Oxfordshire · England
Ewelme Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Ewelme and across Oxfordshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps left after new windows were fitted
- Cracked or shrunken mastic around the frame
- Cracked internal joints between frame and plaster
Window mastic in Ewelme, done properly
Homes in Ewelme have every kind of window: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. We work on patio & French doors, timber windows & doors and composite doors, and people most often call us about a bead that doesn’t match the frame and cracked internal joints between frame and plaster.
Mastic can only go onto a dry, clean joint, so window work in Ewelme is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
You’re covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or drop us an email.
- Place
- Ewelme (OX10)
- Region
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Ewelme homes and the weather
Historic houses like Brightwell Manor (about 4.2 miles west) are a reminder that the area around Ewelme has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to Church of St Mary include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Ewelme is about 8 miles east of Didcot, in Oxfordshire. Ewelme gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. 443 places in Oxfordshire are on our list. You can also see our page for Oxford, roughly 11 miles from Ewelme.
Jobs for window mastic in OX10 is quoted and booked the same way as anywhere else. If you need window mastic at a property on High Street, Parson's Lane and Burrows Hill or anywhere close by, we can help. Close by, we work in Roke (2 miles north-west), Britwell Salome (2 miles north-east), Brightwell Baldwin (2 miles north), Watlington (3 miles north-east) and Chalgrove (3 miles north). Larger places within reach include Oxford (11 miles north-west), Didcot (8 miles west), Abingdon-on-Thames (10 miles north-west), Thame (10 miles north-east), Wantage (15 miles west) and Henley-on-Thames (9 miles south-east).
Near you in Ewelme
Around Ewelme, our work takes us to homes and buildings near The Greyhound At Ewelme Public House and the streets around them. A little further out are Wallingford Castle (2.5 miles south-west). Open spaces near Ewelme include Ewelme Watercress Beds and Wittenham Clumps.
How the job changes by surface
Composite doors
An exposed front door gets wind-driven rain. We pay most attention there.
Window sills
The end joints of a sill tend to fail before the rest. A tight seal at each end keeps rain out of the wall.
Places near Ewelme
What else we do in Ewelme
Common questions in Ewelme
Is there a guarantee on window mastic in Ewelme?
All our work, in Ewelme and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Do you cover smaller places like Ewelme?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do several jobs on one visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used before we leave.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Will new mastic stop draughts?
Yes, if the air is getting in around the frame. If it’s through the window’s own seals or a hinge, that is a different fix, and we’ll say so.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep solvents and bleach off the sealant
- Check the mastic once a year
- Keep timber frames painted
- Clean frames with a soft cloth and soapy water
Clean the frames with mild soapy water, and keep solvents and harsh chemicals off the joint.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. Resealing closes it.
Landlord and commercial work in Ewelme
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
What affects the cost of window mastic
The quote reflects the job in front of us. We look at:
- How many areas need sealing
- The product the joint needs
- Any working-time requirements on site
- Any mould that needs treating
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What we need to know
When you contact us, these details help:
- The address or postcode of the job
- Whether it has been sealed before
- The type of property
- Photos by email, if that’s easy
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or send us an email.
The process
There is not much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes a few hours for a few frames, or a day or more for a whole house, including the tidy-up. Somewhere like Ewelme needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Let us know about earlier repairs to the joints
How to get a quote
Want a quote for window mastic? Please call 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
What we’re called out for in Ewelme
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and the wood moves with damp as well as heat.
It’s worth asking for a quote if you see:
- Rain getting in at the frame or under the sill
- Cracked or shrunken mastic around the frame
- Draughts coming in around windows and doors
- Rushed sealant from a window installation
If you look after a building such as Ewelme CofE Primary School, the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- What guarantee comes with the work
- What the quote includes, VAT included or not
- What happens if they find a problem under the old sealant
- Who turns up on the day