Kent · England
Swanton External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Swanton, backed by a one-year guarantee. Ask us for a quote.
- Joints with sealant missing in places
- Joints pointed up with cement by mistake
- Water getting into walls through failed joints
Honest limits
It helps to know what we can’t do:
- Cracking across the wall rather than at a joint
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Subsidence or other structural problems
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Façade panels
- Render & cladding joints
External mastic in Swanton
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We strip the joint back and start again. We work on copings & trims, façade panels and concrete & block, and people most often call us about movement joints with cracked, split or missing sealant and water getting into walls through failed joints.
Outside joints can only be sealed when they’re dry, so work in Swanton is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Our work is backed for twelve months.
- Location
- Swanton (ME18)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Swanton: your questions answered
Can you help a landlord with a rental near Wateringbury station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Will you come out to Swanton?
Yes. Swanton is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new joint bonds to clean surfaces.
How often do external joints need resealing?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Our work comes with a one-year guarantee.
How do I get a quote for external mastic in Swanton?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses and we’re fully insured.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
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.
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Landlords and agents in Swanton can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Surface by surface
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible in all weathers.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant.
What happens on the day
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. Expect the work to take anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. In a small place like Swanton, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
- Tell us if parking is tricky
Getting a quote
We do not publish a price list. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
Related advice
Swanton buildings and the weather
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 Old Soar Manor (about 1.5 miles west) are a reminder that the area around Swanton has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as Mereworth Community Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For landlords with property near Wateringbury station, outside joints that have cracked can let damp into a rental, so check them between lets.
Swanton is about 5 miles north-east of Tonbridge, in Kent. Across the ME18 area, our applicators can take on external mastic. We cover 922 towns and villages across Kent, from the larger towns to small villages. For nearby work, see our London page (26 miles or so).
Postcode districts we cover here for external mastic: ME18. Nearby, we also carry out external mastic in West Peckham (1 mile south), New Pound (1 mile north-east), Mereworth (1 mile east), Herne Pound (1 mile north-east) and Roughway (1 mile west). Within a short drive, we also cover Maidstone (8 miles east), Dartford (14 miles north-west), Sevenoaks (7 miles west), Royal Tunbridge Wells (9 miles south-west), Gravesend (12 miles north) and Tonbridge (5 miles south-west).
What’s near Swanton
Typical jobs here are in homes near Swan on the Green pub. The nearest railway station is Wateringbury station, roughly 3 miles east. Other landmarks nearby include Beechin Wood Archery Museum (2 miles north-west) and Ightham Court (3.8 miles north-west).
More services for Swanton
Do you need external mastic in Swanton?
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
Keep an eye out for any of the following:
- Rain getting behind render or cladding at a joint
- Failed sealant between panels on a façade
- Weeds or debris growing in open joints
- Gaps where render, brick and frames meet
For an older house near a landmark such as Church of St Dunstan, older walls, gutters and the joints where extensions meet them need a flexible sealant.
What to look for in a quote
- Whether VAT is included
- How the surfaces are prepared before sealing
- How much experience the applicator has
- Whether you can choose the colour
Quotes for external mastic in Swanton
Your quote is based on your job. We look at:
- The old material and how stubborn it is
- The type of sealant required
- Mould in or behind the old joints
- How many rooms, windows or areas are involved
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What we need to know
To help us quote quickly, let us know:
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
- The problem you’ve noticed
- The type of property
To get a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Why it’s worth doing now in Swanton
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. Older cottages and farmhouses around Swanton can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear quote for the lot.
Why book with us
- Rated 4.9 stars on Google
- We leave the area clean and tidy
- Trusted Arbo and Everbuild sealants
- Over 20 years’ experience
Read our cost guide and our reviews.