Expansion Joint Sealing in Dunn Street
Expansion and movement joint sealing in walls, decks and floors in Dunn Street and across Kent. CHAS accredited and fully insured, with a 12-month guarantee.
- Brittle, chalky sealant on external joints
- Torn sealant in brick or block movement joints
- Expansion joints filled with dirt and stones
Expansion joint sealing in Dunn Street
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Maintenance after handover
Regular inspection catches problems early. In particular:
- Leave barriers in place until fresh joint sealant has cured
- Raise snow-clearing blades over deck joints where possible
- Keep product details with the building records for the next reseal
- Check joints after long freezing spells
On car parks, winter clearance can damage deck joint sealant. Lifting the blade at each joint avoids tearing the bead, and it’s worth checking joints once the cold weather has passed.
Once debris packs a failed joint, the structure has nowhere to expand. The edges then take the pressure and start to spall, turning a sealant job into a repair job. A sound seal keeps the joint working.
How we handle expansion joint sealing in Dunn Street
We cover the full range of movement joints: brickwork and blockwork joints, precast and cladding panel joints, concrete joints, car park decks and ramps, podiums and floor movement joints. The product depends on the movement, the weather and anything that runs over it and we name it in the quote. If you have torn sealant in brick or block movement joints and leaks through car park deck joints onto the level below, we can help, on cladding panel joints, precast concrete panel joints and car park decks and ramps alike. For commercial sealant work in Dunn Street, you deal with one contact from quote to sign-off, whether it’s one building or several.
Smaller community and commercial buildings around Dunn Street have their own movement joints in walls and floors. They tend to be overlooked until something leaks or cracks.
We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant.
- Where
- Dunn Street (ME7)
- Region
- Kent
- Guarantee
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
What we can’t put right
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be any of the following:
- Failed waterproofing membranes on podiums, roofs or decks (a waterproofing specialist’s job)
- Damaged metal nosings or cover plates over a joint
- Movement on a scale no sealant is meant to absorb
If you’re not sure, just give us a call on 01277 525 020 or use the quote form and we will give you a straight answer before you book.
What we seal
- Podiums and floor movement joints
- Precast concrete panel joints
- Car park decks and ramps
- Brickwork movement joints
- Cladding panel joints
- Blockwork control joints
Building owners, agents and FMs in Dunn Street
As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.
Nearby places to Dunn Street
Other services in Dunn Street
FAQs: Dunn Street
Does your area include sites such as Hempstead Valley Shopping Centre, near Dunn Street?
Yes. Estates, retail parks and business parks around Dunn Street, Hempstead Valley Shopping Centre among them, are all within reach. To start, just ring 01277 525 020 or send details through our quote form with the unit, the joints involved and your access times.
Can you take on a job at a hospital such as Spire Alexandra Hospital?
Yes, healthcare and care buildings are part of our work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Are you fully insured?
Yes. Mastic Doctor is fully insured, public liability included.
Do you take on multi-site work?
Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.
Will you come and look before quoting?
Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit.
What’s the difference between an expansion joint and a movement joint?
The general name is movement joint, and expansion joint is one common type. On site, people tend to use them interchangeably, and the sealing method is much the same.
What guarantee do you give on joint sealing?
The workmanship is guaranteed for 12 months from sign-off, and we’re fully insured for public liability. Keeping joints clear of debris helps them last.
Diagnose, treat, sign off
At the end of each section, we remove the tape, clean down and inspect every joint, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. Smaller jobs around Dunn Street can be grouped with others nearby. You’ll have a fixed quote before work 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.
- Old sealant and debris are cut out of every joint.
- Any broken arrises or friable edges are flagged before work goes further.
- 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.
Getting the site ready
- Tell staff and tenants when we’ll be in
- Let us know about inductions and permits
- Explain the parking and delivery arrangements
Request a quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, phone 01277 525 020 or email the details over.
Advice
Warehouse floors and decks around Dunn Street
Dunn Street is in the South East, one of the UK’s drier regions. Even so, yard and car park joints are only sealed when they’re dry and clean, and where de-icing salt is spread in winter, open joints let it in. The 3 miles around Dunn Street take in at least three named trading estates, business parks or retail parks. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest.
Places like Hempstead Valley Shopping Centre (1.1 miles north of Dunn Street) put trolleys over floor joints inside and cars over slab joints outside. Another example is Lordswood Industrial Estate, 1.1 miles to the west of Dunn Street, where floors and yards would be done in stages around the occupiers. Large sites such as Spire Alexandra Hospital, 1.9 miles west of Dunn Street, have car parks, service roads and long elevations with movement joints in brick and panels.
Dunn Street is about 3 miles south-east of Chatham, in Kent. Any commercial site in Dunn Street is covered, whether it’s a single job or part of a planned programme. Dunn Street is one of 931 places in Kent on our list for movement joints. We also cover London, around 31 miles from Dunn Street.
Commercial sites across ME7 are covered. Sites close to Dunn Street are covered too, including Lidsing (1 mile north-west), Bredhurst (1 mile north-east), Scragged Oak (1 mile south-east), Kemsley Street (1 mile north-east) and Lower Cox Street (1 mile south-east). Further afield, our area takes in Maidstone (5 miles south-west), Sittingbourne (7 miles east), Gravesend (11 miles north-west), Tonbridge (15 miles south-west), Faversham (14 miles east) and Northfleet (12 miles north-west).
Local landmarks in Dunn Street
Recent enquiries here include premises near South Wood and The Harrow pub, among other places. The closest station to Dunn Street is Rainham (Kent) station, about 3.3 miles north-east of the centre. A little further out are Medway megaliths (3.1 miles west) and KIMS hospital (2.8 miles south). Open spaces near Dunn Street include Burham Down and Boxley Hills.
What sets the cost
A fixed quote reflects the actual work. It allows for:
- Working within restricted access windows
- Removal of failed or old sealant
- Specialist products, such as fire-rated or hygienic sealants
- Backing rod, priming and other preparation
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.
What to include in your enquiry
To price the job accurately, we need to understand the site. Send us:
- Rough lengths or quantities, or drawings if you have them
- How the joints are reached, and at what height
- Any specification or named product
- Whether an asbestos survey exists
Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, give us a call on 01277 525 020 or email us.
Should maintenance staff do it?
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.