Oxfordshire · England
Ewelme Sand Mastic
Professional sand mastic in and around Ewelme, with every bit of old sealant taken out first and a 12-month guarantee.
- Mastic worn away on windows facing the weather
- Mastic round period door frames that has failed
- Modern sealant on a period surround
Sand mastic in Ewelme, done properly
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. Common call-outs are for tired mastic found when preparing windows for paint and mastic worn away on windows facing the weather, across brick reveals, stone surrounds and sash and case windows.
In a village or hamlet like Ewelme, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or send us an email.
- Place
- Ewelme (OX10)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens if it’s left?
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. Around Ewelme, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email.
Why us?
- We never seal over old sealant
- Homes, businesses and hotels
- We leave the area clean and tidy
- A 12-month guarantee on all work
Take a look at what affects the cost and our reviews.
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured.
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Do not paint over the new mastic
- Find out about consent before window work on a listed home
- Look over the window mastic once a year
- Keep modern sealant off the mastic
Leave the new mastic alone while it firms up. It skins over quickly but needs longer to fully harden.
An open joint round the box lets weather through. Left, the gap tends to get bigger.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to a full day, depending on how many windows and we leave things clean and tidy. In a small place like Ewelme, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Mention any parking rules near the property
- For indoor joints, keep the area dry beforehand if you can
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To get started, call 0345 464 0079 or drop us an email.
Read more
Frames and glazing around Ewelme
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. With historic houses such as Brightwell Manor (about 4.2 miles west) nearby, there’s older building stock in the area around Ewelme as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Managing a site like Ewelme CofE Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Ewelme is about 8 miles east of Didcot, in Oxfordshire. Anywhere in OX10, our applicators can take on sand mastic. 443 places in Oxfordshire are on our list, from the larger towns to small villages. We also work in Oxford, about 11 miles from Ewelme.
All of OX10 is within our area for sand mastic. Local streets include High Street, Parson's Lane and Burrows Hill, and we cover them all. If you’re just outside Ewelme, we cover 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).
What’s near Ewelme
Typical jobs here are in homes near The Greyhound At Ewelme Public House and the streets around them. Nearby you’ll also find Wallingford Castle (2.5 miles south-west). For a walk, there’s Ewelme Watercress Beds and Wittenham Clumps.
Different surfaces, different methods
Sash and case windows
A sash window’s box frame sits in the masonry opening. Sand mastic seals the joint round it.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We work on single windows or whole elevations.
FAQs for Ewelme
Can you do sand mastic in Ewelme?
Yes. Our work covers London and the South East, and Ewelme is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing, and we’ll send you a clear quote.
Is Ewelme within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Can you quote for more than one area?
Yes. Just list everything you need and you’ll get one quote.
How long does the job take?
It depends on the size of the job, but most jobs take anything from a few hours to a full day, depending on how many windows. We will give you a better idea when we quote.
Do you have insurance?
Yes. We’re fully insured, and we have been doing sealant work for more than 20 years.
Should I check with the council before work on a listed or conservation-area home?
Your local planning authority is the one to ask. They’ll tell you if consent is needed for work to your windows.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
When something else is needed
Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:
- Timber that has rotted
- Sash cords, weights and draught-proofing of the sashes
- Whether work needs listed building consent
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
What we seal
- Tenement windows
- Stone surrounds
- Brick reveals
- Period & listed homes
- Timber door frames
- Sash and case windows