Oxfordshire · England
Sand Mastic in South Weston
Window and door surrounds in South Weston need attention? We cut out the old, prepare the joints and apply the right sealant.
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
- Draughts and rain around sash boxes
South Weston: your questions answered
What guarantee comes with sand mastic in South Weston?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Will you come out to South Weston?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours per window, depending on the condition of the joints. We will give you a better idea when we quote.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Can you match the sealant colour?
We will suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.
Do you remove the old sealant?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Sand mastic for homes and businesses in South Weston
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. We rake it out and renew it so the surround looks right again. We work on stone surrounds, brick reveals and period & listed homes, and the jobs we see most are wind and rain getting in round a sash window and failed mastic on an exposed elevation.
Around South Weston, 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.
All our work comes with our 12-month guarantee.
- Location
- South Weston (OX9)
- Wider area
- Oxfordshire
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
Sealant isn’t the answer to every problem, and we’ll tell you before we start. Sealant will not put right:
- Crumbling stone or brickwork round the window
- Decayed frames that need repair
- Sashes that need overhauling
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
What we seal
- Sash and case windows
- Tenement windows
- Period & listed homes
- Brick reveals
- Timber door frames
- Stone surrounds
South Weston homes and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Adwell House (about 0.9 miles north) are a reminder that the area around South Weston has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Homes close to St Lawrence include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in.
South Weston is about 5 miles south of Thame, in Oxfordshire. Our applicators cover sand mastic for homes and businesses in South Weston and nearby, as part of our work across Oxfordshire. South Weston is one of 443 places in Oxfordshire we cover. Oxford is on our list too, about 12 miles from South Weston.
All of OX9 is covered for sand mastic, from the main roads to the quietest streets. If you need sand mastic at a property on Weston Road and Rectory Lane or a nearby road, we can help. Close by, we work in Lewknor (1 mile south-east), Postcombe (1 mile north-east), Shirburn (2 miles south), Aston Rowant (2 miles east) and Kingston Blount (2 miles east). Larger places within reach include Oxford (12 miles north-west), Didcot (12 miles south-west), Abingdon-on-Thames (13 miles west), Thame (5 miles north), Henley-on-Thames (11 miles south) and Benson (6 miles south-west).
Near you in South Weston
We work in homes and buildings around Ye Olde Leathern Bottle Public House and Icknield Community College. Well-known places in the area include Thame Community Hospital (4.6 miles north). For a walk, there’s Bald Hill and Aston Rowant NNR.
Also near South Weston
More services for South Weston
Why deal with it now?
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad, and renewing the mastic closes them. Where a wall is exposed, as many are in small places like South Weston, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why book with us
- Quality sealants from Arbo and Everbuild
- Every job guaranteed for a year
- Over 20 years’ experience
- Anti-fungal silicone where joints get wet
How we quote for sand mastic
You’ll get a clear quote before we start. It takes into account:
- Mould in or behind the old joints
- Working hours on commercial sites
- The old material and how stubborn it is
- Whether the work is at height
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email.
What to tell us for a quote
Photos by email are helpful but not essential. Please mention:
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- Whether it’s a home or a business
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or email us.
Do you need sand mastic in South Weston?
Age is the main cause. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
It’s worth asking for a quote if you see:
- Old cement repairs round a window that have failed
- Crumbling sand mastic round a window
- Gaps round a timber door in stone or brick
- Gaps where the frame meets the masonry
Schools such as Lewknor Church of England Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Questions to ask before you book
- What preparation is included
- How long to leave it before use
- Whether they’re fully insured
- How the colour is chosen
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Get any rot dealt with first
- Check with your local planning authority if your home is listed
- Look over the window mastic once a year
- Keep sills and gutters clear so water drains away
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
How it works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. 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 South Weston, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Let us know about parking restrictions
- For business premises, tell us about site rules or sign-in
- Mention if the joints have been sealed before
Getting a quote
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.