Kent · England
South Stour External Mastic
We cover South Stour for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Sealant that has lost its bond to the brick or render
- Hard, crazed mastic that has stopped moving
- Rain getting behind render or cladding at a joint
External mastic in South Stour, done properly
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 a rigid filler would soon crack. We’re often asked to deal with cracked joints where brick meets render or frames and brick movement joints where the sealant has split, on façade panels, render & cladding joints and copings & trims.
Outside joints can only be sealed when they’re dry, so work in South Stour is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Where
- South Stour (TN25)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Common problems we fix in South Stour
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
Keep an eye out for these signs:
- Water getting into walls through failed joints
- Joints where the bead has come unstuck
- Panel joints letting water in
- Plants rooting in failed movement joints
Godinton House, about 4.8 miles north-west, is one of the historic houses in the wider area around South Stour, and older homes nearby need a sealant that suits their walls.
Before booking anyone
- Whether they seal over old material or remove it
- How long to leave it before use
- Are they insured?
- How long the guarantee is
What we can’t put right
It helps to know what we can’t do:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Structural movement, which needs a surveyor or engineer
- Failed render or damaged cladding panels
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Façade panels
How we quote for external mastic
We quote each job individually. This is what makes a difference:
- Whether there’s mould to deal with
- Working hours on commercial sites
- The product the joint needs
- Whether the work is at height
The cost reflects the work involved, not guesswork. That’s why we ask about the job first.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- A few photos by email, if you can
- The rough size of the job
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
Every job is quoted individually, so start by telling us what you need. Just call 0345 464 0079 or send us an email with the details.
Your questions about external mastic in South Stour
Do you cover South Stour for external mastic?
Yes, South Stour is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear price.
Is South Stour within the area you cover?
Yes. South Stour is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can landlords and businesses book you?
Yes. We work for householders, landlords, letting agents, businesses and hotels.
Do you use backing rod?
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.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
How long does the job take?
Typically it takes a few hours for a handful of joints, longer for a whole elevation. Larger jobs naturally take longer, and we will say how long yours will take.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
Other services in South Stour
Why act early in South Stour
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Where a wall is exposed, as many are in small places like South Stour, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
Why us?
- 4.9 on Google from 180+ five-star reviews
- One-year guarantee on every job
- Over 20 years’ experience
- Homes, businesses and hotels
Landlord and commercial work in South Stour
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
How it works
A visit follows a simple pattern: we look at the joints together, protect the area around them, do the work and tidy away. Most jobs take a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like South Stour, 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.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
Getting a quote
For a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
Advice
South Stour 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. With historic houses such as Godinton House (about 4.8 miles north-west) nearby, there’s older building stock in the area around South Stour as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
For site and facilities teams at buildings such as Finberry Primary School, larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Ashford International station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
South Stour is about 3 miles south-east of Ashford, in Kent. Jobs in South Stour get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. South Stour is one of 922 towns and villages in Kent where we work. Our Crawley page covers work nearby.
All of TN25 is within our area for external mastic, from the main roads to the quietest streets. Neighbouring places we cover for external mastic include Mersham (1 mile north-east), Sevington (2 miles north), Hinxhill Park (2 miles north), Ridgeway (3 miles north-east) and Hinxhill (3 miles north-east). Within a short drive, we also cover Ashford (3 miles north-west), Canterbury (14 miles north-east), Folkestone (11 miles east), Faversham (14 miles north), Hythe (8 miles east) and Davington (15 miles north).
What’s near South Stour
Around South Stour, our work takes us to homes and buildings near Poulton Wood, among other places. The nearest railway station is Ashford International station, roughly 2.8 miles north-west. Nearby you will also find William Harvey Hospital (2.4 miles north) and Ashford Designer Outlet (2.3 miles north-west). The countryside around South Stour includes Hatch Park.