Oxfordshire · England
Sand Mastic in Cholsey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Cholsey, backed by a one-year guarantee. Ask us for a quote.
- Gaps between timber frames and stone or brick
- Mastic worn away on windows facing the weather
- Gaps round a timber door in stone or brick
Sand mastic in Cholsey, done properly
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it so the surround looks right again. We work on stone surrounds, sash and case windows and timber door frames, and common reasons people get in touch are window mastic to renew ahead of painting and old sand mastic that has cracked, crumbled or fallen out.
Many houses in smaller places like Cholsey have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
You get a 12-month guarantee, the same in Cholsey as everywhere else we work.
- Place
- Cholsey (OX10)
- Region
- Oxfordshire
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Damaged stone surrounds
- Broken panes
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Where we work in Cholsey
- Sash and case windows
- Stone surrounds
- Tenement windows
- Timber door frames
- Period & listed homes
- Brick reveals
What affects the cost of sand mastic
Every job gets its own quote. These are the things that affect it:
- The type of sealant required
- Mould in or behind the old joints
- Any working-time requirements on site
- The old material and how stubborn it is
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and agree the price before starting.
What to tell us for a quote
To make quoting easier, let us know:
- Where the property is
- A few pictures by email, if you can
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we’ll take it from there.
Common questions in Cholsey
Can you help a landlord with a rental near Cholsey station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Will you come out to Cholsey?
Yes, Cholsey is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Can I choose the sealant colour?
We help you choose a colour that suits. The product needed can limit the range.
Do you have insurance?
Yes. Full insurance covers our work.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
What does sand mastic cost?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or send us an email with a short description of the job.
Can I do it myself?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Aftercare tips
A little care helps the new joints last. We recommend:
- Check with your local planning authority if your home is listed
- Don’t paint over the new mastic
- Inspect the joints round the windows every year or so
- Ask a joiner to look at soft timber first
Avoid painting over the new mastic, as traditional guidance advises. If you are redecorating, ask us first.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
Landlord and commercial work in Cholsey
If you manage several properties in or around Cholsey, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Other services in Cholsey
How the visit works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a single window, longer for several. Parking around Cholsey is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- 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.
Before we arrive
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
- Keep children and pets away from the work area
Getting a quote
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Frames and glazing around Cholsey
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. With historic houses such as Brightwell Manor (about 2.9 miles north) nearby, there’s older building stock in the area around Cholsey as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Managing a site like Cholsey Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Church of St Mary, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Cholsey station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Cholsey is about 5 miles south-east of Didcot, in Oxfordshire. Jobs in Cholsey get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Cholsey is one of 443 towns and villages in Oxfordshire we cover for sand mastic. Reading is on our list too, around 11 miles away.
Here we cover the OX10 postcode area for sand mastic. Whether your property is on Station Road, Church Road and Lapwing Lane or anywhere close by, our applicators can take on the job. Other places close to Cholsey include Winterbrook (1 mile north-east), North Stoke (1 mile east), Moulsford (1 mile south), South Stoke (2 miles south) and Mongewell (2 miles north-east). Further out, we also cover Oxford (13 miles north), Didcot (5 miles north-west), Abingdon-on-Thames (9 miles north-west), Thame (14 miles north-east), Wantage (12 miles west) and Henley-on-Thames (11 miles east).
Around Cholsey
Locally, jobs take us to homes and businesses close to Wallingford School, Cranford House School and Morning Star pub, among other places. There’s a railway station in Cholsey itself: Cholsey station. Well-known places in the area include Wallingford Castle (2.4 miles north-east). Not far away are Cholsey Marsh and Wittenham Clumps.
What the job involves on each surface
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.