Oxfordshire · England
Swerford Sand Mastic
Sand mastic in Swerford from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic that needs renewing before redecorating
- Gaps where the frame meets the masonry
- A silicone bead on a sash window that spoils the look
Questions from Swerford
Is sand mastic in Swerford guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Will you come out to Swerford?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Are you fully insured?
Yes. We are fully insured.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
What does sand mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or drop us an email with a short description of the job.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. Then call 0345 464 0079 or email us.
Sand mastic in Swerford, done properly
Sand mastic does not last for ever, leaving gaps round the window. Renewing it closes the gap and tidies the surround. We work on period & listed homes, timber door frames and sash and case windows, and common reasons people get in touch are open joints round the window box and cracked mastic round a front door frame.
Around Swerford, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Your job is guaranteed for a year, as with all our work.
- Location
- Swerford (OX7)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. It normally takes anything from a few hours to a full day, depending on how many windows. Somewhere like Swerford 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.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
Ask for 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, and add pictures by email if you can.
Advice
When something else is needed
To be straight with you, there are a few things sealant won’t fix:
- Timber that has rotted
- Crumbling stone or brickwork round the window
- Sashes that need overhauling
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Where we work in Swerford
- Stone surrounds
- Brick reveals
- Sash and case windows
- Period & listed homes
- Tenement windows
- Timber door frames
Why it’s worth doing now in Swerford
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. In a small place like Swerford, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why Swerford customers choose us
- We leave the area clean and tidy
- Domestic, commercial and hotel work
- An ARBOMaster approved applicator
- Every job guaranteed for a year
See what affects the cost and what customers say.
How to look after the new joints
Aftercare is simple:
- Ask the planning authority about consent for listed or conservation-area homes
- Keep sills and gutters clear so water drains away
- Ask us before painting near the mastic
- Take care around the mastic when scraping paint
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens as more mastic falls out.
Frames and glazing around Swerford
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Church of St Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
Swerford is about 7 miles south-west of Banbury, in Oxfordshire. Swerford gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 443 places across Oxfordshire. Oxford is on our list too, around 18 miles away.
Here we cover the OX7 postcode area for sand mastic. Streets in the area include Chapel Hill and St Mary's Lane. Nearby, we also carry out sand mastic in Wigginton (1 mile north-east), Little Tew (2 miles south), Great Tew (2 miles south-east), Hook Norton (2 miles north-west) and South Newington (2 miles north-east). Within a short drive, we also cover Banbury (7 miles north-east), Bicester (14 miles south-east), Witney (13 miles south), Kidlington (13 miles south-east), Bure Park (13 miles east) and Chipping Norton (5 miles south-west).
What’s near Swerford
In Swerford, that means homes and buildings near The Boxing Hare pub. Well-known places in the area include Old Forge Museum (Great Tew) (1.6 miles south-east). The countryside around Swerford includes Woodford Bottom and Lamb's Pool.
Signs you need sand mastic in Swerford
Rain on the window surround works into any crack and pushes it out. Windows facing the weather tend to go first.
Most people get in touch after spotting something like this:
- Failed mastic on an exposed elevation
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
- Old sand mastic that has cracked, crumbled or fallen out
Around Swerford, as everywhere, sand mastic is only as good as the preparation behind it.
Comparing quotes
- Whether they’re fully insured
- When the joint can take water or movement
- How the surfaces are prepared before sealing
- How much experience the applicator has
What the job involves on each surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.