Oxfordshire · England
Sand Mastic in Foscot
Professional sand mastic in and around Foscot, with every bit of old sealant taken out first.
- Crumbling sand mastic round a window
- Tired mastic found when preparing windows for paint
- Open joints round the window box
About our sand mastic in Foscot
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted and we’ll advise if you’re redecorating. Common call-outs are for a silicone bead on a sash window that spoils the look and patchy fillers round a sash window, on brick reveals, sash and case windows and stone surrounds.
Outdoor sealant needs dry, clean surfaces, so work on frames around Foscot is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Every job comes with a one-year guarantee.
- Place
- Foscot (OX7)
- Wider area
- Oxfordshire
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need sand mastic in Foscot
Timber swells and shrinks with the weather. The movement cracks the mastic over time.
Common reasons people contact us include:
- Silicone on a period window that looks wrong
- Weathered mastic on the most exposed windows
- Draughts and rain around sash boxes
- Old sand mastic that has cracked, crumbled or fallen out
For site and facilities teams at buildings such as Bledington Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before booking
- Who does the work, and how experienced they are
- What the cure time is
- How long the guarantee is
- What insurance they hold
What else we do in Foscot
How the visit works
When we arrive, we start by going over the job with you, so you know exactly what we’re doing. Surfaces next to the work are protected before any work starts. The work usually takes anything from a few hours to a full day, depending on how many windows. Somewhere like Foscot needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Move anything stored near the joints
- Keep children and pets away from the work area
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Advice
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Ask the planning authority about consent for listed or conservation-area homes
- Get any rot dealt with first
- Inspect the joints round the windows every year or so
- Plan mastic work ahead of painting
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
Foscot questions
Can you do sand mastic in Foscot?
Yes. Our work covers London and the South East, and Foscot is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Will you come out to Foscot?
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.
Do you guarantee sand mastic work?
Every job comes with our one-year guarantee.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once.
Is it possible to take out silicone and use sand mastic instead?
Yes. We remove the silicone and clean the joint, then point it with sand mastic.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us.
Will there be a smell?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Frames and glazing around Foscot
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Chastleton House (about 4.4 miles north) are a reminder that the area around Foscot has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around Church of St Leonard, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Kingham station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Foscot is about 9 miles north of Carterton, in Oxfordshire. Wherever you are in the OX7 postcode area, we cover sand mastic for homes and businesses. Our Oxfordshire coverage runs to 443 places, Foscot among them. For nearby work, see our Oxford page.
All of OX7 is within our area for sand mastic. Whether your property is on Station Road and Old Burford Road or anywhere close by, our applicators can take on the job. We also cover the places around Foscot: Idbury (2 miles south-west), Fifield (2 miles south), Milton-under-Wychwood (3 miles south), Fulbrook (6 miles south) and Little Barrington (6 miles south-west). We also work in nearby towns such as Witney (10 miles south-east), Carterton (9 miles south), Chipping Norton (5 miles north-east), Woodstock (13 miles east), Cogges (10 miles south-east) and Bloxham (14 miles north-east).
Near you in Foscot
Foscot’s nearest station is Kingham station, roughly 0.6 miles north-east of the centre. Well-known places in the area include Moore Cottage Hospital (5 miles west).
What we can’t put right
A few problems are outside what sealant work can do:
- Masonry that needs repairing
- Timber that has rotted
- Sashes that rattle, stick or won’t open
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- Timber door frames
- Brick reveals
- Stone surrounds
- Tenement windows
- Sash and case windows
- Period & listed homes
How the job changes by surface
Stone surrounds
Old stone surrounds are often uneven, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is usually favoured.
What affects the quote in Foscot
The price is agreed before any work begins. It takes into account:
- When we can work, for business premises
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- Whether the work is at height
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Helping us quote
There’s no need for technical detail. Just tell us:
- How we’d reach the joints
- Where the job is, and your postcode
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will explain what’s involved before giving you a price.
For landlords and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
For anyone letting property in or around Foscot, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.