Oxfordshire · England
External & façade joints in Great Milton, Oxfordshire
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Great Milton and across Oxfordshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Water getting into walls through failed joints
- Joints pointed up with cement by mistake
- Moss and dirt in joints with no sealant left
External mastic in Great Milton
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. Typical jobs include failed sealant between panels on a façade and water getting into walls through failed joints, across concrete & block, brickwork movement joints and joints between brick and frames.
In a village or hamlet like Great Milton, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Location
- Great Milton (OX44)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Great Milton
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together, and access only has to be arranged once. Older cottages and farmhouses around Great Milton can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What you get with us
- Experience in homes, commercial sites and hotels
- We never seal over old sealant
- 180+ five-star Google reviews
- A choice of colours where the product allows
Take a look at our cost guide and customer reviews.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Walk round the building once a year and look at the joints
- Leave the joints unpainted unless we have said otherwise
- Act on the first splits you see
- Keep soil, plants and ivy away from the joints
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.
FAQs for Great Milton
What guarantee comes with external mastic in Great Milton?
All our work, in Great Milton and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Can you do external mastic in Great Milton?
Yes. We work across London and the South East, and Great Milton is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
Do you work for landlords and businesses?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels.
Is it OK to seal over old sealant?
No, it won’t last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Do you have insurance?
Yes. We’re fully insured.
Do you use backing rod?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
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 work at height?
That depends on the building and the joints. We work on joints that can be reached safely. Give us some details and we will confirm the access.
External mastic in Great Milton: local notes
Historic houses like Garsington Manor (about 3.1 miles west) are a reminder that the area around Great Milton has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain. If you look after a building such as Great Milton Church of England Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Great Milton is about 5 miles west of Thame, in Oxfordshire. Great Milton gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 443 places across Oxfordshire, large and small. We also work in Oxford, around 7 miles away.
All of OX44 is covered for external mastic, from the main roads to the quietest streets. We cover properties on Church Road, Fullers Field and Green Hitchings and the roads around them. Nearby, we also carry out external mastic in Great Haseley (1 mile south-east), Milton Common (1 mile east), Tiddington (2 miles north-east), Albury (2 miles north-east) and Draycott (2 miles north-east). We also work in nearby towns such as Oxford (7 miles west), Didcot (10 miles south-west), Bicester (13 miles north), Abingdon-on-Thames (9 miles west), Thame (5 miles east) and Henley-on-Thames (15 miles south-east).
Around Great Milton
We work in homes and buildings around The Bell Inn. A little further out are Waterperry Gardens Rural Museum (2.1 miles north) and Slade Hospital (5.1 miles west). Open spaces near Great Milton include Shotover and Wells Farm.
Places near Great Milton
Also in Great Milton
Landlords, agents and businesses in Great Milton
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
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 a few hours for a handful of joints, longer for a whole elevation, and we explain the cure time before we leave. In a small place like Great Milton, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Mention any leaks or damp you’ve noticed
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or drop us an email.
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Quotes for external mastic in Great Milton
Every job gets its own quote. This is what makes a difference:
- When we can work, for business premises
- The number of rooms or windows
- Whether there’s mould to deal with
- The size of the job
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and give you a clear price before we start.
What to tell us for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- How we’d reach the joints
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
- A few pictures by email, if you can
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
How the job changes by surface
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. We reseal them with a low-modulus sealant over backing rod.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.