Oxfordshire · England
External & façade joints in Lower Arncott, Oxfordshire
Problem with your movement joints in Lower Arncott? We remove the old material, prepare the joints and seal them properly.
- Gaps where render, brick and frames meet
- Joints with sealant missing in places
- Weeds or debris growing in open joints
What the job involves on each surface
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant.
External mastic in Lower Arncott, done properly
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. Typical jobs include water getting into walls through failed joints and sealant pulling away from one side of the joint, on façade panels, render & cladding joints and brickwork movement joints.
Around Lower Arncott, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Lower Arncott (OX25)
- Region
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
More services for Lower Arncott
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Do not let climbing plants root in the sealant
- Show decorators and builders where the movement joints are
- Keep high-pressure jets off the joints
- Deal with leaking gutters that soak the joints below
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges and let water in behind.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
Questions from Lower Arncott
Is Lower Arncott in your area for external mastic?
Yes. We work across London and the South East, and Lower Arncott is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Do you cover smaller places like Lower Arncott?
Yes. Lower Arncott is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Where do you work from?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Can you seal over the old sealant?
No, it will not last. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is usually a movement joint. It gives the wall room to move and needs a flexible seal, not mortar.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Walls and rooflines in Lower Arncott
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Boarstall Tower (about 2.5 miles south) are a reminder that the area around Lower Arncott has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
If you let a flat or house near Bicester Village station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Five Acres Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. If you live in an older home near Church of St Mary the Virgin, an extension built onto an older house moves differently, and the joint between them takes the strain.
Lower Arncott is about 3 miles south-east of Bicester, in Oxfordshire. Every kind of property in Lower Arncott is covered for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Our area takes in 443 places across Oxfordshire, large and small. There’s also a page for Oxford, roughly 9 miles from Lower Arncott.
Our applicators cover all of OX25 for external mastic and the streets around it. External mastic is available to properties on Ploughley Road and Willowbrook. Close by, we work in Upper Arncott (1 mile south), Ambrosden (1 mile north), Merton (2 miles west), Murcott (2 miles south-west) and Fencott (2 miles south-west). Larger places within reach include Oxford (9 miles south-west), Bicester (3 miles north-west), Abingdon-on-Thames (14 miles south-west), Thame (10 miles south-east), Kidlington (8 miles west) and Chinnor (14 miles south-east).
What’s near Lower Arncott
Around Lower Arncott, our work takes us to homes and buildings near The Plough pub and the streets around them. For rail, the closest station is Bicester Village station, roughly 2.8 miles north-west of the centre. Well-known places in the area include Bicester Community Hospital (3.2 miles north-west) and Bicester Village (2.9 miles north-west). For a walk, there’s Graven Hill and Woodsides Meadow.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Quotes for external mastic in Lower Arncott
We quote each job individually. This is what makes a difference:
- When we can work, for business premises
- Which sealant suits the joint
- The number of rooms or windows
- Any mould that needs treating
What it costs depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before work begins.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- A few photos by email, if you can
- The address or postcode of the job
- The type of property
- The rough size of the job
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or drop us an email.
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours to a few days, depending on the length of joint and the access. Somewhere like Lower Arncott needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Mention any sign-in or site rules at work premises
- Try not to wet indoor joints just before the visit
Ask for a quote
For external mastic in Lower Arncott, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Related advice
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
What happens if it’s left?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. Where a wall is exposed, as many are in small places like Lower Arncott, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why book with us
- 180+ five-star Google reviews
- Every job guaranteed for a year
- Approved under the ARBOMaster scheme
- Old sealant always removed completely
Read our cost guide and our reviews.