Oxfordshire · England
External & façade joints in Neithrop, Oxfordshire
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Neithrop and across Oxfordshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Joints where the bead has come unstuck
- Weathered mastic that no longer stretches
- Gaps where render, brick and frames meet
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
About our external mastic in Neithrop
External mastic is a job where short cuts show quickly. 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. If you have sealant that has lost its bond to the brick or render and joints pointed up with cement by mistake, we can help, whatever the surface.
Outbuildings, garages and conservatories around homes in places like Neithrop add more joints to look after. Leaks usually start at a gutter end, a garage door frame or where an extension meets the house.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Location
- Neithrop (OX16, OX15)
- Region
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
More services for Neithrop
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Have failed joints looked at early
- Wash walls gently around the sealant
- Ask before painting over external sealant
- Don’t let climbing plants root in the sealant
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
What affects the quote in Neithrop
For a quick quote, just ask. The main things that affect it are:
- How much there is to do
- Whether there’s mould to deal with
- The old material and how stubborn it is
- Working hours on commercial sites
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What to tell us for a quote
When you contact us, it’s useful to know:
- Any previous sealing or DIY work
- The type of property
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or email us.
Your questions about external mastic in Neithrop
I let a flat near Banbury station. Can you help?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Is Neithrop within the area you cover?
Yes. Neithrop 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.
How long does the job take?
Typically it takes a few hours for a handful of joints, longer for a whole elevation. Bigger jobs take longer.
Will the new joint stand out?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin.
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.
Where is Mr Mastic based?
We work from Crawley. We cover Neithrop and the rest of Oxfordshire.
Can I add another job to the visit?
Of course. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
How do you reach high-level joints?
It depends on the height and the site. Low-level joints are straightforward; for higher ones, send details and we’ll confirm the access.
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Loose or hollow render, which needs re-rendering
- Walls that need new movement joints cut into them
- Rising or penetrating damp from elsewhere in the wall
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Where we work in Neithrop
- Render & cladding joints
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Façade panels
Surface by surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two.
What we do, step by step
There isn’t much for you to do on the day. Show us the job and we will take it from there. The work itself takes anything from a few hours to several days, depending on the building from start to finish. A visit to Neithrop is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
- Mention any parking rules near the property
How to get a quote
If you are in Neithrop and need external mastic, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Related advice
Why it’s worth doing now in Neithrop
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together and it means sorting access once. In a smaller place like Neithrop, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in Neithrop
- Arbo and Everbuild products
- 180+ five-star Google reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- A 12-month guarantee on all work
Take a look at our cost guide and customer reviews.
Walls and rooflines in Neithrop
With historic houses such as Broughton Castle (about 1.8 miles south-west) nearby, there’s older building stock in the area around Neithrop as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like St Joseph's Catholic Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Letting a property close to Banbury station? Then outside joints that have cracked can let damp into a rental, so check them between lets. If you live in an older home near St Paul's Church Centre, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Neithrop is about 1 mile west of Banbury, in Oxfordshire. Every kind of property in Neithrop can book us for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Across Oxfordshire, we cover 443 places, Neithrop among them. Our Oxford page covers work nearby (22 miles or so).
Jobs for external mastic in OX16 and OX15 is quoted and booked the same way as anywhere else. Streets in the area include Abbey Road, Lunnun Road and Bailey Road, all of which we cover. If you’re just outside Neithrop, we cover Ruscote (1 mile north), Banbury (1 mile east), Drayton (1 mile north-west), North Newington (1 mile west) and Broughton (2 miles south-west). Larger places within reach include Bicester (14 miles south-east), Bure Park (14 miles south-east), Chipping Norton (11 miles south-west), Woodstock (15 miles south), Bloxham (3 miles south) and Charlbury (14 miles south).
What’s near Neithrop
Typical jobs here are in homes near Drayton School, People's Park and Admiral Holland pub and the streets around them. The nearest railway station is Banbury station, roughly 1.5 miles east of the centre. A little further out are Castle Quay Shopping Centre (1.2 miles east) and Horton General Hospital (1.2 miles east). Green spaces nearby include Farthinghoe Nature Reserve and Crouch Hill.