Kent · England
External & façade joints in South Alkham, Kent
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in South Alkham. Fully insured, ARBOMaster approved and guaranteed for a year.
- Failed seals between different materials
- Movement joints filled with mortar instead of sealant
- Sealant that has lost its bond to the brick or render
Walls and rooflines in South Alkham
South Alkham is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Historic houses like Acrise Place (about 3.5 miles west) are a reminder that the area around South Alkham has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
For an older house near a landmark such as Church of St Anthony the Martyr, older walls, gutters and the joints where extensions meet them need a flexible sealant.
South Alkham is about 4 miles west of Dover, in Kent. Across the CT15 area, we cover external mastic for homes and businesses. Our Kent coverage runs to 922 places, South Alkham among them. We also work in Chelmsford, about 52 miles from South Alkham.
Here we cover the CT15 postcode area for external mastic. If you need external mastic at a property on Meggett Lane and Alkham Valley Road or a nearby road, we can help. If you’re just outside South Alkham, we cover Alkham (1 mile north-east), Drellingore (1 mile south-west), Chalksole Green (1 mile north), Ewell Minnis (1 mile north-east) and Wolverton (1 mile north-east). Further out, we also cover Ashford (15 miles west), Canterbury (12 miles north-west), Dover (4 miles east), Folkestone (4 miles south-west), Deal (10 miles north-east) and Hythe (7 miles south-west).
Near you in South Alkham
In South Alkham, that means homes and buildings near Sladden Wood. The nearest railway station is Kearsney station, about 2.8 miles north-east. A little further out are Folkestone Castle (3.2 miles south-west) and Crabble Corn Mill (3.1 miles east). For a walk, there’s Dover Western Heights and Sugar Loaf Hill.
About our external mastic in South Alkham
For buildings in South Alkham, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. We’re often asked to deal with failed sealant between panels on a façade and weeds or debris growing in open joints, across brickwork movement joints, render & cladding joints and copings & trims.
Outside joints can only be sealed when they’re dry, so work in South Alkham is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
There’s a 12-month guarantee on every job.
- Location
- South Alkham (CT15)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. Where a wall is exposed, as many are in small places like South Alkham, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
Why book with us
- Over 20 years’ experience
- A sealant colour to suit the surroundings
- Arbo and Everbuild products
- Tidy, careful work
Read our cost guide and customer reviews.
When it is not the sealant
We will not take on work that won’t last, so these are the limits:
- Rising or penetrating damp from elsewhere in the wall
- Structural movement, which needs a surveyor or engineer
- Cracks in the bricks or render themselves, away from the joints
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before you book.
Joints and surfaces we work on
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Façade panels
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Also near South Alkham
More services for South Alkham
What we do, step by step
When we arrive, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work starts. Most jobs take anything from a few hours to several days, depending on the building. Somewhere like South Alkham needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
Get a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.
Read more
Surface by surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
What we’re called out for in South Alkham
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
Look out for these signs:
- Gaps where render, brick and frames meet
- Joints pointed up with cement by mistake
- Plants rooting in failed movement joints
- Brick movement joints where the sealant has split
For landlords with property near Kearsney station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- How long to leave it before use
- What the quote includes, VAT included or not
- What happens if the job turns out different
- Whether they’re fully insured
FAQs for South Alkham
Will you come out to South Alkham?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Kearsney station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
How long does external mastic take?
That depends on how much there is to do, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We’ll tell you when we quote.
Do you work at height?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we will confirm what access is needed.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Should I point up the gap in my brickwork?
No. A mortar-filled joint can’t move, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Is the work guaranteed?
Yes. All our work carries a one-year guarantee.
Aftercare tips
Aftercare is simple:
- Act on the first splits you see
- Tell anyone working on the walls about the movement joints
- Deal with leaking gutters that soak the joints below
- Keep movement joints as flexible joints, not mortar
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.