Kent · England
Adisham External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Adisham and across Kent. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Sealant pulling away from one side of the joint
- Leaking joints around cladding and façade panels
- Joints with sealant missing in places
External mastic for homes and businesses in Adisham
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. If you have plants rooting in failed movement joints and water getting into walls through failed joints, we can put it right, on façade panels, render & cladding joints and copings & trims alike.
Outside joints can only be sealed when they’re dry, so work in Adisham is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
All of our work is guaranteed for twelve months.
- Where
- Adisham (CT3)
- Region
- Kent
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How we quote for external mastic
We quote each job individually. These are the things that affect it:
- Which sealant suits the joint
- When we can work, for business premises
- Whether the work is at height
- The old material and how stubborn it is
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- Roughly how big the job is
- The type of property
- Where the property is
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work and send you a clear quote.
When something else is needed
New sealant cannot fix everything, and we’ll tell you before any work starts. It won’t solve:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracked brickwork or render that needs a builder or plasterer
- Movement that’s more than a sealant joint can take
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Façade panels
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
- Concrete & block
- Joints between brick and frames
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
If you manage several properties in or around Adisham, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Outside joints around Adisham
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. With historic houses such as Goodnestone Park (about 1.6 miles east) nearby, there’s older building stock in the area around Adisham as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
For landlords with property near Adisham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Adisham Church of England Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Adisham is about 5 miles south-east of Canterbury, in Kent. Anywhere in CT3, our applicators can take on external mastic. Across Kent, we cover 922 places, Adisham among them. For nearby work, see our Chelmsford page (46 miles or so).
Every address in CT3 is covered for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Station Road, The Street and Church Lane or anywhere close by, our applicators can take on the job. If you are just outside Adisham, we cover Bloodden (1 mile south-east), Aylesham (1 mile south), Bramling (2 miles north), Bekesbourne (2 miles north-west) and Womenswold (2 miles south). Larger places within reach include Canterbury (5 miles north-west), Margate (13 miles north-east), Dover (9 miles south-east), Folkestone (11 miles south), Ramsgate (12 miles north-east) and Broadstairs (13 miles north-east).
Near you in Adisham
There’s a railway station in Adisham itself: Adisham station. Other landmarks nearby include St Martins Hospital (4.3 miles north-west).
What the job involves on each surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap and keep the sealant to the right depth.
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that is happened, we rake it out and reseal it properly where it can be done safely.
How the visit works
Before we leave, we go over the finished joints with you. The work normally takes a few hours for a handful of joints, longer for a whole elevation, depending on the size of the job. Somewhere like Adisham needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- 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.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- For indoor joints, keep the area dry beforehand if you can
- Move anything stored near the joints
Ask for a quote
Need a quote? Please call 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before any work starts.
Related advice
Common questions in Adisham
Do you cover Adisham for external mastic?
Yes, Adisham is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Can you help a landlord with a rental near Adisham station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Do you seal joints where cladding meets other materials?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Do you take out the old sealant first?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
Where do you work from?
We are based in Crawley, and we work across South East England, London and Scotland.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint.
Is it messy?
We keep the work tidy. We protect what’s around the joints.
Also near Adisham
Other services in Adisham
Why deal with it now?
Resealing a run of joints in one go is normally better than patching one at a time. Joints of the same age tend to fail together and it means sorting access once. Older cottages and farmhouses around Adisham can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why choose Mr Mastic in Adisham
- Colour picked to suit the job
- We agree the colour with you first
- Trusted Arbo and Everbuild sealants
- Fully insured
Read how sealant jobs are priced and our reviews.
Common problems we fix in Adisham
Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, and it tears off the sides.
Look out for these signs:
- Rigid filler in a joint that should flex
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
- Failed sealant between panels on a façade
For an older house near a landmark such as Church of the Holy Innocents, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What your quote should include
- Whether they seal over old material or remove it
- The length of the guarantee
- How the surfaces are prepared before sealing
- How hidden problems are handled