Oxfordshire · England
Sand Mastic in Brookhampton
Sand mastic for Brookhampton and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Silicone on a period window that looks wrong
- Gaps between timber frames and stone or brick
- Mastic worn away on windows facing the weather
Sand mastic in Brookhampton, done properly
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on sash and case windows, period & listed homes and tenement windows, and the jobs we see most are mastic dropping out of the joint and mastic worn away on windows facing the weather.
Around Brookhampton, 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.
There’s a 12-month guarantee on every job.
- Where
- Brookhampton (OX44)
- Region
- Oxfordshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Aftercare tips
To keep the joints looking good and working properly:
- Ask a joiner to look at soft timber first
- Do not paint over the new mastic
- Go gently near the mastic when preparing windows
- Plan mastic work ahead of painting
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Windows and doors in Brookhampton
With historic houses such as Garsington Manor (about 2.7 miles north-west) nearby, there’s older building stock in the area around Brookhampton as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
For an older house near a landmark such as Church of St John the Baptist, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Managing a site like Stadhampton Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Brookhampton is about 7 miles east of Abingdon-on-Thames, in Oxfordshire. Across the OX44 area, we cover sand mastic for homes and businesses. Brookhampton is one of 443 places in Oxfordshire where we work. There’s also a page for Oxford, about 7 miles away.
We work across the OX44 postcode area for sand mastic. If you need sand mastic at a property on Warren Hill, Newington Road and Newells Close or a nearby road, our applicators can take on the job. If you are just outside Brookhampton, we cover Stadhampton (1 mile north), Newington (1 mile south-east), Drayton St Leonard (1 mile south), Great Holcombe (1 mile south) and Berinsfield (2 miles south-west). Within a short drive, we also cover Oxford (7 miles north-west), Didcot (7 miles south-west), Bicester (15 miles north), Abingdon-on-Thames (7 miles west), Thame (8 miles north-east) and Wantage (14 miles south-west).
Near you in Brookhampton
Around Brookhampton, our work takes us to homes and buildings near The Bear And Ragged Staff Public House, among other places. Brookhampton’s nearest station is Radley station, about 4.8 miles west of the centre. A little further out are Brightwell Castle (4.8 miles south) and Aston Martin Heritage Trust Museum (1.3 miles south). For a walk, there’s Wells Farm and Wittenham Clumps.
The process
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take a few hours per window, depending on the condition of the joints. For a village or hamlet like Brookhampton, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
- Clear items away from the joints we’re working on
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Simply phone 0345 464 0079 or email us and describe the job, and photos are welcome.
Advice
What happens if it’s left?
If you’re redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. Where a wall is exposed, as many are in small places like Brookhampton, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us and we will talk you through it.
Why book with us
- Old sealant always removed completely
- Every job guaranteed for a year
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
Common problems we fix in Brookhampton
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Look out for these signs:
- Old cement repairs round a window that have failed
- Window mastic to renew ahead of painting
- Open joints round the window box
- Cracked mastic round a front door frame
Letting a property close to Radley station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- The length of the guarantee
- What insurance they hold
- When the joint can take water or movement
- What happens if the job turns out different
What affects the cost of sand mastic
We don’t publish a price list. The quote depends on:
- How many rooms, windows or areas are involved
- How much there is to do
- Whether there’s mould to deal with
- Working hours on commercial sites
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
What to tell us for a quote
To help us quote quickly, please include:
- The address or postcode of the job
- Access, such as stairs, a lift or height
- If someone has resealed it before
- Roughly how big the job is
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.
What the job involves on each surface
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we will confirm what’s needed.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
Also near Brookhampton
Other services in Brookhampton
Brookhampton questions
I let a flat near Radley station. Can you help?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Will you come out to Brookhampton?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
How long does sand mastic take to go off?
It skins over fairly quickly but takes longer to harden fully. We’ll tell you what to expect for your job.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.