Kent · England
Stone Corner External Mastic
We cover Stone Corner for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Rigid filler in a joint that should flex
- Rain getting behind render or cladding at a joint
- Old sealant gone brittle and cracked
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
External mastic in Stone Corner, done properly
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. We work on façade panels, render & cladding joints and joints between brick and frames, and the jobs we see most are damp patches traced to an open external joint and brick movement joints where the sealant has split.
Around Stone Corner, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Stone Corner (TN30)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
The process
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes a few hours for a handful of joints, longer for a whole elevation for a typical job. Somewhere like Stone Corner needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- 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.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- Tell us if parking is tricky
- For business premises, tell us about site rules or sign-in
- Let us know about stairs, lifts or work at height
Ask for a quote
To get a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear quote before any work starts.
Advice
How we quote for external mastic
The price is agreed before any work begins. It’s based on:
- The product the joint needs
- How many rooms, windows or areas are involved
- Access and height
- Whether there’s mould to deal with
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- How we’d reach the joints
- The address or postcode of the job
- A few pictures by email, if you can
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Towns and villages near Stone Corner
What else we do in Stone Corner
What sealant work cannot fix
We’d rather tell you now than do work that will not last, so these are the limits:
- Render that’s blown, hollow or coming away
- Rising or penetrating damp from elsewhere in the wall
- Structural movement, which needs a surveyor or engineer
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Where we work in Stone Corner
- Façade panels
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
Different surfaces, different methods
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Your questions about external mastic in Stone Corner
Is Stone Corner in your area for external mastic?
Yes. Our work covers London and the South East, and Stone Corner is part of that. You can phone 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear quote.
Can you help a landlord with a rental near Appledore (Kent) station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.
What does external mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we’ll talk you through it.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses.
Can a movement joint be filled with mortar?
No. Cement or mortar can’t stretch and the joint fails. If it has already been filled, we can normally cut it out and reseal it.
Are you insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. Then ring 0345 464 0079 or email us.
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Around Stone Corner, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
Why book with us
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
- Arbo and Everbuild products
- Experience in homes, commercial sites and hotels
Take a look at what affects the cost or customer reviews.
What external mastic looks like in Stone Corner
With historic houses such as Smallhythe Place (about 1.4 miles north-west) nearby, there’s older building stock in the area around Stone Corner as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Appledore (Kent) station, outside joints that have cracked can let damp into a rental, so check them between lets. Historic houses such as Smallhythe Place, about 1.4 miles north-west, show how far back building around Stone Corner goes.
Stone Corner is about 10 miles south-west of Ashford, in Kent. From the centre of Stone Corner to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Stone Corner is one of 922 places in Kent where we work. Crawley is on our list too, around 40 miles away.
Every address in TN30 is within our area for external mastic. Other places close to Stone Corner include Acton (1 mile south-west), The Stocks (1 mile south), Reading Street (1 mile north-east), Wittersham (1 mile south-west) and Stone in Oxney (2 miles east). Within a short drive, we also cover Ashford (10 miles north-east), Tenterden (3 miles north-west), Kennington (12 miles north-east), New Romney (10 miles east), Staplehurst (12 miles north-west) and Stanhope (9 miles north-east).
Around Stone Corner
Stone Corner’s nearest station is Appledore (Kent) station, roughly 3.9 miles east. Nearby you’ll also find Smallhythe Place (1.4 miles north-west). The countryside around Stone Corner includes Flatropers Wood.