Oxfordshire · England
Sand Mastic in Horton-cum-Studley
We cover Horton-cum-Studley for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Crumbling sand mastic round a window
- Cracked mastic round a front door frame
- Open joints round the window box
Sand mastic in Horton-cum-Studley, 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 made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on timber door frames, sash and case windows and stone surrounds, and people most often call us about old cement repairs round a window that have failed and mastic round period door frames that has failed.
Around Horton-cum-Studley, 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.
Your job is guaranteed for a year, as with all our work.
- Location
- Horton-cum-Studley (OX33)
- Wider area
- Oxfordshire
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What we are called out for in Horton-cum-Studley
Age is the main cause. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
It’s worth asking for a quote if you see:
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
- Draughty sash windows at the surround
- Crumbling sand mastic round a window
If you let a flat or house near Islip station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- How much experience the applicator has
- What guarantee comes with the work
- When the joint can take water or movement
- How the joint is cleaned and prepared
Also near Horton-cum-Studley
More services for Horton-cum-Studley
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Leave the new mastic unpainted
- Take care around the mastic when scraping paint
- Get any rot dealt with first
- Keep modern sealant off the mastic
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
An open joint round the box lets weather through. Left, the gap tends to get bigger.
Horton-cum-Studley 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. With historic houses such as Boarstall Tower (about 2.2 miles north-east) nearby, there’s older building stock in the area around Horton-cum-Studley as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near Church of St Barnabas, the joint between an old wall and a newer frame is usually the first place rain gets in.
Horton-cum-Studley is about 6 miles north-east of Oxford, in Oxfordshire. Jobs in Horton-cum-Studley get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Horton-cum-Studley is one of 443 towns and villages in Oxfordshire we cover for sand mastic. We also work in Oxford, about 6 miles from Horton-cum-Studley.
Here we cover the OX33 postcode area for sand mastic. Sand mastic is available to properties on The Green, Church Lane and Oakley Road and the roads around them. Other places close to Horton-cum-Studley include Murcott (2 miles north), Fencott (3 miles north-west), Charlton-on-Otmoor (3 miles north-west), Upper Arncott (3 miles north) and Merton (3 miles north). We also work in nearby towns such as Oxford (6 miles south-west), Didcot (14 miles south), Bicester (7 miles north), Abingdon-on-Thames (11 miles south-west), Witney (15 miles west) and Thame (8 miles south-east).
Around Horton-cum-Studley
We work in homes and buildings around Katie and George Park. The closest station to Horton-cum-Studley is Islip station, about 4.4 miles west of the centre. A little further out are Churchill Hospital (4.5 miles south-west). Green spaces nearby include Shotover and Bernwood Meadows.
When it is not the sealant
New sealant can’t fix everything, and we will tell you before work begins. It will not solve:
- Cracked or broken glass
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
If in doubt, phone 0345 464 0079 or email us and we will say what we think before you book.
Where we work in Horton-cum-Studley
- Stone surrounds
- Period & listed homes
- Brick reveals
- Sash and case windows
- Tenement windows
- Timber door frames
Questions from Horton-cum-Studley
Can you do sand mastic in Horton-cum-Studley?
Yes, Horton-cum-Studley is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Can you help a landlord with a rental near Islip station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
How long does sand mastic take to harden?
It takes a while. It skins first and hardens fully later and we’ll give you an idea for your job.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
What exactly is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and shaped to suit the surround.
Can you replace silicone on a period window with sand mastic?
Normally, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Is the work guaranteed?
Our 12-month guarantee applies to all our work.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Different surfaces, different methods
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we’ll confirm what’s needed.
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
For landlords and businesses
If you manage several properties in or around Horton-cum-Studley, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Housing providers, facilities teams and property managers book us too in Horton-cum-Studley and across Oxfordshire. Several sites can be quoted together, and we’re fully insured.
How the visit works
There is not much for you to do on the day. Show us the job and we will take it from there. The job generally takes anything from a few hours to a full day, depending on how many windows, including the tidy-up. In a small place like Horton-cum-Studley, access is generally the main thing to plan. 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.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Mention if the joints have been sealed before
- Clear items away from the joints we are working on
Ask for a quote
If you are in Horton-cum-Studley and need sand mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.
Read more
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
Sealing over old silicone is the commonest DIY error. 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.