Kent · England
External Mastic in Lydden
Sealing brickwork movement joints, render, cladding and façade joints in Lydden, with a 12-month guarantee on every job. Ask us for a quote.
- Gaps where render, brick and frames meet
- Failed sealant between panels on a façade
- Joints pointed up with cement by mistake
Looking after it afterwards
After the cure time, these simple habits help:
- Avoid pressure-washing directly into sealant joints
- Keep water from gutters off the wall
- Never let anyone fill a movement joint with mortar
- Check the sealant is paintable before painting near it
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
External mastic in Lydden
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. We are often asked to deal with failed seals between different materials and joints with sealant missing in places, across façade panels, copings & trims and concrete & block.
Somewhere as small as Lydden, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Lydden (CT15)
- Region
- Kent
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Lydden: your questions answered
Do you cover Lydden for external mastic?
Yes. Our work covers London and the South East, and Lydden is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
Do you work for landlords with property near Kearsney station?
Yes, we work for landlords and agents. Just call 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Do you have insurance?
Yes, we are fully insured for every job we do.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Can you seal joints between render and window frames?
Yes. Materials like render, brick, metal and uPVC all move differently, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
Can a movement joint be filled with mortar?
No. Cement or mortar can’t stretch. Where a joint has been mortared, it can often be raked out and sealed properly.
Why act early in Lydden
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way. Where a wall is exposed, as many are in small places like Lydden, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, ring 0345 464 0079 or email us and we will give you an honest view and a quote.
Why book with us
- Sealant colour chosen to suit
- White, clear, grey or another colour, product permitting
- Colour agreed with you before any work starts
- We are fully insured
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Outside joints around Lydden
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.
Homes close to Church of St Mary Church of St Mary Virgin include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. For site and facilities teams at buildings such as Lydden Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Lydden is about 3 miles north-west of Dover, in Kent. Wherever you are in the CT15 postcode area, we can carry out external mastic at your property. Our Kent coverage runs to 922 places, and Lydden is one of them. There’s also a page for Chelmsford, about 51 miles away.
Here we cover the CT15 postcode area for external mastic. Whether your property is on St Marys Rise, Canterbury Road and The Close or anywhere close by, our applicators can take on the job. We also cover the places around Lydden: Coldred (1 mile north), Ewell Minnis (1 mile south-west), Temple Ewell (1 mile south-east), Halfway Street (1 mile north-west) and Wolverton (2 miles south). Further out, we also cover Canterbury (11 miles north-west), Dover (3 miles south-east), Folkestone (6 miles south-west), Ramsgate (14 miles north-east), Deal (8 miles north-east) and Herne Bay (15 miles north).
What’s near Lydden
Around Lydden, our work takes us to homes and buildings near Sladden Wood and Hope Inn and the streets around them. The closest station to Lydden is Kearsney station, roughly 1.6 miles south-east of the centre. Well-known places in the area include Dover Transport Museum (2.3 miles south-east) and Dover Castle (4.3 miles south-east). The countryside around Lydden includes Dover Western Heights.
When to call us in Lydden
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the next time the wall moves, it splits or pulls away.
The problems people generally mention when they call are:
- Joints with sealant missing in places
- Weathered mastic that no longer stretches
- Rain getting behind render or cladding at a joint
- Panel joints letting water in
If you let a flat or house near Kearsney station, outside joints that have cracked can let damp into a rental, so check them between lets.
What your quote should include
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
- Is VAT in the price?
- When the joint can take water or movement
Nearby places to Lydden
What else we do in Lydden
When something else is needed
Sealant is not the answer to every problem, and we will tell you before work begins. It won’t solve:
- Movement that’s more than a sealant joint can take
- Damp that isn’t coming from the joint
- Adding movement joints to masonry that has none
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Façade panels
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
What affects the quote in Lydden
Jobs vary more than people expect. The main factors:
- How much old sealant there is and how hard it is to remove
- How much there is to do
- The product the joint needs
- Whether there’s mould to deal with
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- Any previous sealing or DIY work
- The address or postcode of the job
- The type of property
- Access, such as stairs, a lift or height
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or drop us an email.
How it works
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before work begins. The work generally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Lydden needs a little journey planning: 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we’re working on
Ask for a quote
We quote each job on its own, so start by telling us what you need. Just phone 0345 464 0079 or drop us an email with the details and send photos if you have them.