Oxfordshire · England
Wendlebury Sand Mastic
Sand mastic across Wendlebury and nearby, with every bit of old sealant taken out first.
- Open joints round the window box
- Cracked mastic round a front door frame
- Tired mastic found when preparing windows for paint
Sand mastic in Wendlebury, done properly
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on stone surrounds, timber door frames and sash and case windows, and the jobs we see most are failed mastic on an exposed elevation and cracked mastic round a front door frame.
Mastic can only go onto a dry, clean joint, so window work in Wendlebury is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Wendlebury (OX25)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is usually favoured.
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Wendlebury homes and the weather
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of St Giles include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Bicester Village station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Wendlebury is about 2 miles south-west of Bicester, in Oxfordshire. Wherever you are in the OX25 postcode area, we cover sand mastic for homes and businesses. Across Oxfordshire, we cover 443 places, Wendlebury among them. We also work in Oxford, around 9 miles away.
Jobs for sand mastic in OX25 is quoted and booked the same way as anywhere else. Whether your property is on Church Lane, St Giles Close and Rectory Close or anywhere close by, we can help. If you are just outside Wendlebury, we cover Chesterton (1 mile north), Merton (2 miles south-east), Fencott (2 miles south-east), Charlton-on-Otmoor (2 miles south) and Ambrosden (3 miles east). Further out, we also cover Oxford (9 miles south), Banbury (15 miles north-west), Abingdon-on-Thames (14 miles south), Witney (14 miles south-west), Thame (13 miles south-east) and Kidlington (6 miles south-west).
Landmarks near Wendlebury
Typical jobs here are in homes near The Red Lion Public House. For rail, the closest station is Bicester Village station, about 2.1 miles north-east. Well-known places in the area include Bicester Community Hospital (2 miles north-east) and Ardley Castle (4.9 miles north). Green spaces nearby include Woodsides Meadow and Graven Hill.
Towns and villages near Wendlebury
What else we do in Wendlebury
The process
On the day, we start by going over the job with you. We protect the surfaces around the joints before any work starts. Most jobs take a few hours for a single window, longer for several. Somewhere as small as Wendlebury, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
How to get a quote
Need a quote? Please call 0345 464 0079 or email us with a few details. We will explain what we’d do and give you a clear price before any work starts.
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What affects the cost of sand mastic
Every job gets its own quote. This is what makes a difference:
- Working hours on commercial sites
- The type of sealant required
- Mould in or behind the old joints
- Access and height
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
What to tell us for a quote
You do not need to know the technical terms. Just tell us:
- Pictures of the joints, sent by email
- How we’d reach the joints
- Whether it’s a home or a business
- If someone has resealed it before
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or drop us an email.
Landlord and commercial work in Wendlebury
We work for letting agents and landlords as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Sashes that need overhauling
- Timber that has rotted
- Damaged stone surrounds
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Where we work in Wendlebury
- Period & listed homes
- Timber door frames
- Stone surrounds
- Tenement windows
- Brick reveals
- Sash and case windows
Common questions in Wendlebury
Do you cover smaller places like Wendlebury?
Yes, Wendlebury is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you cover Wendlebury for sand mastic?
Yes. We work across London and the South East, and Wendlebury is part of that. You can phone 0345 464 0079 or email us and let us know what needs doing, and we’ll send you a clear quote.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures.
Where are you based?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Are you insured?
Yes. Full insurance covers our work.
Do you offer different sealant colours?
Yes. White, clear and grey are common, and other colours are available, and we’ll agree it with you first.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Don’t run silicone over sand mastic
- Clear gutters so water does not pour onto the windows
- Have rotten timber repaired before new mastic goes in
- Do not paint over the new mastic
When preparing windows for paint, take care around the mastic. 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.