Oxfordshire · England
Sand mastic for sash & case windows in South Leigh, Oxfordshire
Problem with your window and door surrounds in South Leigh? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Gaps where the frame meets the masonry
- Draughts and rain around sash boxes
- Silicone on a period window that looks wrong
Common questions in South Leigh
Will you come out to South Leigh?
Yes, South Leigh is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover South Leigh for sand mastic?
Yes. Our work covers London and the South East, and South Leigh is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Where are you based?
We work from Crawley. Our applicators cover South Leigh.
Do I need permission for sand mastic on a listed building?
Yes, it’s worth checking. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
When will the new mastic be hard?
The surface skins quite quickly and it hardens fully over a longer time. The weather and joint depth both affect it.
Are you insured?
Yes. We’re fully insured.
Sand mastic in South Leigh
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. If you have mastic dropping out of the joint and modern sealant on a period surround, we can put it right.
In a village or hamlet like South Leigh, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
All our work is covered by a one-year guarantee.
- Where
- South Leigh (OX29)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of sand mastic
Your quote is based on your job. We take into account:
- Whether the work is at height
- Whether there’s mould to deal with
- How much there is to do
- Which sealant suits the joint
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Asking for a quote
When you call or email, it’s useful to know:
- The problem you’ve noticed
- If someone has resealed it before
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, phone 0345 464 0079 or email us.
Landlord and commercial work in South Leigh
For anyone letting property in or around South Leigh, several properties can go on one quote. Send us the addresses and the work at each, and photos by email help.
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Have rotten timber repaired before new mastic goes in
- Avoid heavy scraping on the mastic joint
- Don’t run silicone over sand mastic
- Plan mastic work ahead of painting
Don’t touch or press the mastic while it hardens. It skins over quickly but needs longer to fully harden.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
Honest limits
We will always be straight with you, so here’s what sealant cannot fix:
- Masonry that needs repairing
- Sashes that rattle, stick or will not open
- Planning or listed building consent (your local planning authority decides)
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before you book.
Where we work in South Leigh
- Brick reveals
- Period & listed homes
- Sash and case windows
- Tenement windows
- Timber door frames
- Stone surrounds
Nearby places to South Leigh
More services for South Leigh
How the visit works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself usually takes anything from a few hours to a full day, depending on how many windows, depending on the amount of work. For a village or hamlet like South Leigh, the journey is planned in advance: 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.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Mention if the joints have been sealed before
- Tell us if parking is tricky
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
We quote each job on its own. Just call 0345 464 0079 or drop us an email with the details.
Read more
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
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 doesn’t work out, we can still put it right.
Do you need sand mastic in South Leigh?
Water gets into small cracks in the mastic and pushes it out. Exposed elevations generally fail first.
Signs it’s time to call us include:
- Old sand mastic that has cracked, crumbled or fallen out
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
For site and facilities teams at buildings such as Wood Green School, its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- How the surfaces are prepared before sealing
- How hidden problems are handled
- Is VAT in the price?
- What guarantee comes with the work
Sand mastic in South Leigh: local notes
Rainfall in the South East is lower than in much 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 Minster Lovell Hall (about 4.6 miles west) nearby, there’s older building stock in the area around South Leigh as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
If you let a flat or house near Hanborough station, cracked sand mastic around sash windows lets in the draughts tenants complain about. For an older house near a landmark such as Church of St James, the joint between an old wall and a newer frame is normally the first place rain gets in.
South Leigh is about 3 miles east of Witney, in Oxfordshire. We carry out sand mastic for householders, landlords and businesses in South Leigh and nearby, as part of our work across Oxfordshire. We cover 443 towns and villages across Oxfordshire, from the larger towns to small villages. You can also see our page for Oxford, roughly 9 miles from South Leigh.
All of OX29 is covered for sand mastic, from the main roads to the quietest streets. We cover properties on Station Road, Church End and Chapel Road. If you’re just outside South Leigh, we cover High Cogges (1 mile west), Madley Park (2 miles north-west), Hardwick (2 miles south-west), Cogges (2 miles west) and Stanton Harcourt (2 miles south-east). Larger places within reach include Oxford (9 miles east), Didcot (14 miles south-east), Bicester (15 miles north-east), Abingdon-on-Thames (9 miles south-east), Witney (3 miles west) and Carterton (7 miles west).
Near you in South Leigh
The closest station to South Leigh is Hanborough station, about 4.1 miles north-east. Well-known places in the area include Cogges Manor Farm Museum (2.1 miles west).