Oxfordshire · England
Sand Mastic in Alvescot
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Alvescot, backed by a one-year guarantee. Ask us for a quote.
- Draughty sash windows at the surround
- Tired mastic found when preparing windows for paint
- Weathered mastic on the most exposed windows
Sand mastic in Alvescot, done properly
Sand mastic suits most period window surrounds. Newer frames normally get a flexible sealant instead, and we will talk through which suits your home. If you have open joints round the window box and cement or filler used on old window joints that has cracked, we can put it right, on brick reveals, tenement windows and timber door frames alike.
Homes in small places like Alvescot often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
There’s a 12-month guarantee on every job, large or small.
- Location
- Alvescot (OX18)
- Wider area
- Oxfordshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Surface by surface
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair, so check who is responsible first.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. On listed buildings, check with your planning authority first.
Common questions in Alvescot
Is there a guarantee on sand mastic in Alvescot?
Every job comes with our 12-month guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Can you do sand mastic in Alvescot?
Yes, Alvescot is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
What’s sand mastic made of?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Should I check with the council before work on a listed or conservation-area home?
Checking first is sensible. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we’re done.
Do you take out the old sealant first?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
How it works
The work is kept neat and contained to the area we are working on. Expect the work to take a few hours per window, depending on the condition of the joints. For a village or hamlet like Alvescot, 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.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
Getting a quote
For sand mastic in Alvescot, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Related advice
What we can’t put right
Before you book, it’s worth knowing the limits:
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
- Planning or listed building consent (your local planning authority decides)
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before you book.
Surfaces we seal
- Period & listed homes
- Timber door frames
- Brick reveals
- Stone surrounds
- Sash and case windows
- Tenement windows
Why act early in Alvescot
If you’re redecorating, renew the mastic first. Painting over failed mastic doesn’t seal it and traditional guidance is to leave the new mastic unpainted. Older cottages and farmhouses around Alvescot can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why choose Mr Mastic in Alvescot
- Approved under the ARBOMaster scheme
- More than 20 years in sealant work
- A 12-month guarantee on all work
- Domestic, commercial and hotel work
Take a look at how sealant jobs are priced or our reviews.
What affects the quote in Alvescot
We do not publish a price list, because no two jobs are the same. The quote depends on:
- Working hours on commercial sites
- The size of the job
- Whether there’s mould to deal with
- Access and height
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
To help us quote quickly, let us know:
- The rough size of the job
- Any access issues, like height or stairs
- If someone has resealed it before
- The type of property
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will take it from there.
What sand mastic looks like in Alvescot
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Kelmscott Manor (about 3.7 miles south) are a reminder that the area around Alvescot has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you look after a building such as St Peter's Church of England School, its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as Church of St Peter, the joint between an old wall and a newer frame is usually the first place rain gets in.
Alvescot is about 2 miles south of Carterton, in Oxfordshire. Alvescot gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Across Oxfordshire, we cover 443 places, Alvescot among them. Our Oxford page covers work nearby (16 miles or so).
Here we cover the OX18 postcode area for sand mastic. We cover properties on Station Road, Pemscott Close and Thorpes Field and the roads around them. We also cover the places around Alvescot: Kencot (1 mile north-west), Shilton (3 miles north) and Bradwell (3 miles north-west). Within a short drive, we also cover Abingdon-on-Thames (14 miles east), Witney (6 miles north-east), Wantage (13 miles south-east), Grove (12 miles south-east), Faringdon (6 miles south) and Kidlington (15 miles north-east).
Near you in Alvescot
Around Alvescot, our work takes us to homes and buildings near Carterton Community College and The Plough pub, among other places. Other landmarks nearby include Bronze Age Bowl Barrow (0.8 miles east) and Swinford Museum (2.1 miles west).
Other services in Alvescot
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
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.
Landlord and commercial work in Alvescot
We work for landlords and letting agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.