Expansion Joint Sealing in Northfleet Green
Expansion and movement joint sealing in walls, decks and floors in Northfleet Green. CHAS accredited and fully insured, with a 12-month guarantee.
- Hardened, cracked sealant on exposed facades
- Chipped joint edges on forklift routes
- Joints packed with grit and debris
Expansion joint sealing across Northfleet Green
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Expansion joint sealing for commercial buildings in Northfleet Green
Width, depth and product all have to work together. Joint width must suit the movement and the movement class of the sealant, and depth is controlled using closed-cell backing rod, or bond-breaker tape in shallow joints. For wider joints, many sealant makers recommend a width-to-depth ratio, often around 2:1, and the bead is tooled so it grips the two faces alone. If you have arrises breaking up along floor joints and damp inside where a wall movement joint has failed, we can help, whatever the surface. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Northfleet Green it comes down to the same thing: the right product in a properly prepared joint.
Halls, schools and small commercial buildings near places like Northfleet Green have movement joints in brick, block and concrete too. They tend to be overlooked until something leaks or cracks.
Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Place
- Northfleet Green (DA13, DA11)
- Wider area
- Kent
- Guarantee
- A 12-month guarantee
- Price
- A fixed quote before we start
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
What happens if it’s left?
Leaving a failed movement joint rarely stays a small problem. Grit and water fill the gap and the material either side breaks up, so a reseal turns into an edge repair as well. Resealing early keeps the work to sealant. One visit to deal with every failing joint makes more sense than several trips to a place like Northfleet Green. Photos of every joint help us quote for the whole job.
A quote for movement joints depends on how many there are, their condition and the access, and any specification that applies. Call for a quote.
Why clients in Northfleet Green choose us
- Constructionline member for supplier checks
- 12 months’ guarantee on every job
- A fixed quote before work starts
- Public liability insurance in place
Take a look at our cost guide and how we’re accredited.
Places near Northfleet Green
Also in Northfleet Green
Northfleet Green: questions and answers
Is Imperial Business Park, near Northfleet Green, within your area?
Yes, sites like Imperial Business Park are within our area, along with the rest of Northfleet Green. Photos and a short description are enough for a first look.
Is Northfleet Green too small for you to travel to?
No. Small places get the same service as large ones. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.
Can the building stay open while you work?
Yes, with some planning. We agree a sequence with your contact so just one area at a time is disrupted.
How much does the work cost?
We don’t publish prices, because every site is different. Send photos or drawings and we’ll price it at a fixed figure.
Can you quote from photographs?
It depends on the job. Straightforward work can often be priced from photos and measurements, and bigger or more complex jobs typically get a visit.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
Are your applicators CSCS-carded?
Yes. Our applicators hold CSCS cards, which many sites require.
Honest limits
A few problems need another trade or a different fix, and we point that out rather than sealing over them:
- Changing the joint layout or spacing of a structure
- Waterproofing layers buried beneath the sealant
- Crumbling edges that would give a new bead nothing sound to grip
If you’re not sure, just speak to us on 01277 525 020 or email the details over and we’ll give you a straight answer.
What we seal
- Car park decks and ramps
- Brickwork movement joints
- Precast concrete panel joints
- Podiums and floor movement joints
- Cladding panel joints
- Blockwork control joints
Warehouse floors and decks around Northfleet Green
Central London is about 19 miles from Northfleet Green. The South East has large numbers of industrial estates and warehouses along the motorway corridors; their floors carry heavy traffic every shift. At least three named trading, business or retail sites lie within about 3 miles of Northfleet Green. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest.
In a school such as Painters Ash Primary School, movement joints in brick, block and hall floors tend to be forgotten until they leak. Another example is Imperial Retail Park, which lies north-east of Northfleet Green, where floors and yards would be done in stages around the occupiers. Office parks like Imperial Business Park (2.1 miles north-east of Northfleet Green) have decks, ramps and clad elevations whose joints take movement every day.
Northfleet Green is about 1 mile south of Northfleet, in Kent. We send applicators to Northfleet Green for movement joints. 931 places across Kent fall within our area, including Northfleet Green. London is covered too, some 19 miles away.
Work on movement joints is covered throughout DA13 and DA11. For a building on Downs Road and New Barn Road or nearby, send details and we’ll quote for movement joints. Nearby places we also cover include Southfleet (1 mile west), Painters Ash (1 mile north), Istead Rise (1 mile south-east), Hook Green (1 mile west) and Springhead (1 mile north) for movement joints. A short drive away, we cover Maidstone (13 miles south-east), Dartford (5 miles west), Sevenoaks (11 miles south-west), Tonbridge (15 miles south), Swanley (7 miles west) and Kings Hill (10 miles south).
Near you in Northfleet Green
Locally, jobs take us to sites close to Black Lion pub, Northfleet School for Girls and Saint George's Church of England School and the streets around them. The nearest railway station is Ebbsfleet International station, roughly 2 miles north of the centre. Nearby you will also find Gravesham Museum (2.3 miles north-east) and Bluewater (3.3 miles north-west). Not far away are Sawyers Lake.
General trades versus a specialist
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.
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.
Building owners, agents and FMs in Northfleet Green
Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Northfleet Green can sit alongside others in a wider programme.
Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.
Surface by surface
Concrete and precast panel joints
Precast and concrete panel joints move daily. The sealant needs the right movement capability and a controlled depth.
Cladding panel joints
Cladding panels move more than masonry as they heat and cool. A sealant with the right movement class is chosen, and we will confirm the colours available for the specified product.
On site: what to expect
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work typically takes a few hours to several weeks, depending on how many metres of joint there are and how much old sealant or filler needs removing, and we clear our waste as we work. Smaller jobs around Northfleet Green can be grouped with others nearby. A fixed quote is given before anything starts.
- Photos, joint lengths and drawings come to us, or we visit.
- We compare each joint’s width with the movement and the sealant’s capability, and flag anything that needs an engineer.
- Old sealant and debris are cut out of every joint.
- Edges are checked, and we tell you if any need repairing before sealing.
- The right sealant goes in at the right depth, bonded to the two sides only.
- Areas reopen once cured, and the work carries our 12-month guarantee.
Preparing the site
- Arrange parking or a loading space
- Tell us your opening times and when work is allowed
- Agree which areas must stay open
Getting a fixed quote
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.