Kent · England
External & façade joints in Stone Cross, Kent
Sealing brickwork movement joints, render, cladding and façade joints for Stone Cross, backed by a one-year guarantee. Call for a quick quote.
- Movement joints filled with mortar instead of sealant
- Hard, crazed mastic that has stopped moving
- Sealant pulling away from one side of the joint
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Stone Cross 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
- Let us know about stairs, lifts or work at height
Ask for a quote
We don’t publish a price list, because every job is different. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or drop us an email.
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How we handle external mastic in Stone Cross
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where mortar or filler would crack. Common call-outs are for joints where the bead has come unstuck and damp patches traced to an open external joint, across render & cladding joints, concrete & block and joints between brick and frames.
Older homes in small places like Stone Cross may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
Every job is covered by a one-year guarantee, wherever you are in Kent.

- Place
- Stone Cross (TN25)
- Region
- Kent
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Stone Cross
More services for Stone Cross
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Cracks in the bricks or render themselves, away from the joints
- Subsidence or other structural problems
- Rising or penetrating damp from elsewhere in the wall
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before booking.
What we seal
- Brickwork movement joints
- Copings & trims
- Façade panels
- Render & cladding joints
- Concrete & block
- Joints between brick and frames
Quotes for external mastic in Stone Cross
For a quick quote, just ask. The main things that affect it are:
- Whether the work is at height
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
- The number and length of the joints
What it costs depends on how much there is to do, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
Asking for a quote
What to tell us when you ask for a quote:
- Photos by email, if that’s easy
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
Need a quote? Please phone 0345 464 0079 or email us with a few details. We will explain what we’d do and give you a clear price before any work starts.
Do you need external mastic in Stone Cross?
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.
Keep an eye out for these signs:
- Joints pointed up with cement by mistake
- Rain getting behind render or cladding at a joint
- Sealant that has lost its bond to the brick or render
- Leaking joints around cladding and façade panels
In and around Stone Cross, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Questions to ask before you book
- Is VAT in the price?
- How much experience the applicator has
- Whether you can choose the colour
- Is the old sealant removed completely?
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Have failed joints looked at early
- Deal with leaking gutters that soak the joints below
- Look over the joints every year, ideally after winter
- Keep high-pressure jets off the joints
Do not paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
Should I try it myself first?
A careful DIYer can reseal a simple joint, 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.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Outside joints around Stone Cross
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Ham Street station, split movement joints are easy to miss on a rental until damp shows inside.
Stone Cross is about 4 miles south of Ashford, in Kent. Anywhere in TN25, our applicators can take on external mastic. We cover 922 towns and villages across Kent, from the larger towns to small villages. Crawley is on our list too, about 47 miles from Stone Cross.
Jobs for external mastic in TN25 works the same way as everywhere else we cover. If you need external mastic at a property on Stone Cross Road and Frith Road or anywhere close by, we can help. We also cover the places around Stone Cross: Bromley Green (2 miles west), Ruckinge (2 miles south), Orlestone (2 miles south-west), Hamstreet (2 miles south-west) and Kenardington (4 miles south-west). Larger places within reach include Ashford (4 miles north), Canterbury (15 miles north-east), Folkestone (12 miles east), Faversham (15 miles north), Hythe (8 miles east) and Preston (15 miles north).
What’s near Stone Cross
Locally, jobs take us to homes and businesses close to Poulton Wood. The closest station to Stone Cross is Ham Street station, roughly 2.3 miles south-west of the centre. Other landmarks nearby include William Harvey Hospital (3.5 miles north) and Ashford Designer Outlet (3.1 miles north). Not far away are Orlestone Forest.
Different surfaces, different methods
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
Common questions in Stone Cross
I let a flat near Ham Street station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can ring 0345 464 0079 or email us with the details for a clear quote.
Is Stone Cross in your area for external mastic?
Yes. We work across London and the South East, and Stone Cross is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Do you guarantee your work?
Yes. All our work carries our 12-month guarantee.
Do you do commercial work?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Can I add another job to the visit?
Yes, we can. More than one area can go on one quote.
