Kent · England
External Mastic in Harbourland
Sealing brickwork movement joints, render, cladding and façade joints for Harbourland, backed by a one-year guarantee. Ask us for a quote.
- Cracked joints where brick meets render or frames
- Sealant that has lost its bond to the brick or render
- Plants rooting in failed movement joints
How the visit works
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes anything from a few hours to several days, depending on the building in most cases. For a village or hamlet like Harbourland, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Mention any leaks or damp you’ve noticed
- Clear items away from the joints we are working on
- Try not to wet indoor joints just before the visit
How to get a quote
To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Related advice
External mastic in Harbourland, done properly
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. Typical jobs include failed sealant between panels on a façade and brick movement joints where the sealant has split, across brickwork movement joints, concrete & block and copings & trims.
Around Harbourland, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
You’re covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or send us an email.
- Place
- Harbourland (ME14)
- Region
- Kent
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How the job changes by surface
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
Render joints
Rendered walls have joints at beads, openings and changes of material. We reseal them with a flexible exterior sealant that suits the render colour.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Wash walls gently around the sealant
- Never let anyone fill a movement joint with mortar
- Show decorators and builders where the movement joints are
- Ask before painting over external sealant
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
Leave it or put it right?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. Older cottages and farmhouses around Harbourland can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Why book with us
- Every job guaranteed for a year
- Any old sealant cut out fully, not covered over
- 180+ five-star Google reviews
- Domestic, commercial and hotel work
Read what affects the cost and what customers say.
Outside joints around Harbourland
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Stoneacre (about 3.3 miles south-east) are a reminder that the area around Harbourland has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
Letting a property close to Maidstone East station? Then split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as St Paul's Church, an extension built onto an older house moves differently, and the joint between them takes the strain. Managing a site like Sandling Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Harbourland is about 2 miles north of Maidstone, in Kent. If you need external mastic in Harbourland, it’s easy to get a quote: please ring 0345 464 0079 or email us. We cover Kent from our Crawley base. Our Kent coverage runs to 922 places, and Harbourland is one of them. London is on our list too, around 31 miles away.
Postcode districts we cover here for external mastic: ME14. Nearby, we also carry out external mastic in Penenden Heath (1 mile south), Foley Park (1 mile south), Grove Green (1 mile south-east), Ringlestone (1 mile west) and Sandling (1 mile west). We also work in nearby towns such as Sittingbourne (9 miles north-east), Sevenoaks (15 miles west), Gravesend (12 miles north-west), Tonbridge (13 miles south-west), Faversham (15 miles east) and Northfleet (13 miles north-west).
Near you in Harbourland
In Harbourland, that means homes and buildings near The King's Arms, Valley Park School and Vinters Valley Park, among other places. The nearest railway station is Maidstone East station, about 1.3 miles south-west of the centre. A little further out are KIMS hospital (0.9 miles south-east) and Queen's Own Royal West Kent Regiment Museum (1.4 miles south-west). Not far away are Burham Down and Boxley Hills.
Questions from Harbourland
Do you cover Harbourland for external mastic?
Yes, Harbourland is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
I let a flat near Maidstone East station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
What is backing rod for?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
How often do external joints need resealing?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly and reseal when it splits.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can you do several jobs on one visit?
Yes, we can. More than one area can go on one quote.
Should I point up the gap in my brickwork?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose. We’ll reseal it with a flexible sealant.
How much does external mastic cost in Harbourland?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or send us an email with a short description of the job.
Towns and villages near Harbourland
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Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Landlord and commercial work in Harbourland
We also work for property managers and facilities teams in Harbourland and across Kent. Several sites can be quoted together, and we are fully insured.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Quotes for external mastic in Harbourland
The quote reflects the job in front of us. We take into account:
- The type of sealant required
- Whether there’s mould to deal with
- Whether the work is at height
- The size of the job
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The type of property
- The problem you’ve noticed
- Where the property is
- How we’d reach the joints
We quote each job on its own, so start by telling us what you need. Just ring 0345 464 0079 or email us with the details and send photos if you have them.