Fire-rated sealing and fire stopping in Platt, Kent
Work needed on a service penetration in Platt? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Fire-rated sealant that has cracked or shrunk back
- Damaged fire seals in risers and voids
- Penetration schedules that need working through
Fire stopping for Platt sites
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Fire stopping in Platt
Where pipes, cables and other services cross a compartment wall or floor, the opening around them has to be closed so fire and smoke can’t move between compartments. Our part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. We work to the product’s tested detail for every seal rather than guesswork. If you have unsealed penetrations discovered above suspended ceilings and unsealed joints where partitions meet the slab, we can help, whatever the surface. Searching for sealant specialists in Platt? We have been sealing commercial buildings since 2005.
Smaller places such as Platt still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.
Every job is signed off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.
- Location
- Platt (TN15)
- Region
- Kent
- Cover
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Fire-rated sealing for Platt buildings
For England, the fire stopping of penetrations is dealt with in Approved Document B. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. What we install is set by the specification, and it goes in to the tested detail. Platt is about 23 miles from central London. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls; the gaps need the specified seal.
Halls and meeting rooms at places like Church of St Mary sometimes gain new services, and any compartment wall crossed needs the specified seal. Office fit-outs on sites such as Bourne Enterprise Centre (0.8 miles west of Platt) add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it.
Platt is about 6 miles east of Sevenoaks, in Kent. Commercial clients in Platt use us for work on service penetrations. Platt is one of 931 places we cover in Kent for service penetrations. We also cover London, some 23 miles away.
We take on service penetrations across the TN15 postcode area. For a building on St Mary's Close, Grange Road and Platt Common or nearby, we can quote for service penetrations. Close to Platt, our area also takes in Comp (1 mile south-east), Borough Green (1 mile west), Crouch (1 mile south-west), Wrotham Heath (1 mile north-east) and Basted (1 mile south-west). A short drive away, we cover Maidstone (9 miles east), Dartford (12 miles north-west), Sevenoaks (6 miles west), Royal Tunbridge Wells (11 miles south), Gravesend (10 miles north) and Tonbridge (7 miles south).
Near you in Platt
In Platt, that means premises near Wrotham School, The Blue Anchor pub and Wrotham School, among other places. For rail, the closest station is Borough Green & Wrotham station, roughly 0.9 miles west of the centre. Well-known places in the area include Ightham Court (1.8 miles west) and Beechin Wood Archery Museum (less than half a mile south-east).
How the quote is worked out
To price the job, we consider:
- Specialist products, such as fire-rated or hygienic sealants
- Any access equipment needed
- Induction, permit and paperwork requirements
- Removal of failed or old sealant
Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.
Before you send an enquiry
Whether it’s one area or a whole building, the same details help:
- Specification clauses that apply
- What the building is and how it’s used
- Photos of the joints, close up and from further back
- Drawings or a marked-up plan, if available
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to give us a call on 01277 525 020 or send photos by email.
Owners, agents and contractors
For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.
FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.
Common problems we fix in Platt
Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Movement in the frame or slab can open the joint, and the wrong product can split as a result. Linear joint details set a width range and movement capability, and the seal has to sit within them.
Clients usually get in touch after noticing something like this:
- Head-of-wall gaps with no fire seal
- Expanding foam used as fire stopping
- Fire sealant pulled out of the opening
- Openings found when ceilings come down for a refit
In a school such as Platt Church of England Voluntary Aided Primary School, fire-rated sealant goes in around service penetrations where it is specified.
What to look for in a quote
- What site paperwork they can supply
- Will CSCS-carded applicators be on site?
- What the guarantee covers, and for how long
- How the existing material will be dealt with
How a job runs
Working in a building that stays open takes some planning. The work area is signed and kept contained, with routes through the building left open and move on in phases so staff and visitors can carry on around us. For work around Platt, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- First we go through the drawings, schedule or specification for the seals and ask about anything unclear.
- Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
- Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
- We fit the backing the detail asks for, to the stated depth.
- Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
- If an opening needs something other than sealant, we tell you instead of improvising.
Preparing the site
- Send your site hours and access windows
- Warn occupants and staff about the work
- Send any specification or drawings in advance
Getting a fixed quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.
Related advice
Surface by surface
Metal pipes
Sealant details often cover copper and steel pipework. The tested detail sets the pipe size range, gap, depth and whether insulation can stay on, so we check each one.
Risers and ceiling voids
Openings above suspended ceilings are easy to miss. We follow your schedule area by area and tell you about openings outside the list.
Maintenance after handover
Every sealant joint needs some looking after, and how long they last depends on how they’re treated. Our advice:
- Brief every trade that openings they make must be sealed
- Get seals inspected before ceilings and boxing close
- Keep general-purpose fillers away from compartment walls
- Keep product data and details in the fire safety file
Give the sealant its full cure time before ceilings, boxing or decoration go over it. Some fire-rated sealants accept paint and some don’t, and the data sheet says which.
Make reporting new openings part of every permit to work in service areas. It costs little and catches breaches early.
Questions about Platt
Is Platt 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. Where we can, we group nearby jobs to make the most of each trip.
Can you work on a hospital site such as Sevenoaks Hospital?
Yes. We work in healthcare settings as well as offices and schools. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
How many days will you need on site?
It depends on the scope, but the work usually takes a single visit for a short list of penetrations, or a phased programme for a whole building. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
Are you members of a third-party fire-stopping installer scheme?
No, and we won’t imply otherwise. Third-party schemes aren’t a legal requirement, but many clients and main contractors ask for them. Where it isn’t required, we install the specified sealant to the maker’s details.
Do you take on small jobs?
We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.
Which standards are fire seals tested to?
Penetration seals are tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4. Results are classified under BS EN 13501-2. That rating only holds when the product is installed to its tested detail.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.