Northfleet fire stopping
Need fire stopping in Northfleet? It’s simple: send details, get a quote, we seal, guaranteed.
- Openings found when ceilings come down for a refit
- Seals that don’t match their tested detail
- Service penetrations left open after M&E works
Fire stopping across Northfleet
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Fire stopping in Northfleet
A fire-rated sealant is only one part of a tested system: its test evidence covers one product in one kind of wall or floor, with set services, gaps, depths and backing. Before we seal anything, we check the opening against the detail it is meant to follow, and we say so if it doesn’t fit. Most enquiries involve expanding foam used as fire stopping and fire sealant pulled out of the opening, on small duct penetrations where the tested detail allows, service gaps in risers and cable penetrations. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Northfleet is the same: the right product in a properly prepared joint.
Towns the size of Northfleet have plenty of buildings with compartment walls: schools, care homes, surgeries, offices and blocks of flats. New cabling or pipework through a fire-resisting wall leaves a gap that has to be made good with the specified product.
Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.
- Location
- Northfleet (DA11)
- Wider area
- Kent
- Cover
- A 12-month guarantee
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Fire stopping in Northfleet: the local picture
Several hotels sit less than 2 miles from Northfleet. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail. 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.
Theatres, wards and plant rooms at sites like Gravesham Community Hospital, 1.1 miles north-east of Northfleet, all have compartment walls crossed by services. Residences at universities like University of Greenwich, 3.5 miles west of Northfleet, have compartment walls that must be resealed whenever services change.
Northfleet is about 5 miles east of Dartford, in Kent. Northfleet sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. Northfleet is one of 931 places we cover in Kent for service penetrations. Our London page has more on work in that area, about 20 miles away.
Commercial sites across DA11 are covered. For a building on Lawrance Square, London Road and Marks Square or nearby, send details and we will quote for service penetrations. Access to Northfleet is via the A2 and A226, so getting applicators and materials to site is simple. Just outside Northfleet, we also work in Painters Ash (1 mile south-west), Springhead (1 mile west), Windmill Hill (1 mile east), Northfleet Green (1 mile south) and Gravesend (1 mile east). Nearby towns on our patch include Maidstone (14 miles south-east), Dartford (5 miles west), Sevenoaks (13 miles south-west), Swanley (8 miles west), Kings Hill (11 miles south) and Foley Park (13 miles south-east).
What’s near Northfleet
In Northfleet, that means premises near The Six Bells pub, Saint George's Church of England School and Copperfield Academy, among other places. Northfleet’s nearest station is Gravesend station, about 1 mile north-east. Other landmarks nearby include Bluewater (3.3 miles west) and Stone Castle (3.1 miles west). Not far away are Chafford Gorges Nature Park and Sawyers Lake.
Leave it or put it right?
Open penetrations multiply: each new service adds to the list. A schedule that is dealt with regularly stays manageable. A failed joint is easier to put right before damp shows inside. Once water gets in, there’s drying out and making good as well.
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
Why choose Mastic Doctor in Northfleet
- Old sealant cut out, never sealed over
- Our applicators hold CSCS cards
- Workmanship guaranteed for 12 months
- Health and safety: CHAS accredited
See what affects the cost and our accreditations.
FAQs: Northfleet
Do you work on fire-rated sealing in hotels in Northfleet?
Yes, to the specification and the product’s tested detail. Each seal follows the tested detail, and rooms are done in turn.
Can you take on a job at a hospital such as Gravesham Community Hospital?
Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Who decides which product is used?
A specification, where there is one, decides it. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Can you quote from photographs?
Many jobs can be quoted from photographs, drawings or a joint schedule. Where they aren’t, we arrange a site visit before quoting.
How long do sealant joints last?
Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
How long does a typical visit take?
We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.
Are you CHAS accredited?
Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.
Keeping the joints sound
For the best life from the joints:
- Leave fire sealant to cure fully before covering it
- Don’t let anyone top up a fire seal with the wrong product
- Treat an open penetration as a priority repair
- Agree the fire-stopping specification before services go in
Store the specified product details somewhere the next contractor can find them. It makes later repairs much easier to match.
Specify fire stopping early on refits, not as an afterthought. Details can then be picked to suit the actual pipes, cables and ducts, and the work runs in step with the M&E.
Also near Northfleet
Other services in Northfleet
From enquiry to sign-off
Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. In a town such as Northfleet, most jobs are single buildings. Your photographs, drawings or a site visit come first, followed by a fixed quote.
- The specification and schedule come first, so we know which details apply.
- 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.
Getting the site ready
- Flag any permit to work we’ll need
- Explain the parking and delivery arrangements
- Tell us your opening times and when work is allowed
Get a fixed quote
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.
Related advice
Signs you need fire stopping in Northfleet
When a seal departs from its tested detail, the evidence no longer covers it. An oversized gap, too shallow a bead, missing backing or two makers’ products combined are the usual culprits.
It’s worth sending us details if you spot any of the following:
- Fire-stopping items raised at inspection or handover
- Openings found when ceilings come down for a refit
- Damaged fire seals in risers and voids
- Old intumescent sealant that has split away
Office fit-outs on sites such as Imperial Business Park, 0.9 miles to the north-east of Northfleet, add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it.
Before you book anyone
- Their approach to joint depth and backing
- What level of public liability insurance do they hold?
- How long is the guarantee, and what does it include?
- Whether their applicators hold CSCS cards
Doing it in-house
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Building owners, agents and FMs in Northfleet
Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules.
We work for building owners and managing agents on everything from one building to a spread of sites around Northfleet. Several sites can go on one quote, so there’s one set of paperwork to deal with.