Oxfordshire · England
External & façade joints in Banbury, Oxfordshire
Specialist external mastic for Banbury: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Joints with sealant missing in places
- Failed seals between different materials
- Failed sealant between panels on a façade
External mastic in Banbury
On houses, flats and commercial buildings across Banbury, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. We work on copings & trims, concrete & block and joints between brick and frames, and people most often call us about joints where the bead has come unstuck and plants rooting in failed movement joints.
Banbury mixes older houses and their gutters with newer estates of brick, render and uPVC trims. Gutter joints, fascia trims and the movement joints in newer brickwork all need sealant that can flex.
Every job comes with our one-year guarantee.
- Place
- Banbury (OX16, OX17)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Banbury
Water gets in through a failed movement joint. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Black mould and gaps in sealant do not fix themselves, and in a busy home in Banbury they get worse with every use. Replacing the sealant now is the simplest fix.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
Why book with us
- You choose the colour before work begins
- One-year guarantee on every job
- Quality sealants from Arbo and Everbuild
- We never seal over old sealant
Take a look at what affects the cost and what customers say.
What affects the quote in Banbury
The quote reflects the job in front of us. We take into account:
- Access and height
- When we can work, for business premises
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
What to tell us for a quote
What to tell us when you ask for a quote:
- Roughly how big the job is
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
- If someone has resealed it before
Asking for a quote is easy: let us know the job and the location and its rough size. A few photos by email make the job easier to understand.
FAQs for Banbury
Do you cover Banbury for external mastic?
Yes. Our work covers London and the South East, and Banbury is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Is there a guarantee on external mastic in Banbury?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Can you match the colour of my brickwork?
We aim for a joint that suits the wall rather than one that jumps out. We will talk through colour options before any work starts.
How long does the job take?
Most jobs take a few hours for a handful of joints, longer for a whole elevation. We will confirm how long when we quote.
Can you reach joints on upper floors?
Each building is different. Send us photos and a rough idea of the height, and we’ll confirm what access is needed.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
How it works
When we get to you, we compare the joints with what we discussed. 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. For a job in Banbury, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- 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.
Getting ready for the visit
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any parking rules near the property
How to get a quote
Want a quote for external mastic? Please phone 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Towns and villages near Banbury
Also in Banbury
Keeping the joints in good condition
Looking after new joints is easy:
- Make sure movement joints are not pointed over
- Check external joints each spring
- Fix overflowing gutters above sealed joints
- Keep high-pressure jets off 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.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Landlord and commercial work in Banbury
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
We work for landlords and agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Subsidence or other structural problems
- Cracking across the wall rather than at a joint
- Cutting new joints into brickwork, which is building work rather than sealant work
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Façade panels
- Brickwork movement joints
Signs you need external mastic in Banbury
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint.
These are the problems we are asked about most:
- Cracked joints where brick meets render or frames
- Water getting into walls through failed joints
- Plants rooting in failed movement joints
- Movement joints filled with mortar instead of sealant
Rented homes near Banbury station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Before you book anyone
- How long to leave it before use
- Whether they’re fully insured
- What the quote includes, VAT included or not
- Whether they seal over old material or remove it
Banbury buildings and the weather
With historic houses such as Broughton Castle (about 2.5 miles south-west) nearby, there’s older building stock in the area around Banbury as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Saint Paul's, 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 St Mary's Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Banbury is in Oxfordshire. Across the OX16 area, our applicators can take on external mastic. 443 places in Oxfordshire are on our list, large and small. Our Oxford page covers work nearby.
Here we cover the OX16 and OX17 postcode area for external mastic. That includes homes and businesses on High Street, Market Place and Grimsbury Square and the roads around them. Banbury is on the A361 and A422, which makes it straightforward to reach. Neighbouring places we cover for external mastic include Neithrop (1 mile west), Ruscote (1 mile west), Grimsbury (1 mile east), Drayton (1 mile north-west) and North Newington (2 miles west). Larger places within reach include Bicester (14 miles south-east), Bure Park (13 miles south-east), Chipping Norton (12 miles south-west), Woodstock (15 miles south), Bloxham (3 miles south) and Charlbury (14 miles south-west). As one of the bigger places in Oxfordshire, Banbury has every kind of property, from flats to offices.
Around Banbury
We work in homes and buildings around People's Park, Banbury Academy and Duke of Wellington pub and the streets around them. Banbury’s nearest station is Banbury station, roughly 0.8 miles east. Other landmarks nearby include Castle Quay Shopping Centre (0.5 miles east) and Banbury Castle (0.5 miles east). Open spaces near Banbury include Crouch Hill and Farthinghoe Nature Reserve.