Oxfordshire · England
External Mastic in North Newington
Sealing brickwork movement joints, render, cladding and façade joints in North Newington, with a 12-month guarantee on every job. Ask us for a quote.
- Cracked joints where brick meets render or frames
- Joints pointed up with cement by mistake
- Brick movement joints where the sealant has split
External mastic for homes and businesses in North Newington
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. We work on render & cladding joints, joints between brick and frames and brickwork movement joints, and the jobs we see most are sealant that has lost its bond to the brick or render and weeds or debris growing in open joints.
Around North Newington, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
All of our work is guaranteed for twelve months.
- Where
- North Newington (OX15)
- Wider area
- Oxfordshire
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
Before booking, it’s worth knowing the limits:
- Damp that isn’t coming from the joint
- Cracked brickwork or render that needs a builder or plasterer
- Cutting new joints into brickwork, which is building work rather than sealant work
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before you book.
What we seal
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Façade panels
- Brickwork movement joints
Quotes for external mastic in North Newington
Some jobs are bigger than they look, and some smaller. The main factors:
- Any working-time requirements on site
- The number of rooms or windows
- Access and height
- Whether there’s mould to deal with
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Call for a quick quote and we’ll explain what it covers.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- A few pictures by email, if you can
- Whether it has been sealed before
Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand.
External mastic in North Newington: local notes
Historic houses like Broughton Castle (about 1 mile south) are a reminder that the area around North Newington 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. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Bishop Carpenter Church of England Aided 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.
North Newington is about 2 miles west of Banbury, in Oxfordshire. Every kind of property in North Newington can book us for external mastic. The work is guaranteed for a year. North Newington is one of 443 places in Oxfordshire we cover. You can also see our page for Oxford, about 22 miles away.
Our applicators cover all of the OX15 postcode area for external mastic. Local streets include Main Street, Park Lane and School Lane, all of which we cover. If you’re just outside North Newington, we cover Broughton (1 mile south), Neithrop (1 mile east), Ruscote (1 mile east), Wroxton (1 mile north) and Drayton (1 mile north-east). Larger places within reach include Bicester (14 miles south-east), Bure Park (14 miles south-east), Chipping Norton (10 miles south-west), Grimsbury (3 miles east), Woodstock (14 miles south) and Bloxham (3 miles south).
Local landmarks in North Newington
Locally, jobs take us to homes and businesses close to North Oxfordshire Academy, Drayton School and The Roebuck Public House, among other places. The closest station to North Newington is Banbury station, about 2.6 miles east. Nearby you will also find Castle Quay Shopping Centre (2.4 miles east) and Broughton Castle (1 mile south). Open spaces near North Newington include Crouch Hill and Woodford Bottom and Lamb's Pool.
Work for landlords, hotels 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.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
Surface by surface
Cladding and façade panels
If the façade has a specified sealant, that’s what we use, or one the system allows. Send us any details you have about the façade.
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible.
Signs you need external mastic in North Newington
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Common reasons people contact us are:
- Gaps where render, brick and frames meet
- Water getting into walls through failed joints
- Brick movement joints where the sealant has split
- Plants rooting in failed movement joints
Letting a property close to Banbury station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Before you book anyone
- Whether they seal over old material or remove it
- When the joint can take water or movement
- Whether the sealant suits the joint
- Who turns up on the day
Leave it or put it right?
Resealing a run of joints in one go is normally better than patching one at a time. They’ve weathered the same way and it means sorting access once. Older cottages and farmhouses around North Newington can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email.
Why North Newington clients choose us
- Full insurance on every job
- Sanitary silicone with an anti-fungal additive in wet areas
- Trusted Arbo and Everbuild sealants
- 20+ years of sealant experience
Take a look at what affects the cost or what customers say.
Also in North Newington
Questions from North Newington
Is North Newington in your area for external mastic?
Yes. We work across London and the South East, and North Newington is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
Will you come out to North Newington?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I’m a tenant. Can you help?
We’re happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
How do you reach high-level joints?
That depends on how high the joints are and the ground below. Low-level joints are straightforward; for higher ones, send details and we’ll confirm the access.
How do I get a quote for external mastic in North Newington?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before any work starts.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Do you use backing rod?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
How it works
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. In a small place like North Newington, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
If you are in North Newington and need external mastic, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.