Kent · England
External Mastic in Swanley Village
Problem with your movement joints in Swanley Village? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Failed seals between different materials
- Movement joints filled with mortar instead of sealant
- Water getting into walls through failed joints
What we do, step by step
Before we leave, we go over the finished joints with you. The visit itself generally takes a few hours to a few days, depending on the length of joint and the access, depending on the size of the job. Somewhere like Swanley Village needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Clear items away from the joints we’re working on
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
Get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Related advice
About our external mastic in Swanley Village
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where mortar or filler would crack. If you’re dealing with joints pointed up with cement by mistake and failed sealant between panels on a façade, we can help, on concrete & block, brickwork movement joints and façade panels alike.
Outside joints can only be sealed when they’re dry, so work in Swanley Village is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
The work is covered for a year after we finish. If anything isn’t right with it, ring 0345 464 0079 or drop us an email.
- Place
- Swanley Village (BR8)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Swanley Village
Sealing over the top of old mastic doesn’t hold for long. The new layer can’t bond properly to old, weathered material, so we always take the old sealant out. In a small place like Swanley Village, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
Why choose Mr Mastic in Swanley Village
- Colour picked to suit the job
- Neat joints and a tidy finish
- Every job guaranteed for a year
- ARBOMaster approved applicator
Take a look at what affects the cost or our reviews.
What we are called out for in Swanley Village
If plants are growing out of a joint, the sealant has generally failed or was never there. Dirt and roots then trap moisture in the joint.
Signs it’s time to call us include:
- Movement joints with cracked, split or missing sealant
- Gaps where render, brick and frames meet
- Failed sealant between panels on a façade
- Weeds or debris growing in open joints
If you live in an older home near Church of Saint Paul, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before you book anyone
- Who does the work, and how experienced they are
- Which sealant they’ll use, and why
- How long the guarantee is
- Are they insured?
Places near Swanley Village
What else we do in Swanley Village
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
What external mastic looks like in Swanley Village
With historic houses such as Lullingstone Castle (about 3.3 miles south) nearby, there’s older building stock in the area around Swanley Village as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Downsview Community Primary School, larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Swanley station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Swanley Village is about 3 miles south-west of Dartford, in Kent. Wherever you are in the BR8 postcode area, we cover external mastic for homes and businesses. Our area takes in 922 places across Kent, large and small. There’s also a page for London, roughly 14 miles from Swanley Village.
Jobs for external mastic in BR8 is quoted and booked the same way as anywhere else. That includes homes and businesses on Church Road, Hotham Close and School Lane. If you are just outside Swanley Village, we cover Hextable (1 mile north-west), Puddledock (1 mile north-west), Stonehill Green (1 mile north-west), Wilmington (2 miles north) and Joyden's Wood (2 miles north-west). Within a short drive, we also cover Dartford (3 miles north-east), Sevenoaks (9 miles south), Gravesend (8 miles east), Tonbridge (15 miles south), Northfleet (7 miles east) and Kings Hill (13 miles south-east).
Local landmarks in Swanley Village
We work in homes and buildings around Hextable School and the streets around them. Swanley Village’s nearest station is Swanley station, about 1.5 miles south-west of the centre. Other landmarks nearby include Eynsford Castle (2.5 miles south) and Dartford Library (2.8 miles north). Not far away are Wansunt Pit.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Tell anyone working on the walls about the movement joints
- Walk round the building once a year and look at the joints
- Clear growth from the base of walls and joints
- Avoid pressure-washing directly into sealant joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Surface by surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant if the joint can be cleared.
Questions from Swanley Village
Will you come out to Swanley Village?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Swanley station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Why do you put foam in the joint first?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Is the work guaranteed?
Yes. Each job is guaranteed for twelve months, wherever you are.
What do you need from me for a quote?
Tell us what needs doing and where, plus photos if you have them. If we need more, we will ask.
Is there any odour?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
Quotes for external mastic in Swanley Village
Every job gets its own quote. This is what makes a difference:
- The product the joint needs
- Whether there’s mould to deal with
- How much there is to do
- When we can work, for business premises
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll explain what it covers.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Any access issues, like height or stairs
- The type of property
- The rough size of the job
- A few pictures by email, if you can
Want a quote for external mastic? Please ring 0345 464 0079 or email us with a few details. We’ll explain what we’d do and give you a clear price before any work starts.