Oxfordshire · England
Souldern Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Souldern, backed by a 12-month guarantee. Call for a quick quote.
- Crumbling sand mastic round a window
- Tired mastic found when preparing windows for paint
- Mastic round period door frames that has failed
How we handle sand mastic in Souldern
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, applied by hand. On older homes, it suits the building far better than silicone. If you have gaps where the frame meets the masonry and wind and rain getting in round a sash window, we can help.
Around Souldern, 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.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Where
- Souldern (OX27)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
When it isn’t the sealant
We’d rather tell you now than do work that won’t last, so these are the limits:
- Broken panes
- Masonry that needs repairing
- Planning or listed building consent (your local planning authority decides)
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before booking.
What we seal
- Period & listed homes
- Brick reveals
- Tenement windows
- Timber door frames
- Sash and case windows
- Stone surrounds
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Make sure water runs off the sill
- Find out about consent before window work on a listed home
- Keep modern sealant off the mastic
- Leave the new mastic unpainted
Avoid painting over the new mastic, which is the traditional advice. If you are redecorating, ask us first.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
Souldern questions
Can you do sand mastic in Souldern?
Yes, Souldern is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Will you come out to Souldern?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Is sand mastic better than silicone for my windows?
We’ll help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Is it messy?
We keep the work tidy. We protect what’s around the joints.
Can you seal over the old sealant?
No, because it fails. The old sealant always comes out first.
Can I do it myself?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
More services for Souldern
What sand mastic looks like in Souldern
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near Church of the Annunciation to the Blessed Virgin Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
Souldern is in Oxfordshire. We carry out sand mastic for householders, landlords and businesses in Souldern and the surrounding area, as part of our work across Oxfordshire. Our Oxfordshire coverage runs to 443 places, Souldern among them. There’s also a page for Oxford, roughly 16 miles from Souldern.
Here we cover the OX27 postcode area for sand mastic. We cover properties on High Street, Foxhill Lane and Fox Lane and the roads around them. If you’re just outside Souldern, we cover Fritwell (1 mile south), Clifton (2 miles west), Somerton (2 miles south-west) and Fewcott (3 miles south-east). Further out, we also cover Banbury (7 miles north-west), Bicester (6 miles south-east), Kidlington (11 miles south), Headington Quarry (15 miles south), Bure Park (6 miles south-east) and Chipping Norton (13 miles west).
What’s near Souldern
Around Souldern, our work takes us to homes and buildings near The Fox pub. For rail, the closest station is Kings Sutton station, roughly 3.4 miles north-west. A little further out are Brackley Community Hospital (5.5 miles north-east) and Ardley Castle (2.7 miles south-east).
The process
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. For a village or hamlet like Souldern, 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.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Clear items away from the joints we’re working on
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
Getting a quote
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before any work starts.
Related advice
How we quote for sand mastic
We don’t publish a price list. What we look at:
- The number of rooms or windows
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- The size of the job
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- If someone has resealed it before
If you are in Souldern and need sand mastic, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
Why it’s worth doing now in Souldern
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in and new mastic seals them. Where a wall is exposed, as many are in small places like Souldern, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost depends on the amount of work, how much old material has to come out and access to the work. You will have a clear quote before any work starts, so you know where you stand.
What you get with us
- An ARBOMaster approved applicator
- Homes, businesses and hotels
- Tidy, careful work
- Full insurance on every job
See what affects the cost and what customers say.
What we are called out for in Souldern
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Keep an eye out for these signs:
- Cement or filler used on old window joints that has cracked
- Open joints round the window box
- Crumbling sand mastic round a window
- Weathered mastic on the most exposed windows
Rented homes near Kings Sutton station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- What the quote includes, VAT included or not
- The length of the guarantee
- When the joint can take water or movement
- Are they insured?