Oxfordshire · England
External Mastic in Leafield
Professional external mastic in and around Leafield, with every bit of old sealant taken out first and a 12-month guarantee.
- Sealant that has lost its bond to the brick or render
- Cracked joints where brick meets render or frames
- Movement joints with cracked, split or missing sealant
What affects the cost of external mastic
The quote reflects the job in front of us. We look at:
- The number and length of the joints
- Whether there’s mould to deal with
- The product the joint needs
- How many areas need sealing
What you pay reflects the work, not guesswork. That’s why we ask a few questions first.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- Roughly how big the job is
- Where the property is
- How we’d reach the joints
- If someone has resealed it before
Every job is quoted individually, so start by telling us what you need. Simply ring 0345 464 0079 or drop us an email and describe the job, and pictures are welcome.
How we handle external mastic in Leafield
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We strip the joint back and start again. Typical jobs include weathered mastic that no longer stretches and gaps where render, brick and frames meet, across joints between brick and frames, façade panels and brickwork movement joints.
Outside joints can only be sealed when they’re dry, so work in Leafield is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Your job is guaranteed for a year, as with all our work.
- Place
- Leafield (OX29)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access and we leave things clean and tidy. For a village or hamlet like Leafield, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- 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
- Clear items away from the joints we are working on
- Tell us about any previous sealing or DIY attempts
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.
Advice
Why it’s worth doing now in Leafield
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Older cottages and farmhouses around Leafield can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What you get with us
- We’re fully insured
- Colour agreed with you before any work starts
- Every job guaranteed for a year
- Sanitary silicone with an anti-fungal additive in wet areas
Signs you need external mastic in Leafield
Sunlight, wet weather and frost wear exterior sealant down. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
Common reasons people contact us include:
- Plants rooting in failed movement joints
- Leaking joints around cladding and façade panels
- Water getting into walls through failed joints
- Joints pointed up with cement by mistake
For landlords with property near Ascott-Under-Wychwood station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- Whether they seal over old material or remove it
- What product goes in the joint
- How the joint is cleaned and prepared
- What guarantee comes with the work
Landlords, agents and businesses in Leafield
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.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
What we cannot put right
In fairness, there are a few things sealant will not fix:
- Loose or hollow render, which needs re-rendering
- Rising or penetrating damp from elsewhere in the wall
- Movement that is more than a sealant joint can take
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Façade panels
Questions from Leafield
Do you cover smaller places like Leafield?
Yes. Leafield is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Ascott-Under-Wychwood station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Do you use backing rod?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
Should I point up the gap in my brickwork?
No, not if it’s a movement joint. Pointing it stops it working, and the wall may crack nearby. We will reseal it with a flexible sealant.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Is there a guarantee?
Yes, for a year. If anything isn’t right with the work within the year, let us know and we’ll sort it.
Places near Leafield
What else we do in Leafield
Outside joints around Leafield
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. With historic houses such as Minster Lovell Hall (about 2.5 miles south) nearby, there’s older building stock in the area around Leafield as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Homes close to Church of St Michael and All Angels include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. Schools such as Leafield Church of England Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Leafield is about 4 miles north-west of Witney, in Oxfordshire. If you need external mastic in Leafield, it’s easy to get a quote: please phone 0345 464 0079 or email us. We cover Oxfordshire from our Crawley base, Leafield included. Across Oxfordshire, we cover 443 places, Leafield among them. You can also see our page for Oxford, roughly 14 miles from Leafield.
Here we cover the OX29 postcode area for external mastic. You’ll find streets such as Hewitts Close, Witney Lane and Chapel Close, all of which we cover. We also cover the places around Leafield: Ascott d'Oyley (2 miles north-west), Ascott-under-Wychwood (2 miles north-west), Crawley (2 miles south-east), Ascott Earl (2 miles north-west) and Chilson (3 miles north). We also work in nearby towns such as Oxford (14 miles south-east), Abingdon-on-Thames (15 miles south-east), Witney (4 miles south-east), Carterton (5 miles south-west), Faringdon (13 miles south) and Kidlington (11 miles east).
Near you in Leafield
Typical jobs here are in homes near The Fox pub and the streets around them. The closest station to Leafield is Ascott-Under-Wychwood station, about 2.5 miles north-west of the centre. Open spaces near Leafield include Blenheim Farm.
How to look after the new joints
After the cure time, these simple habits help:
- Deal with leaking gutters that soak the joints below
- Leave the joints unpainted unless we’ve said otherwise
- Never let anyone fill a movement joint with mortar
- Point out the joints to other trades
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.