Oxfordshire · England
Sand mastic for sash & case windows in Upper Arncott, Oxfordshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Upper Arncott. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- A silicone bead on a sash window that spoils the look
- Mastic that needs renewing before redecorating
- Mastic worn away on windows facing the weather
Sand mastic for homes and businesses in Upper Arncott
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. We work on stone surrounds, period & listed homes and sash and case windows, and people most often call us about old cement repairs round a window that have failed and a silicone bead on a sash window that spoils the look.
In a village or hamlet like Upper Arncott, 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 there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Place
- Upper Arncott (OX25)
- Wider area
- Oxfordshire
- Cover
- One year on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Take care around the mastic when scraping paint
- Leave the new mastic unpainted
- Renew mastic before redecorating the windows
- Inspect the joints round the windows every year or so
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
What happens if it’s left?
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Around Upper Arncott, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Why book with us
- We leave the area clean and tidy
- Experience in homes, commercial sites and hotels
- 12-month guarantee on every job
- 4.9 on Google from 180+ five-star reviews
Take a look at how sealant jobs are priced or what customers say.
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
If you manage several properties in or around Upper Arncott, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
How the visit works
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours per window, depending on the condition of the joints. For a village or hamlet like Upper Arncott, 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.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about stairs, lifts or work at height
Get a quote
For sand mastic in Upper Arncott, call 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Related advice
FAQs for Upper Arncott
I let a flat near Bicester Village station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Is Upper Arncott within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
What exactly is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and finished to sit neatly against the masonry.
How long will you be here?
It depends on the size of the job, but most jobs take a few hours for a single window, longer for several. We’ll tell you when we quote.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we’ll talk you through it.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Can I add another job to the visit?
Yes, we can. More than one area can be quoted together.
Is the work guaranteed?
Our 12-month guarantee applies on every job.
Should I try it myself first?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What affects the cost of sand mastic
Call for a quick quote. The main things that affect it are:
- Access and height
- Whether old sealant or filler has to be cut out
- The type of sealant required
- Mould in or behind the old joints
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and send you a clear quote before we start.
Helping us quote
When you call or email, it’s useful to know:
- The address or postcode of the job
- How we’d reach the joints
- The problem you’ve noticed
- The rough size of the job
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job.
Also near Upper Arncott
Other services in Upper Arncott
What sand mastic looks like in Upper Arncott
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Boarstall Tower (about 2 miles south-east) are a reminder that the area around Upper Arncott 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.
Historic houses such as Boarstall Tower, about 2 miles south-east, show how far back building around Upper Arncott goes, and older homes nearby need a sealant that suits their walls. If you let a flat or house near Bicester Village station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Upper Arncott is about 4 miles south-east of Bicester, in Oxfordshire. Every kind of property in Upper Arncott can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Our Oxfordshire coverage runs to 443 places, and Upper Arncott is one of them. Our Oxford page covers work nearby.
Every address in OX25 is covered for sand mastic, from the main roads to the quietest streets. Sand mastic is available to properties on Hopcraft Close, Murcott Road and Teale Close and the roads around them. If you’re just outside Upper Arncott, we cover Lower Arncott (1 mile north), Ambrosden (1 mile north), Murcott (2 miles south-west), Merton (2 miles west) and Fencott (2 miles west). Within a short drive, we also cover Oxford (8 miles south-west), Bicester (4 miles north-west), Abingdon-on-Thames (14 miles south-west), Thame (9 miles south-east), Kidlington (8 miles west) and Chinnor (14 miles south-east).
Landmarks near Upper Arncott
Locally, jobs take us to homes and businesses close to The Plough pub, among other places. The closest station to Upper Arncott is Bicester Village station, about 3.3 miles north-west of the centre. A little further out are Bicester Community Hospital (3.7 miles north-west) and Bicester Village (3.4 miles north-west). Green spaces nearby include Otmoor RSPB reserve and Graven Hill.
What we cannot put right
Before you book, it’s worth knowing the limits:
- Crumbling stone or brickwork round the window
- Timber that has rotted
- Decisions on consent for listed homes
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Period & listed homes
- Tenement windows
- Timber door frames
- Sash and case windows
- Brick reveals
- Stone surrounds