Fire-rated sealing and fire stopping in Westwood, Kent
Fire-rated and intumescent sealing of service penetrations and linear gaps in Westwood and across Kent. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Fire-rated sealant that has cracked or shrunk back
- Openings found when ceilings come down for a refit
- Service penetrations left open after M&E works
Need fire stopping in Westwood?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Fire stopping in Westwood, done properly
A lot of fire-stopping work comes after M&E installation, a refit or a tenant fit-out. Each new cable, pipe or data route cut through a fire-resisting wall leaves an opening behind, and they are easy to forget. We close the openings listed on your schedule, using the specified sealant and detail. Most enquiries involve seals disturbed by maintenance and left open and service penetrations left open after M&E works, on cable penetrations, joints between fire-resisting walls and floors and linear gaps at wall heads. One point of contact handles commercial sealant work in Westwood from the first photos to the final walk-round, whether it’s one building or several.
Rural conversions around Westwood can put new fire-resisting partitions inside older structures. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.
We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Where
- Westwood (DA13, DA2)
- Wider area
- Kent
- Guarantee
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
What sealant work can’t fix
Sealant solves a lot, but not everything, and we’re upfront when that’s the case. It won’t fix:
- Large openings beyond what any sealant detail covers
- Gaps in walls that were never built as compartment walls
- Fire doors, dampers or other fire safety equipment
If in doubt, give us a call on 01277 525 020 or send photos by email and we will say what we think.
Where we work in Westwood
- Service gaps in risers
- Small duct penetrations where the tested detail allows
- Pipe penetrations
- Linear gaps at wall heads
- Cable penetrations
- Joints between fire-resisting walls and floors
Different surfaces, different methods
Linear joints
Joints at the top of partitions may need to move as the slab above deflects. We use the product and backing the detail names for that movement, with no gaps along the run.
Small ducts
We seal around ducts only within what the tested detail covers. The ductwork, its supports and any dampers are for the ductwork contractor.
General trades versus a specialist
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
Common questions from Westwood clients
Is Westwood off your patch?
Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.
Can you work around term dates at a campus such as University of Greenwich?
Yes, holiday working periods are the norm on campus jobs. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
Is fire stopping in Scotland covered by different guidance?
Building standards in Scotland are separate from England’s, while England relies on Approved Document B. Wherever the site is, our work follows the specification and the tested detail.
Is any job too small?
Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.
Do you certify or sign off fire stopping?
No. We don’t certify or sign off fire stopping, and we hold no third-party fire-stopping installer certificate. Our part is fitting the specified product to its tested detail, and any records you need can be confirmed with the quote.
Are you fully insured?
Yes. Mastic Doctor is fully insured, public liability included.
How a job runs
On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, with the work itself usually taking longer where risers, ceiling voids or occupied floors have to be worked through in sequence. If others near Westwood need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.
- We read the specification, drawings or penetration schedule you send and ask about anything unclear.
- 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.
- We fit the backing the detail asks for, to the stated depth.
- We apply the specified sealant to the depth and around the services as the detail shows.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
Preparing the site
- Flag any permit to work we’ll need
- Tell us which areas need to stay in use
- Move anything stored against the joints
Get a fixed quote
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. For a chat about it beforehand, give us a call on 01277 525 020 or email the details over.
Related advice
What else we do in Westwood
What sets the cost
There’s no standard rate for sealant work, since sites vary so much. What we take into account:
- Access and working height
- The total length or number of joints
- Specialist products, such as fire-rated or hygienic sealants
- Induction, permit and paperwork requirements
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
Before you send an enquiry
It doesn’t need to be a full survey. These details are enough to start:
- Any dates the work must fit around
- The product your specification calls for
- Where the site is, with the postcode
- Whether the building will be occupied during the work
A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or ring 01277 525 020 or email us to discuss it first.
Commercial clients in Westwood
Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Westwood can form part of a wider programme across Kent.
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, with CSCS-carded applicators on site.
Fire stopping in Westwood: the local picture
Westwood lies roughly 18 miles out from central London. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. 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. We install whatever has been specified, to the product’s tested detail.
Office fit-outs on sites such as Fawkham Business Park (1 mile south of Westwood) add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it. Campus buildings at universities such as University of Greenwich (to the north-west of Westwood) see constant changes to data and services, and fire-rated sealant goes in around new penetrations where it is specified. In a building such as Church of Saint Mary Magdalene, any service penetration through a fire-resisting wall should be sealed to the specified detail.
Westwood is about 3 miles south of Swanscombe, in Kent. We cover commercial sites throughout Westwood, whether it’s a single job or part of a planned programme. Across Kent, 931 places are covered, including Westwood. There’s a separate page for London, roughly 18 miles from Westwood.
We take on service penetrations across the DA13 and DA2 postcode area, whatever the building. We cover commercial and managed buildings on Westwood Road and Highcross Road and the roads nearby. We also cover Grubb Street (1 mile south-west), Green Street Green (1 mile west), Bean (1 mile north-west), St Margarets (2 miles west) and Darenth (2 miles west). Nearby towns on our patch include Maidstone (14 miles south-east), Dartford (4 miles north-west), Sevenoaks (10 miles south-west), Gravesend (4 miles east), Tonbridge (15 miles south) and Northfleet (3 miles north-east).
Around Westwood
Around Westwood, our work takes us to commercial buildings near Longfield Academy, Longfield Chalk Bank and Railway Tavern, among other places. The nearest railway station is Longfield station, about 1 mile south. Well-known places in the area include Stone Museum of Geology (3.3 miles north-west) and Bluewater (2.3 miles north-west). Green spaces nearby include Sawyers Lake.