Oxfordshire · England
Window Mastic in Weston-on-the-Green
Specialist window mastic for Weston-on-the-Green: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Hard, cracked sealant around windows
- Draughty joints inside around the window
- Damp patches on the reveal after heavy rain
Common problems we fix in Weston-on-the-Green
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
If you can see any of these, it’s time to have the joints looked at:
- Draughts coming in around windows and doors
- Damp patches on the reveal after heavy rain
- Gaps where the sill meets the wall
- Cracked or shrunken mastic around the frame
Homes close to Church of St Mary include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before booking
- Is VAT in the price?
- What happens if they find a problem under the old sealant
- Who turns up on the day
- How long to leave it before use
Window mastic in Weston-on-the-Green
The new joint doesn’t have to be white. We can seal in white, brown, anthracite grey, black or clear, so the bead blends with the window rather than framing it. If you have old mastic that has gone black or come away and leaking joints at the ends of sills, we can help, on patio & French doors, aluminium frames and window sills alike.
Mastic can only go onto a dry, clean joint, so window work in Weston-on-the-Green is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
A one-year guarantee comes as standard, so you’re covered after we’ve gone.
- Location
- Weston-on-the-Green (OX25)
- Wider area
- Oxfordshire
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
Housing providers, facilities teams and property managers book us too in Weston-on-the-Green and across Oxfordshire. We can quote a run of properties together, and we are fully insured for the work.
The process
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. It generally takes most of a day for a typical house, less for a few frames. For a village or hamlet like Weston-on-the-Green, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look at every frame and agree the list.
- 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.
- We clear up and check every joint is fully closed.
How to prepare
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
- Keep children and pets away from the work area
Getting a quote
Every job is quoted individually, so start by telling us what you need. Simply phone 0345 464 0079 or send us an email and describe the job and send photos if you have them.
Advice
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Weston-on-the-Green homes and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Islip station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Weston-on-the-Green is about 4 miles south-west of Bicester, in Oxfordshire. Jobs in Weston-on-the-Green get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. 443 places in Oxfordshire are on our list, from the larger towns to small villages. Oxford is on our list too, around 8 miles away.
We work across OX25 for window mastic and the streets around it. We cover properties on Church Road, Blacksmiths Close and Westlands Avenue. Other places close to Weston-on-the-Green include Weston Otmoor (1 mile east), Bletchingdon (2 miles west), Kirtlington (2 miles west), Hampton Poyle (3 miles south-west) and Islip (3 miles south). Larger places within reach include Oxford (8 miles south), Banbury (15 miles north), Bicester (4 miles north-east), Abingdon-on-Thames (13 miles south), Witney (12 miles south-west) and Thame (14 miles south-east).
Around Weston-on-the-Green
The nearest railway station is Islip station, roughly 2.7 miles south. Well-known places in the area include Bicester Community Hospital (3.7 miles north-east) and Bicester Avenue (3.2 miles north-east). Green spaces nearby include Woodsides Meadow and Graven Hill.
Also near Weston-on-the-Green
More services for Weston-on-the-Green
What the job involves on each surface
Composite doors
An exposed front door gets wind-driven rain. We pay most attention there.
Patio & French doors
Heavy door frames can move more than windows. The sealant must cope with it without cracking.
Questions from Weston-on-the-Green
I let a flat near Islip station. Can you help?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Is Weston-on-the-Green within the area you cover?
Yes. Weston-on-the-Green 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.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you do upstairs windows?
Yes, as long as they can be reached safely. Tell us about access when you get in touch and we’ll plan for it.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.
Where are you based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Do you take out the old sealant first?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Aftercare tips
Joint life depends on how it’s used and looked after. We suggest:
- Look round the frames every year or so
- Keep drainage slots and sill grooves clear
- Keep timber frames painted
- Clean frames with a soft cloth and soapy water
Wipe the frames with soapy water when you clean the windows, and keep solvents and harsh chemicals off the joint.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
Why it’s worth doing now in Weston-on-the-Green
Not every sealant suits a window. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. An exterior, low-modulus sealant stays flexible in sun and frost. In a small place like Weston-on-the-Green, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Weston-on-the-Green
- Experience in homes, commercial sites and hotels
- Sealant colour chosen to suit
- Every job guaranteed for a year
- Neat joints and a tidy finish
See our cost guide and our reviews.