Oxfordshire · England
External & façade joints in Radley, Oxfordshire
External mastic across Radley and nearby, with old sealant always removed completely.
- Rigid filler in a joint that should flex
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
Your questions about external mastic in Radley
Can you do external mastic in Radley?
Yes, Radley is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear quote.
Do you cover smaller places like Radley?
Yes, Radley is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so the joint between them must be flexible. We choose one that suits both surfaces.
What colours does the sealant come in?
The sealant colour is picked to suit the wall. There’s a wide choice of exterior colours.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.
External mastic in Radley, done properly
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. If you have plants rooting in failed movement joints and joints with sealant missing in places, we can help.
Older homes in small places like Radley may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water normally gets in.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Radley (OX14)
- Region
- Oxfordshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need external mastic in Radley
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Keep an eye out for these signs:
- Weathered mastic that no longer stretches
- Moss and dirt in joints with no sealant left
- Joints pointed up with cement by mistake
- Sealant that has lost its bond to the brick or render
If you live in an older home near Church of St James, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Comparing quotes
- How long to leave it before use
- How the surfaces are prepared before sealing
- Are they insured?
- The length of the guarantee
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Walk round the building once a year and look at the joints
- Keep water from gutters off the wall
- Show decorators and builders where the movement joints are
- 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.
Act while the splits are small. Then it’s a straightforward cut-out and reseal before water has had years to get in.
When it isn’t the sealant
We’ll always be straight with you, so here’s what new sealant will not do:
- Damp that isn’t coming from the joint
- Failed render or damaged cladding panels
- Walls that need new movement joints cut into them
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
What we seal
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Façade panels
- Concrete & block
- Joints between brick and frames
What happens if it’s left?
A failed movement joint lets water into the wall and can run behind render or cladding. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. In a small place like Radley, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Combining jobs into one visit is normally more efficient than separate visits. We’ll send you a clear quote for the lot.
What you get with us
- White, clear, grey or coloured to suit, where the product allows
- Arbo and Everbuild products
- Any old sealant cut out fully, not covered over
- Approved under the ARBOMaster scheme
Read what affects the cost and what customers say.
External mastic in Radley: local notes
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. With historic houses such as Clifton Hampden Manor (about 2.7 miles south-east) nearby, there’s older building stock in the area around Radley as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as Radley Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Radley station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Radley is about 2 miles north-east of Abingdon-on-Thames, in Oxfordshire. If you need external mastic in Radley, please call 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Oxfordshire. Our Oxfordshire coverage runs to 443 places, Radley among them.
Postcode districts we cover here for external mastic: OX14. Local streets include Church Road, Selwyn Crescent and Ferny Close. Other places close to Radley include Abingdon-on-Thames (2 miles south-west), Nuneham Courtenay (2 miles east), Culham (2 miles south), Clifton Hampden (3 miles south-east) and Caldecott (3 miles south-west). Further out, we also cover Oxford (4 miles north), Didcot (5 miles south), Bicester (15 miles north), Witney (13 miles north-west), Thame (12 miles east) and Wantage (10 miles south-west).
What’s near Radley
Around Radley, our work takes us to homes and buildings near Nuneham Courtenay, Fitzharrys School and Bowyer Arms, among other places. There’s a railway station in Radley itself: Radley station. Nearby you will also find Littlemore Hospital (2.3 miles north) and FitzHarris Castle (1.8 miles south-west). Green spaces nearby include Harcourt Hill and Dry Sandford Pit.
Also near Radley
More services for Radley
The process
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Radley, the journey is planned in advance: 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.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Move anything stored near the joints
- Let us know about earlier repairs to the joints
Get a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or email us.
Read more
Landlord and commercial work in Radley
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured for the work.
Different surfaces, different methods
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so its sealant has to stay flexible.
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. We prime where the product needs it.