The Platt fire stopping
We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in The Platt and the surrounding area. Send details for a fixed quote.
- Seals disturbed by maintenance and left open
- Unsealed joints where partitions meet the slab
- Seals that don’t match their tested detail
Need fire stopping in The Platt?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
About our fire stopping in The Platt
Most of our fire stopping work happens after the building is up. Each new cable, pipe or data route cut through a fire-resisting wall leaves an opening behind, often unnoticed. Those on your schedule are closed with the specified product. If you are dealing with fire-stopping items raised at inspection or handover and fire-rated sealant that has cracked or shrunk back, we can put it right, on linear gaps at wall heads, cable penetrations and service gaps in risers alike. Facilities teams, main contractors and managing agents in The Platt tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.
A job near The Platt is usually planned around one visit, with the specification and photos sent in advance. Design and sign-off belong to the designer or building control; we install what’s specified.
Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.
- Where
- The Platt (TN3)
- Wider area
- East Sussex
- Guarantee
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Why it’s worth doing now in The Platt
An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. While the openings can be reached, sealing them is normally straightforward. Left until ceilings are closed or a tenant moves in, the same work costs more access and more disruption. Converted and older buildings near places like The Platt tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.
A quote for service penetrations depends on quantities, condition and access. Ask us for a fixed quote.
Why appoint us
- A Constructionline member, so easy to vet
- Fully insured, including public liability cover
- One contact handling all your sites
- Failed material removed, not covered up
Your questions answered
Is The Platt too far out for you?
No. Small places get the same service as large ones. We work across Greater London and the South East. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
What does the BS 476 change mean for fire-rated sealant in The Platt?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
Can the building stay open while you work?
Typically, yes. We phase the work so most of the building stays in use.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
Is any job too small?
Small jobs are welcome alongside larger packages. Photos and a description are enough to start.
Is colour matching possible?
Often, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We confirm what’s available for the specified product when we quote.
Can weather delay the job?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
For managing agents and facilities managers
FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.
Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so the building keeps working while we do.
Towns and villages near The Platt
Also in The Platt
Cost factors for service penetrations
What shapes the price:
- How accessible the joints are
- Distance, for remote addresses
- Backing rod, priming and other preparation
- Which sealant the job calls for
The product called for affects the cost, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Before you send an enquiry
A few photos plus some basic facts will normally do. Please tell us:
- The postcode of the building
- Any specification or named product
- Drawings or a marked-up plan, if available
- Whether the building will be occupied during the work
For a fixed quote, call the office on 01277 525 020 or use the quote form. Our quote form is another easy route.
Fire-rated sealing for The Platt buildings
At about 33 miles from central London, The Platt is within reach of the capital. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls; the gaps need the specified seal. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. Either way, we install the specified product to its tested detail.
Industrial units on estates such as Durgates Industrial Estate (to the south-east of The Platt) often separate offices from warehouse space with fire-resisting walls, and new services through them need the specified seal. Hotels like The Abergavenny Arms Hotel, 0.9 miles north of The Platt, are refurbished in phases, and each phase can open up compartment walls.
The Platt is about 4 miles south of Royal Tunbridge Wells, in East Sussex. Businesses, contractors and managing agents in The Platt use us for work on service penetrations, as part of our coverage of East Sussex. The Platt is one of 308 places we cover in East Sussex. Sites around Brighton have their own page, about 25 miles away.
We take on service penetrations across the TN3 postcode area, for business premises of every kind. If your building is just outside The Platt, we cover Frant (1 mile north), Mark Cross (2 miles south), Eridge Green (2 miles north-west), Town Row (3 miles south-west) and Tidebrook (3 miles south). Further afield, our area takes in Hailsham (15 miles south), Crowborough (5 miles south-west), Uckfield (11 miles south-west), Heathfield (8 miles south), Upper Horsebridge (14 miles south) and Hellingly (14 miles south).
Landmarks near The Platt
Around The Platt, our work takes us to commercial buildings near The George Public House and Eridge Park and the streets around them. The nearest railway station is Frant station, roughly 1.7 miles north-east of the centre. Other landmarks nearby include The Corn Exchange (2.9 miles north) and The Amelia (3.4 miles north). Open spaces near The Platt include Broadwater Warren RSPB Reserve.
What we’re called out for in The Platt
Openings in fire-resisting walls typically appear when services are added or changed. A new cable pulled by an electrician, a pipe rerouted by a plumber or a data run drilled through a riser can leave the hole behind. Across several fit-outs, the openings add up.
These are often picked up first by site or facilities staff:
- Fire stopping installed outside its tested range
- Builders’ foam or ordinary silicone in compartment walls
- Old intumescent sealant that has split away
- Damaged fire seals in risers and voids
In a building such as The Parish Church of St Alban, any service penetration through a fire-resisting wall should be sealed to the specified detail.
What your quote should include
- Their pre-qualification and accreditations
- How they’ll work around occupants
- Will RAMS and insurance details be available?
- Which product they’ll use, and why it suits the joint
Surface by surface
Metal pipes
Heat travels along metal pipework. We follow whatever the detail requires and flag anything we can’t match.
Small ducts
Ducts are only sealed with sealant where the detail allows it. Dampers and ductwork systems themselves are outside our work.
From enquiry to sign-off
We schedule the visit to fit the site hours and access windows you give us. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. For work around The Platt, we aim to finish in one visit, so we ask for photos and rough sizes first. Then the right materials arrive with us.
- The specification and schedule come first, so we know which details apply.
- 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.
- Foam, ordinary sealant and debris come out so the seal starts clean.
- Backing and fire-rated sealant are installed to the detail and tooled.
- We tell you about openings that need a different product.
Before we start on site
- Share the asbestos register for older buildings
- Tell staff and tenants when we’ll be in
- Tell us your opening times and when work is allowed
Getting a fixed quote
Let us know the site, the scope and your timescale, and we will put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or send details through our quote form.