Oxfordshire · England
Sand mastic for sash & case windows in Moulsford, Oxfordshire
Problem with your window and door surrounds in Moulsford? We cut out the old, prepare the joints and apply the right sealant.
- Crumbling sand mastic round a window
- Tired mastic found when preparing windows for paint
- Mastic round period door frames that has failed
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Decisions on consent for listed homes
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly.
What we seal
- Sash and case windows
- Stone surrounds
- Tenement windows
- Period & listed homes
- Brick reveals
- Timber door frames
About our sand mastic in Moulsford
Traditional burnt sand mastic that sits naturally against stone and brick. It’s a good fit for period properties where a modern sealant bead would stand out. We work on timber door frames, period & listed homes and sash and case windows, and common reasons people get in touch are tired mastic found when preparing windows for paint and failed mastic on an exposed elevation.
Outdoor sealant needs dry, clean surfaces, so work on frames around Moulsford is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Your job is guaranteed for a year, as with all our work.
- Place
- Moulsford (OX10)
- Wider area
- Oxfordshire
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Sort the mastic before the decorators arrive
- Don’t run silicone over sand mastic
- Look over the window mastic once a year
- Do not paint over the new mastic
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
Your questions about sand mastic in Moulsford
Can you do sand mastic in Moulsford?
Yes, Moulsford is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Will you come out to Moulsford?
Yes, Moulsford is covered. We work across 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 work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Do you have insurance?
Yes. We are fully insured.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours, and we will agree it with you first.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll talk you through it.
DIY versus a professional finish
If you’re set on DIY, put the effort into 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 lifts and traps water and mould underneath. All the old material has to come out first.
How the job changes by surface
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
Signs you need sand mastic in Moulsford
Rain on the window surround works into any crack and pushes it out. Exposed elevations normally fail first.
Any of these means the joints need attention:
- Open joints round the window box
- Mastic that needs renewing before redecorating
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
For landlords with property near Cholsey station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What to look for in a quote
- How long the guarantee is
- What happens if they find a problem under the old sealant
- Is the old sealant removed completely?
- Whether you can choose the colour
What we do, step by step
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a single window, longer for several. Somewhere as small as Moulsford, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Keep children and pets away from the work area
- Move anything stored near the joints
- Mention any tricky access
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you are ready, ring 0345 464 0079 or send us an email.
Advice
For landlords and businesses
Letting agents and landlords in Moulsford can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Places near Moulsford
What else we do in Moulsford
What sand mastic looks like in Moulsford
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Basildon Park (about 3.9 miles south) are a reminder that the area around Moulsford 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.
If you look after a building such as Cranford House 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 John the Baptist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Moulsford is about 6 miles south-east of Didcot, in Oxfordshire. If you need sand mastic in Moulsford, please ring 0345 464 0079 or send us an email for a quick quote. We cover Oxfordshire from our Crawley base, Moulsford included. We cover 443 towns and villages across Oxfordshire, large and small. There’s also a page for Reading, about 10 miles away.
Here we cover the OX10 postcode area for sand mastic. Local streets include The Street, Glebe Close and Willow Court Lane, all of which we cover. If you are just outside Moulsford, we cover South Stoke (1 mile east), Cholsey (1 mile north), North Stoke (2 miles north-east), Streatley (2 miles south) and Goring (2 miles south). Larger places within reach include Oxford (14 miles north), Didcot (6 miles north-west), Abingdon-on-Thames (10 miles north-west), Thame (15 miles north-east), Wantage (12 miles west) and Henley-on-Thames (11 miles east).
What’s near Moulsford
Locally, jobs take us to homes and businesses close to South Stoke Primary School and The Perch and Pike pub. The closest station to Moulsford is Cholsey station, roughly 1.3 miles north of the centre. Well-known places in the area include Wallingford Castle (3.7 miles north). For a walk, there’s Withymead Nature Reserve and Churn Hill.