Oxfordshire · England
Window & door mastic in Clifton, Oxfordshire
Our applicators work in Clifton on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly.
- Whistling draughts around closed windows
- Sealant in the wrong colour for the frame
- Old mastic that has gone black or come away
Clifton homes and the weather
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.
Around Clifton, as everywhere, window mastic is only as good as the preparation behind it.
Clifton is about 6 miles south-east of Banbury, in Oxfordshire. From the centre of Clifton to the outskirts, window mastic is available for homes and businesses alike. Our area takes in 443 places across Oxfordshire, from the larger towns to small villages. We also work in Oxford, around 16 miles away.
Our applicators cover all of the OX15 postcode area for window mastic. Local streets include County View, Tithe Lane and Clifton Road, and we cover them all. Other places close to Clifton include Somerton (2 miles south), Souldern (2 miles east), Fritwell (3 miles south-east) and Upper Heyford (4 miles south). Within a short drive, we also cover Banbury (6 miles north-west), Bicester (8 miles south-east), Kidlington (11 miles south), Bure Park (8 miles south-east), Chipping Norton (11 miles west) and Headington (15 miles south).
Local landmarks in Clifton
Typical jobs here are in homes near Duke Of Cumberlands Head Public House. Clifton’s nearest station is Kings Sutton station, about 2.7 miles north of the centre. Well-known places in the area include Horton General Hospital (5.3 miles north) and Deddington Castle (1.1 miles west).
Window mastic in Clifton
A window frame and the wall around it expand and shrink at different rates. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. If you have hard, cracked sealant around windows and rain getting in at the frame or under the sill, we can help.
Homes in small places like Clifton often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Place
- Clifton (OX15)
- Wider area
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the sealant goes in between frame and wall and tooled smooth.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We’ll tell you which suits your home.
Also near Clifton
Also in Clifton
What we can’t put right
In fairness, there are a few things sealant will not fix:
- A failed sealed unit that has misted up
- A door that needs adjusting, rehanging or new seals
- A frame that has rotted at the joint
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly before booking.
Where we work in Clifton
- Aluminium frames
- Timber windows & doors
- Window sills
- uPVC windows
- Composite doors
- Patio & French doors
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes most of a day for a typical house, less for a few frames. Somewhere like Clifton needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Let us know if you’ve seen damp or leaks
- Tell us about any previous sealing or DIY attempts
How to get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
Advice
DIY versus a professional finish
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Landlord and commercial work in Clifton
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
What we’re called out for in Clifton
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
It’s worth asking for a quote if you see:
- Draughty joints inside around the window
- Sealant in the wrong colour for the frame
- Gaps where the sill meets the wall
- Damp patches on the reveal after heavy rain
If you let a flat or house near Kings Sutton station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before booking
- What the quote includes, VAT included or not
- How the surfaces are prepared before sealing
- What happens if the job turns out different
- Which colour the sealant will be
Clifton questions
Can you help a landlord with a rental near Kings Sutton station?
Yes. We work for landlords and agents as well as householders. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover smaller places like Clifton?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll tell you what we are using.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Can you reach windows above the ground floor?
Yes, in most cases. We plan safe access before the job, so mention the height and anything in the way.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Can new sealant go over the old?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
How we quote for window mastic
Jobs vary more than people expect. The main factors:
- How much old sealant there is and how hard it is to remove
- The number and length of the joints
- Access and height
- Which sealant suits the joint
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, phone 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Helping us quote
Before you ask for a quote, have a think about:
- Whether it’s a home or a business
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, phone 0345 464 0079 or send us an email.