Oxfordshire · England
Sand mastic for sash & case windows in Aston, Oxfordshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Aston, with a 12-month guarantee on every job. Ask us for a quote.
- Mastic dropping out of the joint
- Gaps between timber frames and stone or brick
- Patchy fillers round a sash window
What affects the quote in Aston
We don’t publish a price list, because no two jobs are the same. What we look at:
- The old material and how stubborn it is
- Access and height
- How many areas need sealing
- Working hours on commercial sites
What you pay reflects the work, not guesswork. That is why we ask about the job first.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Whether it has been sealed before
- Whether it’s a home or a business
- What’s wrong with the joints now
- The rough size of the job
Every job is quoted individually. Simply call 0345 464 0079 or email us and describe the job.
Sand mastic for homes and businesses in Aston
Silicone on a period window often looks wrong and is not always the right material. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. We work on period & listed homes, sash and case windows and brick reveals, and people most often call us about draughty sash windows at the surround and old sand mastic that has cracked, crumbled or fallen out.
Around Aston, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Place
- Aston (OX18)
- Region
- Oxfordshire
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Aston
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Longworth House (about 3.4 miles south-east) are a reminder that the area around Aston has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For an older house near a landmark such as Church of St James, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Aston is about 4 miles south of Witney, in Oxfordshire. From the centre of Aston to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. 443 places in Oxfordshire are on our list. We also work in Oxford, about 12 miles from Aston.
Postcode districts we cover here for sand mastic: OX18. Whether your property is on Cote Road, Saxel Close and Woodbridge Close or anywhere close by, our applicators can take on the job. Neighbouring places we cover for sand mastic include Bampton (2 miles west), Weald (2 miles west), Curbridge (3 miles north), Black Bourton (4 miles west) and Clanfield (4 miles west). Larger places within reach include Oxford (12 miles east), Didcot (14 miles south-east), Abingdon-on-Thames (10 miles east), Witney (4 miles north), Carterton (5 miles north-west) and Wantage (10 miles south).
Landmarks near Aston
A little further out are Longworth Hospital (5.7 miles south-west) and Bampton Castle (2.1 miles west).
Nearby places to Aston
What else we do in Aston
What happens on the day
We keep the work tidy and contained to the area we’re working on, so you can carry on as normal. The job normally takes anything from a few hours to a full day, depending on how many windows, and we explain the cure time before we leave. Somewhere as small as Aston, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
How to get a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Advice
Landlords, agents and businesses in Aston
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
We also work for property managers and facilities teams in Aston and across Oxfordshire. Several sites can go on one quote.
Why act early in Aston
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. Around Aston, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Leaving a failed joint usually makes the job bigger, not smaller. If you are not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why Aston clients choose us
- An ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- Over 20 years’ experience
- Neat joints and a tidy finish
Read what affects the cost and our reviews.
Honest limits
It helps to know what we can’t do too:
- Broken panes
- Sash cords, weights and draught-proofing of the sashes
- Decisions on consent for listed homes
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
What we seal
- Sash and case windows
- Brick reveals
- Stone surrounds
- Tenement windows
- Period & listed homes
- Timber door frames
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Plan mastic work ahead of painting
- Check with your local planning authority if your home is listed
- Ask us before painting near the mastic
- Have rotten timber repaired before new mastic goes in
Avoid painting over the new mastic, as traditional guidance advises. Ask us before any decorating around it.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
When to call us in Aston
Water gets into small cracks in the mastic and pushes it out. Windows facing the weather tend to go first.
The problems people generally mention when they call are:
- Wind and rain getting in round a sash window
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps between timber frames and stone or brick
- Gaps round a timber door in stone or brick
For site and facilities teams at buildings such as Aston and Cote Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Before booking anyone
- Which sealant they’ll use, and why
- Whether they seal over old material or remove it
- How the joint is cleaned and prepared
- What guarantee comes with the work
FAQs for Aston
What guarantee comes with sand mastic in Aston?
All our work, in Aston and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Is Aston in your area for sand mastic?
Yes. Our work covers London and the South East, and Aston is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we will advise.
What does sand mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They’ll tell you if consent is needed for work to your windows.
Can new sealant go over the old?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
Is there any odour?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.