Oxfordshire · England
Sand mastic for sash & case windows in Letcombe Bassett, Oxfordshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Letcombe Bassett and across Oxfordshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cracked mastic round a front door frame
- Modern sealant on a period surround
- Weathered mastic on the most exposed windows
How the visit works
There is not much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes anything from a few hours to a full day, depending on how many windows. Somewhere like Letcombe Bassett needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
- Keep pets and children clear of the area while we work
Getting a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Read more
Sand mastic in Letcombe Bassett, done properly
Sand mastic does not last for ever, leaving gaps round the window. We rake it out and renew it and tidies the surround. We work on sash and case windows, period & listed homes and brick reveals, and the jobs we see most are cement or filler used on old window joints that has cracked and gaps where the frame meets the masonry.
In a village or hamlet like Letcombe Bassett, 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.
Big or small, you get the same one-year guarantee in Letcombe Bassett and across Oxfordshire.
- Location
- Letcombe Bassett (OX12)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Nearby places to Letcombe Bassett
Other services in Letcombe Bassett
Landlord and commercial work in Letcombe Bassett
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Windows and doors in Letcombe Bassett
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.
If you live in an older home near Church of St Michael, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Letcombe Bassett is about 3 miles south-west of Wantage, in Oxfordshire. Letcombe Bassett gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Letcombe Bassett is one of 443 places in Oxfordshire we cover for sand mastic. You can also see our page for Oxford, roughly 16 miles from Letcombe Bassett.
Our applicators cover all of OX12 for sand mastic and the streets around it. Streets in the area include Gramp's Hill, Forsters Lane and Bassett Road, and we cover them all. Other places close to Letcombe Bassett include Letcombe Regis (1 mile north-east), Childrey (2 miles north-west), East Challow (2 miles north), West Challow (2 miles north) and Wantage (3 miles north-east). We also work in nearby towns such as Didcot (10 miles east), Abingdon-on-Thames (11 miles north-east), Carterton (15 miles north), Grove (3 miles north-east), Faringdon (8 miles north-west) and Wallingford (14 miles east).
Landmarks near Letcombe Bassett
Green spaces nearby include Chain Hill and Letcombe Valley.
When to call us in Letcombe Bassett
Rain on the window surround works into any crack and pushes it out. Windows facing the weather tend to go first.
Look out for any of the following:
- Gaps round a timber door in stone or brick
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
- Weathered mastic on the most exposed windows
In and around Letcombe Bassett, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- How long the guarantee is
- Who turns up on the day
- How the colour is chosen
- Is VAT in the price?
Questions from Letcombe Bassett
Do you cover smaller places like Letcombe Bassett?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do sand mastic in Letcombe Bassett?
Yes. We work across London and the South East, and Letcombe Bassett is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new sealant bonds properly.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll explain our choice.
Can old silicone round a sash window be swapped for sand mastic?
Yes. We remove the silicone and clean the joint, then point it with sand mastic.
What affects the quote in Letcombe Bassett
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- The product the joint needs
- Access and height
- The size of the job
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Helping us quote
You do not need to know the technical terms. It helps if you can tell us:
- How many joints, rooms or windows are involved
- If someone has resealed it before
- Whether it’s a home or a business
- The address or postcode of the job
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Sashes that need overhauling
- Timber that has rotted
- Crumbling stone or brickwork round the window
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Letcombe Bassett
- Period & listed homes
- Sash and case windows
- Stone surrounds
- Brick reveals
- Tenement windows
- Timber door frames
Different surfaces, different methods
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.