Oxfordshire · England
Steeple Aston Window Mastic
Window mastic across Steeple Aston and nearby, with old sealant always removed completely.
- Black, perished sealant on frames
- Gaps left after new windows were fitted
- A bead that doesn’t match the frame
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Keep solvents and bleach off the sealant
- Keep jet washers away from the mastic
- Paint up to the joint, not over it
- Look round the frames every year or so
Timber frames need their paint kept up, since wood that gets wet swells and shrinks more. Keep paint off the silicone itself.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Window mastic in Steeple Aston, done properly
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. If you have draughts coming in around windows and doors and mastic that’s falling out in pieces, we can help, on composite doors, timber windows & doors and aluminium frames alike.
In a village or hamlet like Steeple Aston, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Steeple Aston (OX25)
- Wider area
- Oxfordshire
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Window mastic in Steeple Aston: local notes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near Heyford station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Homes close to Church of St Peter and St Paul include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Dr Radcliffe's Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Steeple Aston is about 7 miles west of Bicester, in Oxfordshire. We carry out window mastic for homes and businesses in Steeple Aston and nearby. Steeple Aston is one of 443 places in Oxfordshire we cover for window mastic. You can also see our page for Oxford, about 13 miles away.
Jobs for window mastic in OX25 is quoted and booked the same way as anywhere else. Streets in the area include Jubilee Close, Paines Hill and North Side. Neighbouring places we cover for window mastic include Middle Aston (1 mile north), Steeple Barton (2 miles west), Duns Tew (2 miles north-west), North Aston (2 miles north) and Dane Hill (2 miles north). We also work in nearby towns such as Oxford (13 miles south), Banbury (9 miles north), Bicester (7 miles east), Witney (12 miles south-west), Kidlington (8 miles south) and Headington Quarry (13 miles south).
Local landmarks in Steeple Aston
Locally, jobs take us to homes and businesses close to White Lion pub and the streets around them. For rail, the closest station is Heyford station, roughly 0.9 miles south-east. Well-known places in the area include Deddington Castle (3.6 miles north).
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
When something else is needed
It helps to know what we can’t do too:
- Draughts through the window seals rather than the frame
- A failed sealed unit that has misted up
- Damp coming through the wall itself rather than the frame joint
If in doubt, call 0345 464 0079 or email us and we will say what we think before booking.
Joints and surfaces we work on
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Patio & French doors
- Window sills
- Composite doors
Nearby places to Steeple Aston
Other services in Steeple Aston
How the visit works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. For a village or hamlet like Steeple Aston, the journey is planned in advance: 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.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Clear the area around the work
- Let us know about stairs, lifts or work at height
How to get a quote
Every job is quoted individually. Simply ring 0345 464 0079 or send us an email and describe the job and send photos if you have them.
Related advice
Surface by surface
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour suits the frame.
Timber windows & doors
Timber moves with moisture as well as heat, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.
Common questions in Steeple Aston
Do you cover smaller places like Steeple Aston?
Yes. Steeple Aston is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Heyford station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Are you fully insured?
Yes. We’re fully insured for every job we do.
How long should I leave it?
It depends on the product. We tell you how long to leave it before we go.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
Do you work on first-floor windows?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote and we will plan for it.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Leave it or put it right?
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. In a small place like Steeple Aston, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Doing several joints on one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why us?
- 20+ years of sealant experience
- We agree the colour with you first
- Approved under the ARBOMaster scheme
- Sealant colour chosen to suit
Take a look at our cost guide or customer reviews.
What affects the cost of window mastic
The quote reflects the job in front of us. We take into account:
- How many areas need sealing
- The number and length of the joints
- Which sealant suits the joint
- Any mould that needs treating
What you pay reflects the work, not guesswork. That is why we ask a few questions first.
What to tell us for a quote
To help us quote quickly, please include:
- How many joints, rooms or windows are involved
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- What’s wrong with the joints now
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or send us an email.