesn’t change: the specified product, to its tested detail.
Will you just go over the old sealant?
No, never. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
When can you be on site?
We’re in the office from 8am until 5pm, Monday to Friday. Let us know your site hours and access windows, and the work will be planned around them.
Are you fully insured?
Yes. We’re fully insured, and the certificate can go with your quote.
How long do sealant joints last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
Will you come and look before quoting?
Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we will arrange a visit.
About our fire stopping in Blackboys
Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4, with results classified under BS EN 13501-2. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. Reproducing the tested arrangement on site is the part we take care of. If you have fire-stopping items raised at inspection or handover and unsealed penetrations discovered above suspended ceilings, we can put it right. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Blackboys it comes down to the same thing: the right product in a properly prepared joint.
Around smaller places like Blackboys, penetration seals come up in schools, halls, pubs with rooms, care homes and farm buildings used as offices. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.
We stand by our work: 12 months, guaranteed. That covers our preparation and application, and we come back if anything isn’t right.
- Place
- Blackboys (TN22)
- Wider area
- East Sussex
- Guarantee
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
How the quote is worked out
We price every job individually. The things that drive the figure:
- Location, for remote and island sites
- Which sealant the job calls for
- Access and working height
- The site’s rules and procedures
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.
Before you send an enquiry
However big the job, the same details help:
- The product your specification calls for
- What the building is and how it’s used
- Approximate linear metres or a joint schedule
- Access details, including height
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
Why deal with it now?
Fire stopping is a regular point raised at inspections and handover. Late discoveries can delay handover while openings are reopened and resealed, so earlier action pays back. Halls, stores and units around places like Blackboys may not be checked every day, which gives a failed joint time to do damage. Resealing early avoids that.
A quote for service penetrations depends on quantities, condition and access. Call for a quote.
Why choose Mastic Doctor in Blackboys
- 12 months’ guarantee on every job
- CHAS accredited contractor
- Work to your specification and the manufacturer’s guidance
- Clear, fixed quotes
Read our cost guide or how we’re accredited.
Honest limits
A few problems need another trade or a different fix, and we point that out rather than sealing over them:
- Designing or specifying fire stopping, which sits with the designer or fire engineer
- Large openings beyond what any sealant detail covers
- Reviewing a building’s overall fire safety
Not sure which it is? You can give us a call on 01277 525 020 or email drawings and photos and we’ll tell you honestly before you book.
What we seal
- Service gaps in risers
- Cable penetrations
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
- Pipe penetrations
- Linear gaps at wall heads
Penetration seals near Blackboys
Blackboys lies roughly 39 miles out from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls, and the gaps need sealing with the specified product. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. 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. What we install is set by the specification, and it goes in to the tested detail.
Office fit-outs on sites such as Tylers Business Park (to the south-east of Blackboys) add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it. Schools such as Blackboys Church of England Primary School often have new data and services installed during holidays, and penetrations through fire-resisting walls should be checked afterwards. Hospital estates such as Uckfield Community Hospital (to the west of Blackboys) are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail.
Blackboys is about 3 miles east of Uckfield, in East Sussex. Commercial clients in Blackboys can call on us for service penetrations. 308 places across East Sussex fall within our area, Blackboys among them. Our Brighton page has more on work in that area, about 16 miles away.
Postcode districts covered here: TN22. Buildings on High Street, Mount Pleasant and Gun Road are within our area for service penetrations. With the B2102 nearby, Blackboys is straightforward for us to reach. We also cover Etchingwood (1 mile north-west), Framfield (1 mile west), Potter's Green (2 miles north-west), Buxted (2 miles north-west) and Hadlow Down (2 miles north). Bigger towns within reach include Eastbourne (13 miles south-east), Bexhill-on-Sea (15 miles south-east), Seaford (13 miles south), Lewes (9 miles south-west), Hailsham (8 miles south-east) and Crowborough (6 miles north).
What’s near Blackboys
Locally, jobs take us to sites close to Blackboys Inn and Passingworth Park, among other places. The closest station to Blackboys is Buxted station, about 2.3 miles north-west of the centre. Other landmarks nearby include Uckfield Community Hospital (2.6 miles west) and Sussex Farm Museum (3.9 miles south-east). Not far away are Selwyns Wood.
Doing it in-house
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.
How the job changes by surface
Masonry and concrete
Openings through concrete vary from tidy cores to rough break-outs. Each gap is measured where it is widest so we know it sits within the tested range, and any outside it are raised with you.
Cables and cable bundles
Single cables and small bundles are often within a fire-rated sealant’s tested detail. The detail limits bundle size and the gaps between and around cables.
Also near Blackboys
More services for Blackboys
How a job runs
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, the manufacturer’s primer is applied where it’s called for, and each bead is tooled to a neat concave finish. If others near Blackboys need work, visits can be combined, which keeps travel down. You will have a fixed quote before work starts.
- We start with your penetration schedule, drawings or specification.
- We plan the sequence of floors, risers and voids with you.
- We compare every service penetration with its tested detail before sealing.
- Unsuitable material is removed and the opening cleaned first.
- Backing and fire-rated sealant are installed to the detail and tooled.
- We tell you about openings that need a different product.
Preparing the site
- Share the asbestos register for older buildings
- Tell staff and tenants when we’ll be in
- Agree which areas must stay open
Request a quote
Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. If you have questions first, give us a call on 01277 525 020 or email the details over.