Oxfordshire · England
External & façade joints in Caversfield, Oxfordshire
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Caversfield. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant that has lost its bond to the brick or render
- Movement joints with cracked, split or missing sealant
- Movement joints filled with mortar instead of sealant
What we can’t put right
In fairness, some problems need a different trade:
- Render that is blown, hollow or coming away
- Structural movement, which needs a surveyor or engineer
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Copings & trims
- Joints between brick and frames
External mastic for homes and businesses in Caversfield
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We take the old material out and do it properly. We work on render & cladding joints, concrete & block and façade panels, and the jobs we see most are rigid filler in a joint that should flex and cracked joints where brick meets render or frames.
Outside joints can only be sealed when they’re dry, so work in Caversfield is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- Caversfield (OX27)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Caversfield
More services for Caversfield
What we do, step by step
At the end, we look at the finished work together. The visit itself usually takes a few hours for a handful of joints, longer for a whole elevation, depending on the amount of work. For a village or hamlet like Caversfield, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- 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.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
Getting a quote
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before we start.
Advice
Landlords, agents and businesses in Caversfield
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Outside joints around Caversfield
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of St Lawrence include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. Schools such as Southwold County Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Caversfield is about 1 mile north of Bicester, in Oxfordshire. From the centre of Caversfield to the outskirts, external mastic is available for homes and businesses alike. Our Oxfordshire coverage runs to 443 places, Caversfield among them. We also work in Oxford, about 12 miles from Caversfield.
All of OX27 is covered for external mastic, from the main roads to the quietest streets. That includes homes and businesses on Orchard Square, Davis Gardens and Thompson Drive and the roads around them. We also cover the places around Caversfield: Bure Park (1 mile south-west), Bicester (1 mile south), Stratton Audley (1 mile north-east), Bucknell (2 miles west) and Stoke Lyne (2 miles north-west). Further out, we also cover Oxford (12 miles south), Banbury (13 miles north-west), Thame (14 miles south-east), Kidlington (9 miles south-west), Headington Quarry (11 miles south) and St John Street area (12 miles south-west).
Local landmarks in Caversfield
In Caversfield, that means homes and buildings near Cooper School and The White Horse pub, among other places. The closest station to Caversfield is Bicester North station, about 1.2 miles south. A little further out are Ardley Castle (3.4 miles north-west) and Bicester Community Hospital (1.8 miles south). Not far away are Graven Hill.
Surface by surface
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so the movement is taken up.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Looking after it afterwards
So the new joints stay in good condition:
- Walk round the building once a year and look at the joints
- Do not let climbing plants root in the sealant
- Keep water from gutters off the wall
- Tell anyone working on the walls about the movement joints
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Signs you need external mastic in Caversfield
If plants are growing out of a joint, the sealant has usually failed or was never there. Dirt and roots then trap moisture in the joint.
It’s worth asking for a quote if you see:
- Plants rooting in failed movement joints
- Movement joints filled with mortar instead of sealant
- Weathered mastic that no longer stretches
- Water getting into walls through failed joints
Letting a property close to Bicester North station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
What your quote should include
- Whether they seal over old material or remove it
- How the joint is cleaned and prepared
- What product goes in the joint
- What the cure time is
Your questions about external mastic in Caversfield
Is Caversfield in your area for external mastic?
Yes, Caversfield is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Will you come out to Caversfield?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it OK to fill a movement joint with cement?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Is the work guaranteed?
Yes. There’s a 12-month guarantee on every job, wherever you are.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
How long does external mastic take?
Typically it takes a few hours to a few days, depending on the length of joint and the access. Bigger jobs take longer, and we’ll tell you how long to expect.