Oxfordshire · England
Sand mastic for sash & case windows in Upper Brailes, Oxfordshire
Our applicators work in Upper Brailes on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.
- Mastic that needs renewing before redecorating
- Patchy fillers round a sash window
- Gaps between timber frames and stone or brick
What we do, step by step
On the day, we look over the joints with you first. Surfaces next to the work are protected before any work starts. The work usually takes a few hours per window, depending on the condition of the joints. Somewhere like Upper Brailes needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
Getting a quote
We don’t publish a price list. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or email us.
Related advice
How we handle sand mastic in Upper Brailes
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. Typical jobs include draughts and rain around sash boxes and open joints round the window box, across tenement windows, timber door frames and brick reveals.
Somewhere as small as Upper Brailes, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Place
- Upper Brailes (OX15)
- Region
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How the job changes by surface
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is generally favoured.
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Nearby places to Upper Brailes
What else we do in Upper Brailes
Landlords, agents and businesses in Upper Brailes
Landlords and letting agents in Upper Brailes can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for.
For anyone letting property in or around Upper Brailes, several properties can be quoted together. Just tell us the addresses and what each one needs.
When to call us in Upper Brailes
Timber frames move with the seasons. That movement opens up the mastic joint over time.
It’s worth asking for a quote if you see:
- Crumbling sand mastic round a window
- Old cement repairs round a window that have failed
- Mastic that needs renewing before redecorating
- Gaps between timber frames and stone or brick
Homes close to Church of St George include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- Who turns up on the day
- What insurance they hold
- How the colour is chosen
- When the joint can take water or movement
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Find out about consent before window work on a listed home
- Take care around the mastic when scraping paint
- Don’t run silicone over sand mastic
- Sort the mastic before the decorators arrive
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
FAQs for Upper Brailes
Is Upper Brailes in your area for sand mastic?
Yes. Our work covers London and the South East, and Upper Brailes is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Is there a guarantee on sand mastic in Upper Brailes?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we will talk you through it.
Do you work for letting agents?
Yes, we do. Domestic, commercial and hotel work are all part of what we do.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first, so the new joint bonds to clean surfaces.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
How long does sand mastic take to go off?
The surface skins quite quickly, then hardens over a longer period. Timing depends on the weather and the joint.
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What sealant work can’t fix
Before booking, it’s worth knowing the limits:
- Timber that has rotted
- Crumbling stone or brickwork round the window
- Sashes that rattle, stick or will not open
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.
Joints and surfaces we work on
- Sash and case windows
- Period & listed homes
- Timber door frames
- Tenement windows
- Stone surrounds
- Brick reveals
Sand mastic in Upper Brailes: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Brailes CofE Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Upper Brailes is about 9 miles west of Banbury, in Oxfordshire. We carry out sand mastic for homes and businesses in Upper Brailes and nearby. Across Oxfordshire, we cover 443 places, Upper Brailes among them. For nearby work, see our Oxford page.
Work in OX15 works the same way as everywhere else we cover. If you need sand mastic at a property on Castle Hill, Fant Hill and Henbrook Lane or a nearby road, our applicators can take on the job. Neighbouring places we cover for sand mastic include Lower Brailes (1 mile south-east) and Sutton-under-Brailes (2 miles south). We also work in nearby towns such as Banbury (9 miles east), Chipping Norton (8 miles south), Neithrop (8 miles east), Grimsbury (10 miles east), Ruscote (8 miles east) and Bloxham (8 miles east).
What’s near Upper Brailes
We work in homes and buildings around The Gate Inn and the streets around them. Other landmarks nearby include Ellen Badger Hospital (2.9 miles west). Green spaces nearby include Castle Hill and Woodford Bottom and Lamb's Pool.